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Xen 2017/04/21 + fix 

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Merge remote-tracking branch 'remotes/sstabellini/tags/xen-20170421-v2-tag' into staging

Xen 2017/04/21 + fix

# gpg: Signature made Tue 25 Apr 2017 19:10:37 BST
# gpg:                using RSA key 0x894F8F4870E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"
# gpg:                 aka "Stefano Stabellini <sstabellini@kernel.org>"
# Primary key fingerprint: D04E 33AB A51F 67BA 07D3  0AEA 894F 8F48 70E1 AE90

* remotes/sstabellini/tags/xen-20170421-v2-tag: (21 commits)
  move xen-mapcache.c to hw/i386/xen/
  move xen-hvm.c to hw/i386/xen/
  move xen-common.c to hw/xen/
  add xen-9p-backend to MAINTAINERS under Xen
  xen/9pfs: build and register Xen 9pfs backend
  xen/9pfs: send responses back to the frontend
  xen/9pfs: implement in/out_iov_from_pdu and vmarshal/vunmarshal
  xen/9pfs: receive requests from the frontend
  xen/9pfs: connect to the frontend
  xen/9pfs: introduce Xen 9pfs backend
  9p: introduce a type for the 9p header
  xen: import ring.h from xen
  configure: use pkg-config for obtaining xen version
  xen: additionally restrict xenforeignmemory operations
  xen: use libxendevice model to restrict operations
  xen: use 5 digit xen versions
  xen: use libxendevicemodel when available
  configure: detect presence of libxendevicemodel
  xen: create wrappers for all other uses of xc_hvm_XXX() functions
  xen: rename xen_modified_memory() to xen_hvm_modified_memory()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-04-26 10:22:31 +01:00
parent fe491fa85c 28b99f473b
commit 52e94ea5de
33 changed files with 1433 additions and 191 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
View File

@ -327,6 +327,7 @@ L: xen-devel@lists.xenproject.org
S: Supported
F: xen-*
F: */xen*
F: hw/9pfs/xen-9p-backend.c
F: hw/char/xen_console.c
F: hw/display/xenfb.c
F: hw/net/xen_nic.c

6
Makefile.target
View File

@ -149,12 +149,6 @@ obj-y += dump.o
obj-y += migration/ram.o migration/savevm.o
LIBS := $(libs_softmmu) $(LIBS)
# xen support
obj-$(CONFIG_XEN) += xen-common.o
obj-$(CONFIG_XEN_I386) += xen-hvm.o xen-mapcache.o
obj-$(call lnot,$(CONFIG_XEN)) += xen-common-stub.o
obj-$(call lnot,$(CONFIG_XEN_I386)) += xen-hvm-stub.o
# Hardware support
ifeq ($(TARGET_NAME), sparc64)
obj-y += hw/sparc64/

160
configure vendored
View File

@ -1997,30 +1997,65 @@ fi
# xen probe
if test "$xen" != "no" ; then
xen_libs="-lxenstore -lxenctrl -lxenguest"
xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
# Check whether Xen library path is specified via --extra-ldflags to avoid
# overriding this setting with pkg-config output. If not, try pkg-config
# to obtain all needed flags.
# First we test whether Xen headers and libraries are available.
# If no, we are done and there is no Xen support.
# If yes, more tests are run to detect the Xen version.
if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
$pkg_config --exists xencontrol ; then
xen_ctrl_version="$(printf '%d%02d%02d' \
$($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
xen=yes
xen_pc="xencontrol xenstore xenguest xenforeignmemory xengnttab"
xen_pc="$xen_pc xenevtchn xendevicemodel"
QEMU_CFLAGS="$QEMU_CFLAGS $($pkg_config --cflags $xen_pc)"
libs_softmmu="$($pkg_config --libs $xen_pc) $libs_softmmu"
LDFLAGS="$($pkg_config --libs $xen_pc) $LDFLAGS"
else
# Xen (any)
cat > $TMPC <<EOF
xen_libs="-lxenstore -lxenctrl -lxenguest"
xen_stable_libs="-lxencall -lxenforeignmemory -lxengnttab -lxenevtchn"
# First we test whether Xen headers and libraries are available.
# If no, we are done and there is no Xen support.
# If yes, more tests are run to detect the Xen version.
# Xen (any)
cat > $TMPC <<EOF
#include <xenctrl.h>
int main(void) {
return 0;
}
EOF
if ! compile_prog "" "$xen_libs" ; then
# Xen not found
if test "$xen" = "yes" ; then
feature_not_found "xen" "Install xen devel"
fi
xen=no
if ! compile_prog "" "$xen_libs" ; then
# Xen not found
if test "$xen" = "yes" ; then
feature_not_found "xen" "Install xen devel"
fi
xen=no
# Xen unstable
elif
cat > $TMPC <<EOF &&
# Xen unstable
elif
cat > $TMPC <<EOF &&
#undef XC_WANT_COMPAT_DEVICEMODEL_API
#define __XEN_TOOLS__
#include <xendevicemodel.h>
int main(void) {
xendevicemodel_handle *xd;
xd = xendevicemodel_open(0, 0);
xendevicemodel_close(xd);
return 0;
}
EOF
compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
then
xen_stable_libs="-lxendevicemodel $xen_stable_libs"
xen_ctrl_version=40900
xen=yes
elif
cat > $TMPC <<EOF &&
/*
* If we have stable libs the we don't want the libxc compat
* layers, regardless of what CFLAGS we may have been given.
@ -2070,12 +2105,12 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs $xen_stable_libs"
then
xen_ctrl_version=480
xen=yes
elif
cat > $TMPC <<EOF &&
compile_prog "" "$xen_libs $xen_stable_libs"
then
xen_ctrl_version=40800
xen=yes
elif
cat > $TMPC <<EOF &&
/*
* If we have stable libs the we don't want the libxc compat
* layers, regardless of what CFLAGS we may have been given.
@ -2121,12 +2156,12 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs $xen_stable_libs"
then
xen_ctrl_version=471
xen=yes
elif
cat > $TMPC <<EOF &&
compile_prog "" "$xen_libs $xen_stable_libs"
then
xen_ctrl_version=40701
xen=yes
elif
cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <stdint.h>
int main(void) {
@ -2136,14 +2171,14 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs"
then
xen_ctrl_version=470
xen=yes
compile_prog "" "$xen_libs"
then
xen_ctrl_version=40700
xen=yes
# Xen 4.6
elif
cat > $TMPC <<EOF &&
# Xen 4.6
elif
cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
@ -2164,14 +2199,14 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs"
then
xen_ctrl_version=460
xen=yes
compile_prog "" "$xen_libs"
then
xen_ctrl_version=40600
xen=yes
# Xen 4.5
elif
cat > $TMPC <<EOF &&
# Xen 4.5
elif
cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
@ -2191,13 +2226,13 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs"
then
xen_ctrl_version=450
xen=yes
compile_prog "" "$xen_libs"
then
xen_ctrl_version=40500
xen=yes
elif
cat > $TMPC <<EOF &&
elif
cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
@ -2216,24 +2251,25 @@ int main(void) {
return 0;
}
EOF
compile_prog "" "$xen_libs"
then
xen_ctrl_version=420
xen=yes
compile_prog "" "$xen_libs"
then
xen_ctrl_version=40200
xen=yes
else
if test "$xen" = "yes" ; then
feature_not_found "xen (unsupported version)" \
"Install a supported xen (xen 4.2 or newer)"
else
if test "$xen" = "yes" ; then
feature_not_found "xen (unsupported version)" \
"Install a supported xen (xen 4.2 or newer)"
fi
xen=no
fi
xen=no
fi
if test "$xen" = yes; then
if test $xen_ctrl_version -ge 471 ; then
libs_softmmu="$xen_stable_libs $libs_softmmu"
if test "$xen" = yes; then
if test $xen_ctrl_version -ge 40701 ; then
libs_softmmu="$xen_stable_libs $libs_softmmu"
fi
libs_softmmu="$xen_libs $libs_softmmu"
fi
libs_softmmu="$xen_libs $libs_softmmu"
fi
fi

1
default-configs/i386-softmmu.mak
View File

@ -39,7 +39,6 @@ CONFIG_TPM_TIS=$(CONFIG_TPM)
CONFIG_MC146818RTC=y
CONFIG_PCI_PIIX=y
CONFIG_WDT_IB700=y
CONFIG_XEN_I386=$(CONFIG_XEN)
CONFIG_ISA_DEBUG=y
CONFIG_ISA_TESTDEV=y
CONFIG_VMPORT=y

1
default-configs/x86_64-softmmu.mak
View File

@ -39,7 +39,6 @@ CONFIG_TPM_TIS=$(CONFIG_TPM)
CONFIG_MC146818RTC=y
CONFIG_PCI_PIIX=y
CONFIG_WDT_IB700=y
CONFIG_XEN_I386=$(CONFIG_XEN)
CONFIG_ISA_DEBUG=y
CONFIG_ISA_TESTDEV=y
CONFIG_VMPORT=y

6
hw/9pfs/9p.h
View File

@ -119,6 +119,12 @@ static inline char *rpath(FsContext *ctx, const char *path)
typedef struct V9fsPDU V9fsPDU;
struct V9fsState;
typedef struct {
uint32_t size_le;
uint8_t id;
uint16_t tag_le;
} QEMU_PACKED P9MsgHeader;
struct V9fsPDU
{
uint32_t size;

1
hw/9pfs/Makefile.objs
View File

@ -5,5 +5,6 @@ common-obj-y += coth.o cofs.o codir.o cofile.o
common-obj-y += coxattr.o 9p-synth.o
common-obj-$(CONFIG_OPEN_BY_HANDLE) += 9p-handle.o
common-obj-y += 9p-proxy.o
common-obj-$(CONFIG_XEN) += xen-9p-backend.o
obj-y += virtio-9p-device.o

6
hw/9pfs/virtio-9p-device.c
View File

@ -46,11 +46,7 @@ static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
VirtQueueElement *elem;
while ((pdu = pdu_alloc(s))) {
struct {
uint32_t size_le;
uint8_t id;
uint16_t tag_le;
} QEMU_PACKED out;
P9MsgHeader out;
elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
if (!elem) {

440
hw/9pfs/xen-9p-backend.c Normal file
View File

@ -0,0 +1,440 @@
/*
* Xen 9p backend
*
* Copyright Aporeto 2017
*
* Authors:
* Stefano Stabellini <stefano@aporeto.com>
*
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/9pfs/9p.h"
#include "hw/xen/xen_backend.h"
#include "hw/9pfs/xen-9pfs.h"
#include "qemu/config-file.h"
#include "fsdev/qemu-fsdev.h"
#define VERSIONS "1"
#define MAX_RINGS 8
#define MAX_RING_ORDER 8
typedef struct Xen9pfsRing {
struct Xen9pfsDev *priv;
int ref;
xenevtchn_handle *evtchndev;
int evtchn;
int local_port;
int ring_order;
struct xen_9pfs_data_intf *intf;
unsigned char *data;
struct xen_9pfs_data ring;
struct iovec *sg;
QEMUBH *bh;
/* local copies, so that we can read/write PDU data directly from
* the ring */
RING_IDX out_cons, out_size, in_cons;
bool inprogress;
} Xen9pfsRing;
typedef struct Xen9pfsDev {
struct XenDevice xendev; /* must be first */
V9fsState state;
char *path;
char *security_model;
char *tag;
char *id;
int num_rings;
Xen9pfsRing *rings;
} Xen9pfsDev;
static void xen_9pfs_in_sg(Xen9pfsRing *ring,
struct iovec *in_sg,
int *num,
uint32_t idx,
uint32_t size)
{
RING_IDX cons, prod, masked_prod, masked_cons;
cons = ring->intf->in_cons;
prod = ring->intf->in_prod;
xen_rmb();
masked_prod = xen_9pfs_mask(prod, XEN_FLEX_RING_SIZE(ring->ring_order));
masked_cons = xen_9pfs_mask(cons, XEN_FLEX_RING_SIZE(ring->ring_order));
if (masked_prod < masked_cons) {
in_sg[0].iov_base = ring->ring.in + masked_prod;
in_sg[0].iov_len = masked_cons - masked_prod;
*num = 1;
} else {
in_sg[0].iov_base = ring->ring.in + masked_prod;
in_sg[0].iov_len = XEN_FLEX_RING_SIZE(ring->ring_order) - masked_prod;
in_sg[1].iov_base = ring->ring.in;
in_sg[1].iov_len = masked_cons;
*num = 2;
}
}
static void xen_9pfs_out_sg(Xen9pfsRing *ring,
struct iovec *out_sg,
int *num,
uint32_t idx)
{
RING_IDX cons, prod, masked_prod, masked_cons;
cons = ring->intf->out_cons;
prod = ring->intf->out_prod;
xen_rmb();
masked_prod = xen_9pfs_mask(prod, XEN_FLEX_RING_SIZE(ring->ring_order));
masked_cons = xen_9pfs_mask(cons, XEN_FLEX_RING_SIZE(ring->ring_order));
if (masked_cons < masked_prod) {
out_sg[0].iov_base = ring->ring.out + masked_cons;
out_sg[0].iov_len = ring->out_size;
*num = 1;
} else {
if (ring->out_size >
(XEN_FLEX_RING_SIZE(ring->ring_order) - masked_cons)) {
out_sg[0].iov_base = ring->ring.out + masked_cons;
out_sg[0].iov_len = XEN_FLEX_RING_SIZE(ring->ring_order) -
masked_cons;
out_sg[1].iov_base = ring->ring.out;
out_sg[1].iov_len = ring->out_size -
(XEN_FLEX_RING_SIZE(ring->ring_order) -
masked_cons);
*num = 2;
} else {
out_sg[0].iov_base = ring->ring.out + masked_cons;
out_sg[0].iov_len = ring->out_size;
*num = 1;
}
}
}
static ssize_t xen_9pfs_pdu_vmarshal(V9fsPDU *pdu,
size_t offset,
const char *fmt,
va_list ap)
{
Xen9pfsDev *xen_9pfs = container_of(pdu->s, Xen9pfsDev, state);
struct iovec in_sg[2];
int num;
xen_9pfs_in_sg(&xen_9pfs->rings[pdu->tag % xen_9pfs->num_rings],
in_sg, &num, pdu->idx, ROUND_UP(offset + 128, 512));
return v9fs_iov_vmarshal(in_sg, num, offset, 0, fmt, ap);
}
static ssize_t xen_9pfs_pdu_vunmarshal(V9fsPDU *pdu,
size_t offset,
const char *fmt,
va_list ap)
{
Xen9pfsDev *xen_9pfs = container_of(pdu->s, Xen9pfsDev, state);
struct iovec out_sg[2];
int num;
xen_9pfs_out_sg(&xen_9pfs->rings[pdu->tag % xen_9pfs->num_rings],
out_sg, &num, pdu->idx);
return v9fs_iov_vunmarshal(out_sg, num, offset, 0, fmt, ap);
}
static void xen_9pfs_init_out_iov_from_pdu(V9fsPDU *pdu,
struct iovec **piov,
unsigned int *pniov)
{
Xen9pfsDev *xen_9pfs = container_of(pdu->s, Xen9pfsDev, state);
Xen9pfsRing *ring = &xen_9pfs->rings[pdu->tag % xen_9pfs->num_rings];
int num;
g_free(ring->sg);
ring->sg = g_malloc0(sizeof(*ring->sg) * 2);
xen_9pfs_out_sg(ring, ring->sg, &num, pdu->idx);
*piov = ring->sg;
*pniov = num;
}
static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu,
struct iovec **piov,
unsigned int *pniov,
size_t size)
{
Xen9pfsDev *xen_9pfs = container_of(pdu->s, Xen9pfsDev, state);
Xen9pfsRing *ring = &xen_9pfs->rings[pdu->tag % xen_9pfs->num_rings];
int num;
g_free(ring->sg);
ring->sg = g_malloc0(sizeof(*ring->sg) * 2);
xen_9pfs_in_sg(ring, ring->sg, &num, pdu->idx, size);
*piov = ring->sg;
*pniov = num;
}
static void xen_9pfs_push_and_notify(V9fsPDU *pdu)
{
RING_IDX prod;
Xen9pfsDev *priv = container_of(pdu->s, Xen9pfsDev, state);
Xen9pfsRing *ring = &priv->rings[pdu->tag % priv->num_rings];
g_free(ring->sg);
ring->sg = NULL;
ring->intf->out_cons = ring->out_cons;
xen_wmb();
prod = ring->intf->in_prod;
xen_rmb();
ring->intf->in_prod = prod + pdu->size;
xen_wmb();
ring->inprogress = false;
xenevtchn_notify(ring->evtchndev, ring->local_port);
qemu_bh_schedule(ring->bh);
}
static const struct V9fsTransport xen_9p_transport = {
.pdu_vmarshal = xen_9pfs_pdu_vmarshal,
.pdu_vunmarshal = xen_9pfs_pdu_vunmarshal,
.init_in_iov_from_pdu = xen_9pfs_init_in_iov_from_pdu,
.init_out_iov_from_pdu = xen_9pfs_init_out_iov_from_pdu,
.push_and_notify = xen_9pfs_push_and_notify,
};
static int xen_9pfs_init(struct XenDevice *xendev)
{
return 0;
}
static int xen_9pfs_receive(Xen9pfsRing *ring)
{
P9MsgHeader h;
RING_IDX cons, prod, masked_prod, masked_cons;
V9fsPDU *pdu;
if (ring->inprogress) {
return 0;
}
cons = ring->intf->out_cons;
prod = ring->intf->out_prod;
xen_rmb();
if (xen_9pfs_queued(prod, cons, XEN_FLEX_RING_SIZE(ring->ring_order)) <
sizeof(h)) {
return 0;
}
ring->inprogress = true;
masked_prod = xen_9pfs_mask(prod, XEN_FLEX_RING_SIZE(ring->ring_order));
masked_cons = xen_9pfs_mask(cons, XEN_FLEX_RING_SIZE(ring->ring_order));
xen_9pfs_read_packet((uint8_t *) &h, ring->ring.out, sizeof(h),
masked_prod, &masked_cons,
XEN_FLEX_RING_SIZE(ring->ring_order));
/* cannot fail, because we only handle one request per ring at a time */
pdu = pdu_alloc(&ring->priv->state);
pdu->size = le32_to_cpu(h.size_le);
pdu->id = h.id;
pdu->tag = le32_to_cpu(h.tag_le);
ring->out_size = le32_to_cpu(h.size_le);
ring->out_cons = cons + le32_to_cpu(h.size_le);
qemu_co_queue_init(&pdu->complete);
pdu_submit(pdu);
return 0;
}
static void xen_9pfs_bh(void *opaque)
{
Xen9pfsRing *ring = opaque;
xen_9pfs_receive(ring);
}
static void xen_9pfs_evtchn_event(void *opaque)
{
Xen9pfsRing *ring = opaque;
evtchn_port_t port;
port = xenevtchn_pending(ring->evtchndev);
xenevtchn_unmask(ring->evtchndev, port);
qemu_bh_schedule(ring->bh);
}
static int xen_9pfs_free(struct XenDevice *xendev)
{
int i;
Xen9pfsDev *xen_9pdev = container_of(xendev, Xen9pfsDev, xendev);
g_free(xen_9pdev->id);
g_free(xen_9pdev->tag);
g_free(xen_9pdev->path);
g_free(xen_9pdev->security_model);
for (i = 0; i < xen_9pdev->num_rings; i++) {
if (xen_9pdev->rings[i].data != NULL) {
xengnttab_unmap(xen_9pdev->xendev.gnttabdev,
xen_9pdev->rings[i].data,
(1 << xen_9pdev->rings[i].ring_order));
}
if (xen_9pdev->rings[i].intf != NULL) {
xengnttab_unmap(xen_9pdev->xendev.gnttabdev,
xen_9pdev->rings[i].intf,
1);
}
if (xen_9pdev->rings[i].evtchndev > 0) {
qemu_set_fd_handler(xenevtchn_fd(xen_9pdev->rings[i].evtchndev),
NULL, NULL, NULL);
xenevtchn_unbind(xen_9pdev->rings[i].evtchndev,
xen_9pdev->rings[i].local_port);
}
if (xen_9pdev->rings[i].bh != NULL) {
qemu_bh_delete(xen_9pdev->rings[i].bh);
}
}
g_free(xen_9pdev->rings);
return 0;
}
static int xen_9pfs_connect(struct XenDevice *xendev)
{
int i;
Xen9pfsDev *xen_9pdev = container_of(xendev, Xen9pfsDev, xendev);
V9fsState *s = &xen_9pdev->state;
QemuOpts *fsdev;
if (xenstore_read_fe_int(&xen_9pdev->xendev, "num-rings",
&xen_9pdev->num_rings) == -1 ||
xen_9pdev->num_rings > MAX_RINGS || xen_9pdev->num_rings < 1) {
return -1;
}
xen_9pdev->rings = g_malloc0(xen_9pdev->num_rings * sizeof(Xen9pfsRing));
for (i = 0; i < xen_9pdev->num_rings; i++) {
char *str;
int ring_order;
xen_9pdev->rings[i].priv = xen_9pdev;
xen_9pdev->rings[i].evtchn = -1;
xen_9pdev->rings[i].local_port = -1;
str = g_strdup_printf("ring-ref%u", i);
if (xenstore_read_fe_int(&xen_9pdev->xendev, str,
&xen_9pdev->rings[i].ref) == -1) {
goto out;
}
g_free(str);
str = g_strdup_printf("event-channel-%u", i);
if (xenstore_read_fe_int(&xen_9pdev->xendev, str,
&xen_9pdev->rings[i].evtchn) == -1) {
goto out;
}
g_free(str);
xen_9pdev->rings[i].intf = xengnttab_map_grant_ref(
xen_9pdev->xendev.gnttabdev,
xen_9pdev->xendev.dom,
xen_9pdev->rings[i].ref,
PROT_READ | PROT_WRITE);
if (!xen_9pdev->rings[i].intf) {
goto out;
}
ring_order = xen_9pdev->rings[i].intf->ring_order;
if (ring_order > MAX_RING_ORDER) {
goto out;
}
xen_9pdev->rings[i].ring_order = ring_order;
xen_9pdev->rings[i].data = xengnttab_map_domain_grant_refs(
xen_9pdev->xendev.gnttabdev,
(1 << ring_order),
xen_9pdev->xendev.dom,
xen_9pdev->rings[i].intf->ref,
PROT_READ | PROT_WRITE);
if (!xen_9pdev->rings[i].data) {
goto out;
}
xen_9pdev->rings[i].ring.in = xen_9pdev->rings[i].data;
xen_9pdev->rings[i].ring.out = xen_9pdev->rings[i].data +
XEN_FLEX_RING_SIZE(ring_order);
xen_9pdev->rings[i].bh = qemu_bh_new(xen_9pfs_bh, &xen_9pdev->rings[i]);
xen_9pdev->rings[i].out_cons = 0;
xen_9pdev->rings[i].out_size = 0;
xen_9pdev->rings[i].inprogress = false;
xen_9pdev->rings[i].evtchndev = xenevtchn_open(NULL, 0);
if (xen_9pdev->rings[i].evtchndev == NULL) {
goto out;
}
fcntl(xenevtchn_fd(xen_9pdev->rings[i].evtchndev), F_SETFD, FD_CLOEXEC);
xen_9pdev->rings[i].local_port = xenevtchn_bind_interdomain
(xen_9pdev->rings[i].evtchndev,
xendev->dom,
xen_9pdev->rings[i].evtchn);
if (xen_9pdev->rings[i].local_port == -1) {
xen_pv_printf(xendev, 0,
"xenevtchn_bind_interdomain failed port=%d\n",
xen_9pdev->rings[i].evtchn);
goto out;
}
xen_pv_printf(xendev, 2, "bind evtchn port %d\n", xendev->local_port);
qemu_set_fd_handler(xenevtchn_fd(xen_9pdev->rings[i].evtchndev),
xen_9pfs_evtchn_event, NULL, &xen_9pdev->rings[i]);
}
xen_9pdev->security_model = xenstore_read_be_str(xendev, "security_model");
xen_9pdev->path = xenstore_read_be_str(xendev, "path");
xen_9pdev->id = s->fsconf.fsdev_id =
g_strdup_printf("xen9p%d", xendev->dev);
xen_9pdev->tag = s->fsconf.tag = xenstore_read_fe_str(xendev, "tag");
v9fs_register_transport(s, &xen_9p_transport);
fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
s->fsconf.tag,
1, NULL);
qemu_opt_set(fsdev, "fsdriver", "local", NULL);
qemu_opt_set(fsdev, "path", xen_9pdev->path, NULL);
qemu_opt_set(fsdev, "security_model", xen_9pdev->security_model, NULL);
qemu_opts_set_id(fsdev, s->fsconf.fsdev_id);
qemu_fsdev_add(fsdev);
v9fs_device_realize_common(s, NULL);
return 0;
out:
xen_9pfs_free(xendev);
return -1;
}
static void xen_9pfs_alloc(struct XenDevice *xendev)
{
xenstore_write_be_str(xendev, "versions", VERSIONS);
xenstore_write_be_int(xendev, "max-rings", MAX_RINGS);
xenstore_write_be_int(xendev, "max-ring-page-order", MAX_RING_ORDER);
}
static void xen_9pfs_disconnect(struct XenDevice *xendev)
{
/* Dynamic hotplug of PV filesystems at runtime is not supported. */
}
struct XenDevOps xen_9pfs_ops = {
.size = sizeof(Xen9pfsDev),
.flags = DEVOPS_FLAG_NEED_GNTDEV,
.alloc = xen_9pfs_alloc,
.init = xen_9pfs_init,
.initialise = xen_9pfs_connect,
.disconnect = xen_9pfs_disconnect,
.free = xen_9pfs_free,
};

21
hw/9pfs/xen-9pfs.h Normal file
View File

@ -0,0 +1,21 @@
/*
* Xen 9p backend
*
* Copyright Aporeto 2017
*
* Authors:
* Stefano Stabellini <stefano@aporeto.com>
*
* This work is licensed under the terms of the GNU GPL version 2 or
* later. See the COPYING file in the top-level directory.
*
*/
#include <xen/io/protocols.h>
#include "hw/xen/io/ring.h"
/*
* Do not merge into xen-9p-backend.c: clang doesn't allow unused static
* inline functions in c files.
*/
DEFINE_XEN_FLEX_RING_AND_INTF(xen_9pfs);

2
hw/block/xen_blkif.h
View File

@ -1,7 +1,7 @@
#ifndef XEN_BLKIF_H
#define XEN_BLKIF_H
#include <xen/io/ring.h>
#include "hw/xen/io/ring.h"
#include <xen/io/blkif.h>
#include <xen/io/protocols.h>

2
hw/block/xen_disk.c
View File

@ -492,7 +492,7 @@ static int ioreq_map(struct ioreq *ioreq)
return 0;
}
#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 480
#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40800
static void ioreq_free_copy_buffers(struct ioreq *ioreq)
{

2
hw/i386/xen/Makefile.objs
View File

@ -1 +1 @@
obj-y += xen_platform.o xen_apic.o xen_pvdevice.o
obj-y += xen_platform.o xen_apic.o xen_pvdevice.o xen-hvm.o xen-mapcache.o

17
hw/i386/xen/trace-events
View File

@ -4,3 +4,20 @@ xen_platform_log(char *s) "xen platform: %s"
# hw/i386/xen/xen_pvdevice.c
xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space (address %"PRIx64")"
xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (address %"PRIx64")"
# xen-hvm.c
xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: %#lx, size %#lx"
xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "%#"PRIx64" size %#lx, log_dirty %i"
handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want %#"PRIx64
xen_remap_bucket(uint64_t index) "index %#"PRIx64
xen_map_cache_return(void* ptr) "%p"

59
xen-hvm.c → hw/i386/xen/xen-hvm.c
View File

@ -22,7 +22,7 @@
#include "qemu/error-report.h"
#include "qemu/range.h"
#include "sysemu/xen-mapcache.h"
#include "trace-root.h"
#include "trace.h"
#include "exec/address-spaces.h"
#include <xen/hvm/ioreq.h>
@ -125,8 +125,8 @@ int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
void xen_piix3_set_irq(void *opaque, int irq_num, int level)
{
xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
irq_num & 3, level);
xen_set_pci_intx_level(xen_domid, 0, 0, irq_num >> 2,
irq_num & 3, level);
}
void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
@ -141,7 +141,7 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
}
v &= 0xf;
if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v);
xen_set_pci_link_route(xen_domid, address + i - 0x60, v);
}
}
}
@ -156,7 +156,7 @@ int xen_is_pirq_msi(uint32_t msi_data)
void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
{
xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
xen_inject_msi(xen_domid, addr, data);
}
static void xen_suspend_notifier(Notifier *notifier, void *data)
@ -168,7 +168,7 @@ static void xen_suspend_notifier(Notifier *notifier, void *data)
static void xen_set_irq(void *opaque, int irq, int level)
{
xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
xen_set_isa_irq_level(xen_domid, irq, level);
}
qemu_irq *xen_interrupt_controller_init(void)
@ -454,10 +454,10 @@ static void xen_set_memory(struct MemoryListener *listener,
return;
} else {
if (add) {
xen_map_memory_section(xen_xc, xen_domid, state->ioservid,
xen_map_memory_section(xen_domid, state->ioservid,
section);
} else {
xen_unmap_memory_section(xen_xc, xen_domid, state->ioservid,
xen_unmap_memory_section(xen_domid, state->ioservid,
section);
}
}
@ -481,10 +481,10 @@ static void xen_set_memory(struct MemoryListener *listener,
section->mr, section->offset_within_region);
} else {
mem_type = HVMMEM_ram_ro;
if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type,
start_addr >> TARGET_PAGE_BITS,
size >> TARGET_PAGE_BITS)) {
DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n",
if (xen_set_mem_type(xen_domid, mem_type,
start_addr >> TARGET_PAGE_BITS,
size >> TARGET_PAGE_BITS)) {
DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx"\n",
start_addr);
}
}
@ -521,7 +521,7 @@ static void xen_io_add(MemoryListener *listener,
memory_region_ref(mr);
xen_map_io_section(xen_xc, xen_domid, state->ioservid, section);
xen_map_io_section(xen_domid, state->ioservid, section);
}
static void xen_io_del(MemoryListener *listener,
@ -534,7 +534,7 @@ static void xen_io_del(MemoryListener *listener,
return;
}
xen_unmap_io_section(xen_xc, xen_domid, state->ioservid, section);
xen_unmap_io_section(xen_domid, state->ioservid, section);
memory_region_unref(mr);
}
@ -547,7 +547,7 @@ static void xen_device_realize(DeviceListener *listener,
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
PCIDevice *pci_dev = PCI_DEVICE(dev);
xen_map_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
}
}
@ -559,7 +559,7 @@ static void xen_device_unrealize(DeviceListener *listener,
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
PCIDevice *pci_dev = PCI_DEVICE(dev);
xen_unmap_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
}
}
@ -586,9 +586,8 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
return;
}
rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
start_addr >> TARGET_PAGE_BITS, npages,
bitmap);
rc = xen_track_dirty_vram(xen_domid, start_addr >> TARGET_PAGE_BITS,
npages, bitmap);
if (rc < 0) {
#ifndef ENODATA
#define ENODATA ENOENT
@ -634,7 +633,7 @@ static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section,
if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
state->log_for_dirtybit = NULL;
/* Disable dirty bit tracking */
xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
xen_track_dirty_vram(xen_domid, 0, 0, NULL);
}
}
@ -1139,7 +1138,7 @@ static void xen_hvm_change_state_handler(void *opaque, int running,
xen_main_loop_prepare(state);
}
xen_set_ioreq_server_state(xen_xc, xen_domid,
xen_set_ioreq_server_state(xen_domid,
state->ioservid,
(rstate == RUN_STATE_RUNNING));
}
@ -1227,7 +1226,15 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
goto err;
}
xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
if (xen_domid_restrict) {
rc = xen_restrict(xen_domid);
if (rc < 0) {
error_report("failed to restrict: error %d", errno);
goto err;
}
}
xen_create_ioreq_server(xen_domid, &state->ioservid);
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
@ -1238,7 +1245,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
state->wakeup.notify = xen_wakeup_notifier;
qemu_register_wakeup_notifier(&state->wakeup);
rc = xen_get_ioreq_server_info(xen_xc, xen_domid, state->ioservid,
rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
&ioreq_pfn, &bufioreq_pfn,
&bufioreq_evtchn);
if (rc < 0) {
@ -1288,7 +1295,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
/* Note: cpus is empty at this point in init */
state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
rc = xen_set_ioreq_server_state(xen_xc, xen_domid, state->ioservid, true);
rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
if (rc < 0) {
error_report("failed to enable ioreq server info: error %d handle=%p",
errno, xen_xc);
@ -1391,7 +1398,7 @@ void xen_shutdown_fatal_error(const char *fmt, ...)
qemu_system_shutdown_request();
}
void xen_modified_memory(ram_addr_t start, ram_addr_t length)
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
if (unlikely(xen_in_migration)) {
int rc;
@ -1403,7 +1410,7 @@ void xen_modified_memory(ram_addr_t start, ram_addr_t length)
start_pfn = start >> TARGET_PAGE_BITS;
nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
- start_pfn;
rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
rc = xen_modified_memory(xen_domid, start_pfn, nb_pages);
if (rc) {
fprintf(stderr,
"%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",

2
xen-mapcache.c → hw/i386/xen/xen-mapcache.c
View File

@ -19,7 +19,7 @@
#include <xen/hvm/params.h>
#include "sysemu/xen-mapcache.h"
#include "trace-root.h"
#include "trace.h"
//#define MAPCACHE_DEBUG

2
hw/i386/xen/xen_platform.c
View File

@ -195,7 +195,7 @@ static void platform_fixed_ioport_writeb(void *opaque, uint32_t addr, uint32_t v
case 0: /* Platform flags */ {
hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ?
HVMMEM_ram_ro : HVMMEM_ram_rw;
if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, 0xc0, 0x40)) {
if (xen_set_mem_type(xen_domid, mem_type, 0xc0, 0x40)) {
DPRINTF("unable to change ro/rw state of ROM memory area!\n");
} else {
s->flags = val & PFFLAG_ROM_LOCK;

2
hw/usb/xen-usb.c
View File

@ -33,7 +33,7 @@
#include "qapi/qmp/qint.h"
#include "qapi/qmp/qstring.h"
#include <xen/io/ring.h>
#include "hw/xen/io/ring.h"
#include <xen/io/usbif.h>
/*

2
hw/xen/Makefile.objs
View File

@ -1,5 +1,5 @@
# xen backend driver support
common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o
common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o xen-common.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_graphics.o xen_pt_msi.o

1
hw/xen/trace-events
View File

@ -11,3 +11,4 @@ xen_map_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %
xen_unmap_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
xen_map_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
xen_unmap_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
xen_domid_restrict(int err) "err: %u"

11
xen-common.c → hw/xen/xen-common.c
View File

@ -25,6 +25,10 @@
do { } while (0)
#endif
xc_interface *xen_xc;
xenforeignmemory_handle *xen_fmem;
xendevicemodel_handle *xen_dmod;
static int store_dev_info(int domid, Chardev *cs, const char *string)
{
struct xs_handle *xs = NULL;
@ -125,6 +129,13 @@ static int xen_init(MachineState *ms)
xc_interface_close(xen_xc);
return -1;
}
xen_dmod = xendevicemodel_open(0, 0);
if (xen_dmod == NULL) {
xen_pv_printf(NULL, 0, "can't open xen devicemodel interface\n");
xenforeignmemory_close(xen_fmem);
xc_interface_close(xen_xc);
return -1;
}
qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
global_state_set_optional();

5
hw/xen/xen_backend.c
View File

@ -43,8 +43,6 @@ BusState *xen_sysbus;
/* ------------------------------------------------------------- */
/* public */
xc_interface *xen_xc = NULL;
xenforeignmemory_handle *xen_fmem = NULL;
struct xs_handle *xenstore = NULL;
const char *xen_protocol;
@ -585,6 +583,9 @@ void xen_be_register_common(void)
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
#ifdef CONFIG_VIRTFS
xen_be_register("9pfs", &xen_9pfs_ops);
#endif
#ifdef CONFIG_USB_LIBUSB
xen_be_register("qusb", &xen_usb_ops);
#endif

4
include/exec/ram_addr.h
View File

@ -260,7 +260,7 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
rcu_read_unlock();
xen_modified_memory(start, length);
xen_hvm_modified_memory(start, length);
}
#if !defined(_WIN32)
@ -314,7 +314,7 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
rcu_read_unlock();
xen_modified_memory(start, pages << TARGET_PAGE_BITS);
xen_hvm_modified_memory(start, pages << TARGET_PAGE_BITS);
} else {
uint8_t clients = tcg_enabled() ? DIRTY_CLIENTS_ALL : DIRTY_CLIENTS_NOCODE;
/*

482
include/hw/xen/io/ring.h Normal file
View File

@ -0,0 +1,482 @@
/******************************************************************************
* ring.h
*
* Shared producer-consumer ring macros.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Tim Deegan and Andrew Warfield November 2004.
*/
#ifndef __XEN_PUBLIC_IO_RING_H__
#define __XEN_PUBLIC_IO_RING_H__
/*
* When #include'ing this header, you need to provide the following
* declaration upfront:
* - standard integers types (uint8_t, uint16_t, etc)
* They are provided by stdint.h of the standard headers.
*
* In addition, if you intend to use the FLEX macros, you also need to
* provide the following, before invoking the FLEX macros:
* - size_t
* - memcpy
* - grant_ref_t
* These declarations are provided by string.h of the standard headers,
* and grant_table.h from the Xen public headers.
*/
#if __XEN_INTERFACE_VERSION__ < 0x00030208
#define xen_mb() mb()
#define xen_rmb() rmb()
#define xen_wmb() wmb()
#endif
typedef unsigned int RING_IDX;
/* Round a 32-bit unsigned constant down to the nearest power of two. */
#define __RD2(_x) (((_x) & 0x00000002) ? 0x2 : ((_x) & 0x1))
#define __RD4(_x) (((_x) & 0x0000000c) ? __RD2((_x)>>2)<<2 : __RD2(_x))
#define __RD8(_x) (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4 : __RD4(_x))
#define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8 : __RD8(_x))
#define __RD32(_x) (((_x) & 0xffff0000) ? __RD16((_x)>>16)<<16 : __RD16(_x))
/*
* Calculate size of a shared ring, given the total available space for the
* ring and indexes (_sz), and the name tag of the request/response structure.
* A ring contains as many entries as will fit, rounded down to the nearest
* power of two (so we can mask with (size-1) to loop around).
*/
#define __CONST_RING_SIZE(_s, _sz) \
(__RD32(((_sz) - offsetof(struct _s##_sring, ring)) / \
sizeof(((struct _s##_sring *)0)->ring[0])))
/*
* The same for passing in an actual pointer instead of a name tag.
*/
#define __RING_SIZE(_s, _sz) \
(__RD32(((_sz) - (long)(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0])))
/*
* Macros to make the correct C datatypes for a new kind of ring.
*
* To make a new ring datatype, you need to have two message structures,
* let's say request_t, and response_t already defined.
*
* In a header where you want the ring datatype declared, you then do:
*
* DEFINE_RING_TYPES(mytag, request_t, response_t);
*
* These expand out to give you a set of types, as you can see below.
* The most important of these are:
*
* mytag_sring_t - The shared ring.
* mytag_front_ring_t - The 'front' half of the ring.
* mytag_back_ring_t - The 'back' half of the ring.
*
* To initialize a ring in your code you need to know the location and size
* of the shared memory area (PAGE_SIZE, for instance). To initialise
* the front half:
*
* mytag_front_ring_t front_ring;
* SHARED_RING_INIT((mytag_sring_t *)shared_page);
* FRONT_RING_INIT(&front_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
*
* Initializing the back follows similarly (note that only the front
* initializes the shared ring):
*
* mytag_back_ring_t back_ring;
* BACK_RING_INIT(&back_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
*/
#define DEFINE_RING_TYPES(__name, __req_t, __rsp_t) \
\
/* Shared ring entry */ \
union __name##_sring_entry { \
__req_t req; \
__rsp_t rsp; \
}; \
\
/* Shared ring page */ \
struct __name##_sring { \
RING_IDX req_prod, req_event; \
RING_IDX rsp_prod, rsp_event; \
union { \
struct { \
uint8_t smartpoll_active; \
} netif; \
struct { \
uint8_t msg; \
} tapif_user; \
uint8_t pvt_pad[4]; \
} pvt; \
uint8_t __pad[44]; \
union __name##_sring_entry ring[1]; /* variable-length */ \
}; \
\
/* "Front" end's private variables */ \
struct __name##_front_ring { \
RING_IDX req_prod_pvt; \
RING_IDX rsp_cons; \
unsigned int nr_ents; \
struct __name##_sring *sring; \
}; \
\
/* "Back" end's private variables */ \
struct __name##_back_ring { \
RING_IDX rsp_prod_pvt; \
RING_IDX req_cons; \
unsigned int nr_ents; \
struct __name##_sring *sring; \
}; \
\
/* Syntactic sugar */ \
typedef struct __name##_sring __name##_sring_t; \
typedef struct __name##_front_ring __name##_front_ring_t; \
typedef struct __name##_back_ring __name##_back_ring_t
/*
* Macros for manipulating rings.
*
* FRONT_RING_whatever works on the "front end" of a ring: here
* requests are pushed on to the ring and responses taken off it.
*
* BACK_RING_whatever works on the "back end" of a ring: here
* requests are taken off the ring and responses put on.
*
* N.B. these macros do NO INTERLOCKS OR FLOW CONTROL.
* This is OK in 1-for-1 request-response situations where the
* requestor (front end) never has more than RING_SIZE()-1
* outstanding requests.
*/
/* Initialising empty rings */
#define SHARED_RING_INIT(_s) do { \
(_s)->req_prod = (_s)->rsp_prod = 0; \
(_s)->req_event = (_s)->rsp_event = 1; \
(void)memset((_s)->pvt.pvt_pad, 0, sizeof((_s)->pvt.pvt_pad)); \
(void)memset((_s)->__pad, 0, sizeof((_s)->__pad)); \
} while(0)
#define FRONT_RING_INIT(_r, _s, __size) do { \
(_r)->req_prod_pvt = 0; \
(_r)->rsp_cons = 0; \
(_r)->nr_ents = __RING_SIZE(_s, __size); \
(_r)->sring = (_s); \
} while (0)
#define BACK_RING_INIT(_r, _s, __size) do { \
(_r)->rsp_prod_pvt = 0; \
(_r)->req_cons = 0; \
(_r)->nr_ents = __RING_SIZE(_s, __size); \
(_r)->sring = (_s); \
} while (0)
/* How big is this ring? */
#define RING_SIZE(_r) \
((_r)->nr_ents)
/* Number of free requests (for use on front side only). */
#define RING_FREE_REQUESTS(_r) \
(RING_SIZE(_r) - ((_r)->req_prod_pvt - (_r)->rsp_cons))
/* Test if there is an empty slot available on the front ring.
* (This is only meaningful from the front. )
*/
#define RING_FULL(_r) \
(RING_FREE_REQUESTS(_r) == 0)
/* Test if there are outstanding messages to be processed on a ring. */
#define RING_HAS_UNCONSUMED_RESPONSES(_r) \
((_r)->sring->rsp_prod - (_r)->rsp_cons)
#ifdef __GNUC__
#define RING_HAS_UNCONSUMED_REQUESTS(_r) ({ \
unsigned int req = (_r)->sring->req_prod - (_r)->req_cons; \
unsigned int rsp = RING_SIZE(_r) - \
((_r)->req_cons - (_r)->rsp_prod_pvt); \
req < rsp ? req : rsp; \
})
#else
/* Same as above, but without the nice GCC ({ ... }) syntax. */
#define RING_HAS_UNCONSUMED_REQUESTS(_r) \
((((_r)->sring->req_prod - (_r)->req_cons) < \
(RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt))) ? \
((_r)->sring->req_prod - (_r)->req_cons) : \
(RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt)))
#endif
/* Direct access to individual ring elements, by index. */
#define RING_GET_REQUEST(_r, _idx) \
(&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].req))
/*
* Get a local copy of a request.
*
* Use this in preference to RING_GET_REQUEST() so all processing is
* done on a local copy that cannot be modified by the other end.
*
* Note that https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 may cause this
* to be ineffective where _req is a struct which consists of only bitfields.
*/
#define RING_COPY_REQUEST(_r, _idx, _req) do { \
/* Use volatile to force the copy into _req. */ \
*(_req) = *(volatile typeof(_req))RING_GET_REQUEST(_r, _idx); \
} while (0)
#define RING_GET_RESPONSE(_r, _idx) \
(&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].rsp))
/* Loop termination condition: Would the specified index overflow the ring? */
#define RING_REQUEST_CONS_OVERFLOW(_r, _cons) \
(((_cons) - (_r)->rsp_prod_pvt) >= RING_SIZE(_r))
/* Ill-behaved frontend determination: Can there be this many requests? */
#define RING_REQUEST_PROD_OVERFLOW(_r, _prod) \
(((_prod) - (_r)->rsp_prod_pvt) > RING_SIZE(_r))
#define RING_PUSH_REQUESTS(_r) do { \
xen_wmb(); /* back sees requests /before/ updated producer index */ \
(_r)->sring->req_prod = (_r)->req_prod_pvt; \
} while (0)
#define RING_PUSH_RESPONSES(_r) do { \
xen_wmb(); /* front sees resps /before/ updated producer index */ \
(_r)->sring->rsp_prod = (_r)->rsp_prod_pvt; \
} while (0)
/*
* Notification hold-off (req_event and rsp_event):
*
* When queueing requests or responses on a shared ring, it may not always be
* necessary to notify the remote end. For example, if requests are in flight
* in a backend, the front may be able to queue further requests without
* notifying the back (if the back checks for new requests when it queues
* responses).
*
* When enqueuing requests or responses:
*
* Use RING_PUSH_{REQUESTS,RESPONSES}_AND_CHECK_NOTIFY(). The second argument
* is a boolean return value. True indicates that the receiver requires an
* asynchronous notification.
*
* After dequeuing requests or responses (before sleeping the connection):
*
* Use RING_FINAL_CHECK_FOR_REQUESTS() or RING_FINAL_CHECK_FOR_RESPONSES().
* The second argument is a boolean return value. True indicates that there
* are pending messages on the ring (i.e., the connection should not be put
* to sleep).
*
* These macros will set the req_event/rsp_event field to trigger a
* notification on the very next message that is enqueued. If you want to
* create batches of work (i.e., only receive a notification after several
* messages have been enqueued) then you will need to create a customised
* version of the FINAL_CHECK macro in your own code, which sets the event
* field appropriately.
*/
#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \
RING_IDX __old = (_r)->sring->req_prod; \
RING_IDX __new = (_r)->req_prod_pvt; \
xen_wmb(); /* back sees requests /before/ updated producer index */ \
(_r)->sring->req_prod = __new; \
xen_mb(); /* back sees new requests /before/ we check req_event */ \
(_notify) = ((RING_IDX)(__new - (_r)->sring->req_event) < \
(RING_IDX)(__new - __old)); \
} while (0)
#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do { \
RING_IDX __old = (_r)->sring->rsp_prod; \
RING_IDX __new = (_r)->rsp_prod_pvt; \
xen_wmb(); /* front sees resps /before/ updated producer index */ \
(_r)->sring->rsp_prod = __new; \
xen_mb(); /* front sees new resps /before/ we check rsp_event */ \
(_notify) = ((RING_IDX)(__new - (_r)->sring->rsp_event) < \
(RING_IDX)(__new - __old)); \
} while (0)
#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do { \
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
if (_work_to_do) break; \
(_r)->sring->req_event = (_r)->req_cons + 1; \
xen_mb(); \
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
} while (0)
#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do { \
(_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \
if (_work_to_do) break; \
(_r)->sring->rsp_event = (_r)->rsp_cons + 1; \
xen_mb(); \
(_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \
} while (0)
/*
* DEFINE_XEN_FLEX_RING_AND_INTF defines two monodirectional rings and
* functions to check if there is data on the ring, and to read and
* write to them.
*
* DEFINE_XEN_FLEX_RING is similar to DEFINE_XEN_FLEX_RING_AND_INTF, but
* does not define the indexes page. As different protocols can have
* extensions to the basic format, this macro allow them to define their
* own struct.
*
* XEN_FLEX_RING_SIZE
* Convenience macro to calculate the size of one of the two rings
* from the overall order.
*
* $NAME_mask
* Function to apply the size mask to an index, to reduce the index
* within the range [0-size].
*
* $NAME_read_packet
* Function to read data from the ring. The amount of data to read is
* specified by the "size" argument.
*
* $NAME_write_packet
* Function to write data to the ring. The amount of data to write is
* specified by the "size" argument.
*
* $NAME_get_ring_ptr
* Convenience function that returns a pointer to read/write to the
* ring at the right location.
*
* $NAME_data_intf
* Indexes page, shared between frontend and backend. It also
* contains the array of grant refs.
*
* $NAME_queued
* Function to calculate how many bytes are currently on the ring,
* ready to be read. It can also be used to calculate how much free
* space is currently on the ring (XEN_FLEX_RING_SIZE() -
* $NAME_queued()).
*/
#ifndef XEN_PAGE_SHIFT
/* The PAGE_SIZE for ring protocols and hypercall interfaces is always
* 4K, regardless of the architecture, and page granularity chosen by
* operating systems.
*/
#define XEN_PAGE_SHIFT 12
#endif
#define XEN_FLEX_RING_SIZE(order) \
(1UL << ((order) + XEN_PAGE_SHIFT - 1))
#define DEFINE_XEN_FLEX_RING(name) \
static inline RING_IDX name##_mask(RING_IDX idx, RING_IDX ring_size) \
{ \
return idx & (ring_size - 1); \
} \
\
static inline unsigned char *name##_get_ring_ptr(unsigned char *buf, \
RING_IDX idx, \
RING_IDX ring_size) \
{ \
return buf + name##_mask(idx, ring_size); \
} \
\
static inline void name##_read_packet(void *opaque, \
const unsigned char *buf, \
size_t size, \
RING_IDX masked_prod, \
RING_IDX *masked_cons, \
RING_IDX ring_size) \
{ \
if (*masked_cons < masked_prod || \
size <= ring_size - *masked_cons) { \
memcpy(opaque, buf + *masked_cons, size); \
} else { \
memcpy(opaque, buf + *masked_cons, ring_size - *masked_cons); \
memcpy((unsigned char *)opaque + ring_size - *masked_cons, buf, \
size - (ring_size - *masked_cons)); \
} \
*masked_cons = name##_mask(*masked_cons + size, ring_size); \
} \
\
static inline void name##_write_packet(unsigned char *buf, \
const void *opaque, \
size_t size, \
RING_IDX *masked_prod, \
RING_IDX masked_cons, \
RING_IDX ring_size) \
{ \
if (*masked_prod < masked_cons || \
size <= ring_size - *masked_prod) { \
memcpy(buf + *masked_prod, opaque, size); \
} else { \
memcpy(buf + *masked_prod, opaque, ring_size - *masked_prod); \
memcpy(buf, (unsigned char *)opaque + (ring_size - *masked_prod), \
size - (ring_size - *masked_prod)); \
} \
*masked_prod = name##_mask(*masked_prod + size, ring_size); \
} \
\
static inline RING_IDX name##_queued(RING_IDX prod, \
RING_IDX cons, \
RING_IDX ring_size) \
{ \
RING_IDX size; \
\
if (prod == cons) \
return 0; \
\
prod = name##_mask(prod, ring_size); \
cons = name##_mask(cons, ring_size); \
\
if (prod == cons) \
return ring_size; \
\
if (prod > cons) \
size = prod - cons; \
else \
size = ring_size - (cons - prod); \
return size; \
} \
\
struct name##_data { \
unsigned char *in; /* half of the allocation */ \
unsigned char *out; /* half of the allocation */ \
}
#define DEFINE_XEN_FLEX_RING_AND_INTF(name) \
struct name##_data_intf { \
RING_IDX in_cons, in_prod; \
\
uint8_t pad1[56]; \
\
RING_IDX out_cons, out_prod; \
\
uint8_t pad2[56]; \
\
RING_IDX ring_order; \
grant_ref_t ref[]; \
}; \
DEFINE_XEN_FLEX_RING(name)
#endif /* __XEN_PUBLIC_IO_RING_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/

3
include/hw/xen/xen.h
View File

@ -21,6 +21,7 @@ enum xen_mode {
extern uint32_t xen_domid;
extern enum xen_mode xen_mode;
extern bool xen_domid_restrict;
extern bool xen_allowed;
@ -43,7 +44,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory);
void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
struct MemoryRegion *mr, Error **errp);
void xen_modified_memory(ram_addr_t start, ram_addr_t length);
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length);
void xen_register_framebuffer(struct MemoryRegion *mr);

5
include/hw/xen/xen_backend.h
View File

@ -14,8 +14,6 @@
OBJECT_CHECK(XenDevice, (obj), TYPE_XENBACKEND)
/* variables */
extern xc_interface *xen_xc;
extern xenforeignmemory_handle *xen_fmem;
extern struct xs_handle *xenstore;
extern const char *xen_protocol;
extern DeviceState *xen_sysdev;
@ -49,6 +47,9 @@ extern struct XenDevOps xen_console_ops; /* xen_console.c */
extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
#ifdef CONFIG_VIRTFS
extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */
#endif
extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
#ifdef CONFIG_USB_LIBUSB
extern struct XenDevOps xen_usb_ops; /* xen-usb.c */

345
include/hw/xen/xen_common.h
View File

@ -20,12 +20,14 @@
#include "qemu/queue.h"
#include "hw/xen/trace.h"
extern xc_interface *xen_xc;
/*
* We don't support Xen prior to 4.2.0.
*/
/* Xen 4.2 through 4.6 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40701
typedef xc_interface xenforeignmemory_handle;
typedef xc_evtchn xenevtchn_handle;
@ -51,6 +53,7 @@ typedef xc_gnttab xengnttab_handle;
xc_gnttab_map_domain_grant_refs(h, c, d, r, p)
#define xenforeignmemory_open(l, f) xen_xc
#define xenforeignmemory_close(h)
static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
int prot, size_t pages,
@ -65,7 +68,7 @@ static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
#define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40701 */
#include <xenevtchn.h>
#include <xengnttab.h>
@ -73,6 +76,230 @@ static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
#endif
extern xenforeignmemory_handle *xen_fmem;
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
typedef xc_interface xendevicemodel_handle;
static inline xendevicemodel_handle *xendevicemodel_open(
struct xentoollog_logger *logger, unsigned int open_flags)
{
return xen_xc;
}
#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500
static inline int xendevicemodel_create_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, int handle_bufioreq,
ioservid_t *id)
{
return xc_hvm_create_ioreq_server(dmod, domid, handle_bufioreq,
id);
}
static inline int xendevicemodel_get_ioreq_server_info(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
xen_pfn_t *ioreq_pfn, xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_port)
{
return xc_hvm_get_ioreq_server_info(dmod, domid, id, ioreq_pfn,
bufioreq_pfn, bufioreq_port);
}
static inline int xendevicemodel_map_io_range_to_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int is_mmio,
uint64_t start, uint64_t end)
{
return xc_hvm_map_io_range_to_ioreq_server(dmod, domid, id, is_mmio,
start, end);
}
static inline int xendevicemodel_unmap_io_range_from_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int is_mmio,
uint64_t start, uint64_t end)
{
return xc_hvm_unmap_io_range_from_ioreq_server(dmod, domid, id, is_mmio,
start, end);
}
static inline int xendevicemodel_map_pcidev_to_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
uint16_t segment, uint8_t bus, uint8_t device, uint8_t function)
{
return xc_hvm_map_pcidev_to_ioreq_server(dmod, domid, id, segment,
bus, device, function);
}
static inline int xendevicemodel_unmap_pcidev_from_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
uint16_t segment, uint8_t bus, uint8_t device, uint8_t function)
{
return xc_hvm_unmap_pcidev_from_ioreq_server(dmod, domid, id, segment,
bus, device, function);
}
static inline int xendevicemodel_destroy_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id)
{
return xc_hvm_destroy_ioreq_server(dmod, domid, id);
}
static inline int xendevicemodel_set_ioreq_server_state(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int enabled)
{
return xc_hvm_set_ioreq_server_state(dmod, domid, id, enabled);
}
#endif /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500 */
static inline int xendevicemodel_set_pci_intx_level(
xendevicemodel_handle *dmod, domid_t domid, uint16_t segment,
uint8_t bus, uint8_t device, uint8_t intx, unsigned int level)
{
return xc_hvm_set_pci_intx_level(dmod, domid, segment, bus, device,
intx, level);
}
static inline int xendevicemodel_set_isa_irq_level(
xendevicemodel_handle *dmod, domid_t domid, uint8_t irq,
unsigned int level)
{
return xc_hvm_set_isa_irq_level(dmod, domid, irq, level);
}
static inline int xendevicemodel_set_pci_link_route(
xendevicemodel_handle *dmod, domid_t domid, uint8_t link, uint8_t irq)
{
return xc_hvm_set_pci_link_route(dmod, domid, link, irq);
}
static inline int xendevicemodel_inject_msi(
xendevicemodel_handle *dmod, domid_t domid, uint64_t msi_addr,
uint32_t msi_data)
{
return xc_hvm_inject_msi(dmod, domid, msi_addr, msi_data);
}
static inline int xendevicemodel_track_dirty_vram(
xendevicemodel_handle *dmod, domid_t domid, uint64_t first_pfn,
uint32_t nr, unsigned long *dirty_bitmap)
{
return xc_hvm_track_dirty_vram(dmod, domid, first_pfn, nr,
dirty_bitmap);
}
static inline int xendevicemodel_modified_memory(
xendevicemodel_handle *dmod, domid_t domid, uint64_t first_pfn,
uint32_t nr)
{
return xc_hvm_modified_memory(dmod, domid, first_pfn, nr);
}
static inline int xendevicemodel_set_mem_type(
xendevicemodel_handle *dmod, domid_t domid, hvmmem_type_t mem_type,
uint64_t first_pfn, uint32_t nr)
{
return xc_hvm_set_mem_type(dmod, domid, mem_type, first_pfn, nr);
}
static inline int xendevicemodel_restrict(
xendevicemodel_handle *dmod, domid_t domid)
{
errno = ENOTTY;
return -1;
}
static inline int xenforeignmemory_restrict(
xenforeignmemory_handle *fmem, domid_t domid)
{
errno = ENOTTY;
return -1;
}
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40900 */
#undef XC_WANT_COMPAT_DEVICEMODEL_API
#include <xendevicemodel.h>
#endif
extern xendevicemodel_handle *xen_dmod;
static inline int xen_set_mem_type(domid_t domid, hvmmem_type_t type,
uint64_t first_pfn, uint32_t nr)
{
return xendevicemodel_set_mem_type(xen_dmod, domid, type, first_pfn,
nr);
}
static inline int xen_set_pci_intx_level(domid_t domid, uint16_t segment,
uint8_t bus, uint8_t device,
uint8_t intx, unsigned int level)
{
return xendevicemodel_set_pci_intx_level(xen_dmod, domid, segment, bus,
device, intx, level);
}
static inline int xen_set_pci_link_route(domid_t domid, uint8_t link,
uint8_t irq)
{
return xendevicemodel_set_pci_link_route(xen_dmod, domid, link, irq);
}
static inline int xen_inject_msi(domid_t domid, uint64_t msi_addr,
uint32_t msi_data)
{
return xendevicemodel_inject_msi(xen_dmod, domid, msi_addr, msi_data);
}
static inline int xen_set_isa_irq_level(domid_t domid, uint8_t irq,
unsigned int level)
{
return xendevicemodel_set_isa_irq_level(xen_dmod, domid, irq, level);
}
static inline int xen_track_dirty_vram(domid_t domid, uint64_t first_pfn,
uint32_t nr, unsigned long *bitmap)
{
return xendevicemodel_track_dirty_vram(xen_dmod, domid, first_pfn, nr,
bitmap);
}
static inline int xen_modified_memory(domid_t domid, uint64_t first_pfn,
uint32_t nr)
{
return xendevicemodel_modified_memory(xen_dmod, domid, first_pfn, nr);
}
static inline int xen_restrict(domid_t domid)
{
int rc;
/* Attempt to restrict devicemodel operations */
rc = xendevicemodel_restrict(xen_dmod, domid);
trace_xen_domid_restrict(rc ? errno : 0);
if (rc < 0) {
/*
* If errno is ENOTTY then restriction is not implemented so
* there's no point in trying to restrict other types of
* operation, but it should not be treated as a failure.
*/
if (errno == ENOTTY) {
return 0;
}
return rc;
}
/* Restrict foreignmemory operations */
rc = xenforeignmemory_restrict(xen_fmem, domid);
trace_xen_domid_restrict(rc ? errno : 0);
return rc;
}
void destroy_hvm_domain(bool reboot);
/* shutdown/destroy current domain because of an error */
@ -99,7 +326,7 @@ static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
#endif
/* Xen before 4.6 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40600
#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
@ -107,8 +334,7 @@ static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
#endif
static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
domid_t dom,
static inline int xen_get_default_ioreq_server_info(domid_t dom,
xen_pfn_t *ioreq_pfn,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t
@ -117,7 +343,7 @@ static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
unsigned long param;
int rc;
rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
rc = xc_get_hvm_param(xen_xc, dom, HVM_PARAM_IOREQ_PFN, &param);
if (rc < 0) {
fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
return -1;
@ -125,7 +351,7 @@ static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
*ioreq_pfn = param;
rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
rc = xc_get_hvm_param(xen_xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
if (rc < 0) {
fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
return -1;
@ -133,7 +359,7 @@ static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
*bufioreq_pfn = param;
rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
rc = xc_get_hvm_param(xen_xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
&param);
if (rc < 0) {
fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
@ -146,7 +372,7 @@ static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
}
/* Xen before 4.5 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40500
#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
#define HVM_PARAM_BUFIOREQ_EVTCHN 26
@ -156,63 +382,64 @@ static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
typedef uint16_t ioservid_t;
static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
static inline void xen_map_memory_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
static inline void xen_unmap_memory_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
static inline void xen_map_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
static inline void xen_unmap_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
static inline void xen_map_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
}
static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
static inline void xen_unmap_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
}
static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
static inline void xen_create_ioreq_server(domid_t dom,
ioservid_t *ioservid)
{
}
static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
static inline void xen_destroy_ioreq_server(domid_t dom,
ioservid_t ioservid)
{
}
static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
static inline int xen_get_ioreq_server_info(domid_t dom,
ioservid_t ioservid,
xen_pfn_t *ioreq_pfn,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn, bufioreq_pfn,
return xen_get_default_ioreq_server_info(dom, ioreq_pfn,
bufioreq_pfn,
bufioreq_evtchn);
}
static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
static inline int xen_set_ioreq_server_state(domid_t dom,
ioservid_t ioservid,
bool enable)
{
@ -224,7 +451,7 @@ static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
static bool use_default_ioreq_server;
static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
static inline void xen_map_memory_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
@ -237,11 +464,11 @@ static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
}
trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
start_addr, end_addr);
xendevicemodel_map_io_range_to_ioreq_server(xen_dmod, dom, ioservid, 1,
start_addr, end_addr);
}
static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
static inline void xen_unmap_memory_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
@ -253,13 +480,12 @@ static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
return;
}
trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
start_addr, end_addr);
xendevicemodel_unmap_io_range_from_ioreq_server(xen_dmod, dom, ioservid,
1, start_addr, end_addr);
}
static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
static inline void xen_map_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
@ -271,13 +497,12 @@ static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
return;
}
trace_xen_map_portio_range(ioservid, start_addr, end_addr);
xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
start_addr, end_addr);
xendevicemodel_map_io_range_to_ioreq_server(xen_dmod, dom, ioservid, 0,
start_addr, end_addr);
}
static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
static inline void xen_unmap_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
@ -290,11 +515,11 @@ static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
}
trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
start_addr, end_addr);
xendevicemodel_unmap_io_range_from_ioreq_server(xen_dmod, dom, ioservid,
0, start_addr, end_addr);
}
static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
static inline void xen_map_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
@ -304,13 +529,13 @@ static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
0, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
xendevicemodel_map_pcidev_to_ioreq_server(xen_dmod, dom, ioservid, 0,
pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
}
static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
static inline void xen_unmap_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
@ -320,17 +545,18 @@ static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
0, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
xendevicemodel_unmap_pcidev_from_ioreq_server(xen_dmod, dom, ioservid, 0,
pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
}
static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
static inline void xen_create_ioreq_server(domid_t dom,
ioservid_t *ioservid)
{
int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
ioservid);
int rc = xendevicemodel_create_ioreq_server(xen_dmod, dom,
HVM_IOREQSRV_BUFIOREQ_ATOMIC,
ioservid);
if (rc == 0) {
trace_xen_ioreq_server_create(*ioservid);
@ -342,7 +568,7 @@ static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
trace_xen_default_ioreq_server();
}
static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
static inline void xen_destroy_ioreq_server(domid_t dom,
ioservid_t ioservid)
{
if (use_default_ioreq_server) {
@ -350,27 +576,27 @@ static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
}
trace_xen_ioreq_server_destroy(ioservid);
xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
xendevicemodel_destroy_ioreq_server(xen_dmod, dom, ioservid);
}
static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
static inline int xen_get_ioreq_server_info(domid_t dom,
ioservid_t ioservid,
xen_pfn_t *ioreq_pfn,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
if (use_default_ioreq_server) {
return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn,
return xen_get_default_ioreq_server_info(dom, ioreq_pfn,
bufioreq_pfn,
bufioreq_evtchn);
}
return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
ioreq_pfn, bufioreq_pfn,
bufioreq_evtchn);
return xendevicemodel_get_ioreq_server_info(xen_dmod, dom, ioservid,
ioreq_pfn, bufioreq_pfn,
bufioreq_evtchn);
}
static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
static inline int xen_set_ioreq_server_state(domid_t dom,
ioservid_t ioservid,
bool enable)
{
@ -379,12 +605,13 @@ static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
}
trace_xen_ioreq_server_state(ioservid, enable);
return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
return xendevicemodel_set_ioreq_server_state(xen_dmod, dom, ioservid,
enable);
}
#endif
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40600
static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
unsigned int space,
unsigned long idx,
@ -407,7 +634,7 @@ static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid
#endif
#ifdef CONFIG_XEN_PV_DOMAIN_BUILD
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40700
static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
xen_domain_handle_t handle, uint32_t flags,
uint32_t *pdomid)
@ -426,7 +653,7 @@ static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
/* Xen before 4.8 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 480
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40800
typedef void *xengnttab_grant_copy_segment_t;

7
qemu-options.hx
View File

@ -3378,6 +3378,11 @@ DEF("xen-attach", 0, QEMU_OPTION_xen_attach,
"-xen-attach attach to existing xen domain\n"
" xend will use this when starting QEMU\n",
QEMU_ARCH_ALL)
DEF("xen-domid-restrict", 0, QEMU_OPTION_xen_domid_restrict,
"-xen-domid-restrict restrict set of available xen operations\n"
" to specified domain id. (Does not affect\n"
" xenpv machine type).\n",
QEMU_ARCH_ALL)
STEXI
@item -xen-domid @var{id}
@findex -xen-domid
@ -3390,6 +3395,8 @@ Warning: should not be used when xend is in use (XEN only).
@findex -xen-attach
Attach to existing xen domain.
xend will use this when starting QEMU (XEN only).
@findex -xen-domid-restrict
Restrict set of available xen operations to specified domain id (XEN only).
ETEXI
DEF("no-reboot", 0, QEMU_OPTION_no_reboot, \

2
stubs/Makefile.objs
View File

@ -37,3 +37,5 @@ stub-obj-y += target-monitor-defs.o
stub-obj-y += target-get-monitor-def.o
stub-obj-y += pc_madt_cpu_entry.o
stub-obj-y += vmgenid.o
stub-obj-y += xen-common.o
stub-obj-y += xen-hvm.o

0
xen-common-stub.c → stubs/xen-common.c
View File

2
xen-hvm-stub.c → stubs/xen-hvm.c
View File

@ -50,7 +50,7 @@ void xen_register_framebuffer(MemoryRegion *mr)
{
}
void xen_modified_memory(ram_addr_t start, ram_addr_t length)
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
}

16
trace-events
View File

@ -48,22 +48,6 @@ spice_vmc_register_interface(void *scd) "spice vmc registered interface %p"
spice_vmc_unregister_interface(void *scd) "spice vmc unregistered interface %p"
spice_vmc_event(int event) "spice vmc event %d"
# xen-hvm.c
xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: %#lx, size %#lx"
xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "%#"PRIx64" size %#lx, log_dirty %i"
handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want %#"PRIx64
xen_remap_bucket(uint64_t index) "index %#"PRIx64
xen_map_cache_return(void* ptr) "%p"
# monitor.c
monitor_protocol_event_handler(uint32_t event, void *qdict) "event=%d data=%p"
monitor_protocol_event_emit(uint32_t event, void *data) "event=%d data=%p"

8
vl.c
View File

@ -205,6 +205,7 @@ static NotifierList machine_init_done_notifiers =
bool xen_allowed;
uint32_t xen_domid;
enum xen_mode xen_mode = XEN_EMULATE;
bool xen_domid_restrict;
static int has_defaults = 1;
static int default_serial = 1;
@ -3933,6 +3934,13 @@ int main(int argc, char **argv, char **envp)
}
xen_mode = XEN_ATTACH;
break;
case QEMU_OPTION_xen_domid_restrict:
if (!(xen_available())) {
error_report("Option not supported for this target");
exit(1);
}
xen_domid_restrict = true;
break;
case QEMU_OPTION_trace:
g_free(trace_file);
trace_file = trace_opt_parse(optarg);