xen: drop support for Xen 4.1 and older.
Xen 4.2 become unsupported upstream in 09/2015 (see http://wiki.xen.org/wiki/Xen_Release_Features). However as far as the interfaces provided by the toolstack libraries go 4.2 and 4.3 are indistinguishable. Therefore drop support for Xen 4.1 and earlier which removes a whole pile of compatibility code which makes future work (to use stable library interfaces provided by upstream) more difficult. In particular all supported versions now use a pointer as a libxc handle (4.1 and earlier used an integer, resulting in various shim layers). Also Xen 4.2 was the first version of Xen to formally support upstream QEMU (as a preview) so that makes sense as a cut-off now. This change drops all the configure-y and resulting ifdefs in a mostly mechanical way. A follow up will refactor wrappers which are now unused. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Ian Campbell
Stefano Stabellini
parent
f075c89f0a
commit
edfb07ed22
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@ -2111,100 +2111,10 @@ EOF
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xen_ctrl_version=420
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xen=yes
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elif
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cat > $TMPC <<EOF &&
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#include <xenctrl.h>
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#include <xs.h>
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#include <stdint.h>
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#include <xen/hvm/hvm_info_table.h>
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#if !defined(HVM_MAX_VCPUS)
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# error HVM_MAX_VCPUS not defined
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#endif
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int main(void) {
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xs_daemon_open();
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xc_interface_open(0, 0, 0);
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xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
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xc_gnttab_open(NULL, 0);
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xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
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return 0;
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}
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EOF
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compile_prog "" "$xen_libs"
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then
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xen_ctrl_version=410
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xen=yes
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# Xen 4.0.0
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elif
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cat > $TMPC <<EOF &&
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#include <xenctrl.h>
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#include <xs.h>
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#include <stdint.h>
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#include <xen/hvm/hvm_info_table.h>
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#if !defined(HVM_MAX_VCPUS)
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# error HVM_MAX_VCPUS not defined
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#endif
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int main(void) {
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struct xen_add_to_physmap xatp = {
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.domid = 0, .space = XENMAPSPACE_gmfn, .idx = 0, .gpfn = 0,
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};
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xs_daemon_open();
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xc_interface_open();
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xc_gnttab_open();
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xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
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xc_memory_op(0, XENMEM_add_to_physmap, &xatp);
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return 0;
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}
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EOF
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compile_prog "" "$xen_libs"
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then
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xen_ctrl_version=400
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xen=yes
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# Xen 3.4.0
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elif
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cat > $TMPC <<EOF &&
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#include <xenctrl.h>
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#include <xs.h>
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int main(void) {
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struct xen_add_to_physmap xatp = {
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.domid = 0, .space = XENMAPSPACE_gmfn, .idx = 0, .gpfn = 0,
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};
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xs_daemon_open();
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xc_interface_open();
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xc_gnttab_open();
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xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
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xc_memory_op(0, XENMEM_add_to_physmap, &xatp);
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return 0;
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}
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EOF
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compile_prog "" "$xen_libs"
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then
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xen_ctrl_version=340
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xen=yes
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# Xen 3.3.0
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elif
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cat > $TMPC <<EOF &&
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#include <xenctrl.h>
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#include <xs.h>
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int main(void) {
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xs_daemon_open();
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xc_interface_open();
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xc_gnttab_open();
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xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
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return 0;
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}
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EOF
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compile_prog "" "$xen_libs"
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then
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xen_ctrl_version=330
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xen=yes
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# Xen version unsupported
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else
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if test "$xen" = "yes" ; then
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feature_not_found "xen (unsupported version)" "Install supported xen (e.g. 4.0, 3.4, 3.3)"
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feature_not_found "xen (unsupported version)" \
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"Install a supported xen (xen 4.2 or newer)"
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fi
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xen=no
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fi
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@ -2218,15 +2128,10 @@ EOF
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fi
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if test "$xen_pci_passthrough" != "no"; then
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if test "$xen" = "yes" && test "$linux" = "yes" &&
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test "$xen_ctrl_version" -ge 340; then
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if test "$xen" = "yes" && test "$linux" = "yes"; then
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xen_pci_passthrough=yes
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else
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if test "$xen_pci_passthrough" = "yes"; then
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if test "$xen_ctrl_version" -lt 340; then
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error_exit "User requested feature Xen PCI Passthrough" \
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"This feature does not work with Xen 3.3"
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fi
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error_exit "User requested feature Xen PCI Passthrough" \
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" but this feature requires /sys from Linux"
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fi
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@ -44,11 +44,7 @@ static void xen_apic_realize(DeviceState *dev, Error **errp)
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s->vapic_control = 0;
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memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s,
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"xen-apic-msi", APIC_SPACE_SIZE);
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#if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \
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&& CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420
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msi_supported = true;
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#endif
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}
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static void xen_apic_set_base(APICCommonState *s, uint64_t val)
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@ -48,8 +48,4 @@ void xen_modified_memory(ram_addr_t start, ram_addr_t length);
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void xen_register_framebuffer(struct MemoryRegion *mr);
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#if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
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# define HVM_MAX_VCPUS 32
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#endif
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#endif /* QEMU_HW_XEN_H */
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@ -16,11 +16,7 @@
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#undef XC_WANT_COMPAT_MAP_FOREIGN_API
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#include <xenctrl.h>
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
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# include <xs.h>
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#else
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# include <xenstore.h>
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#endif
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#include <xenstore.h>
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#include <xen/io/xenbus.h>
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#include "hw/hw.h"
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@ -30,129 +26,11 @@
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#include "trace.h"
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/*
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* We don't support Xen prior to 3.3.0.
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* We don't support Xen prior to 4.2.0.
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*/
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/* Xen before 4.0 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
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static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
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xen_pfn_t *arr, int *err,
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unsigned int num)
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{
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return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
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}
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#endif
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/* Xen before 4.1 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
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typedef int XenXC;
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typedef int xenevtchn_handle;
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typedef int xengnttab_handle;
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typedef int xenforeignmemory_handle;
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# define XC_INTERFACE_FMT "%i"
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# define XC_HANDLER_INITIAL_VALUE -1
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static inline xenevtchn_handle *xenevtchn_open(void *logger,
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unsigned int open_flags)
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{
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xenevtchn_handle *h = malloc(sizeof(*h));
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if (!h) {
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return NULL;
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}
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*h = xc_evtchn_open();
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if (*h == -1) {
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free(h);
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h = NULL;
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}
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return h;
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}
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static inline int xenevtchn_close(xenevtchn_handle *h)
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{
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int rc = xc_evtchn_close(*h);
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free(h);
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return rc;
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}
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#define xenevtchn_fd(h) xc_evtchn_fd(*h)
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#define xenevtchn_pending(h) xc_evtchn_pending(*h)
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#define xenevtchn_notify(h, p) xc_evtchn_notify(*h, p)
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#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(*h, d, p)
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#define xenevtchn_unmask(h, p) xc_evtchn_unmask(*h, p)
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#define xenevtchn_unbind(h, p) xc_evtchn_unmask(*h, p)
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static inline xengnttab_handle *xengnttab_open(void *logger,
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unsigned int open_flags)
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{
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xengnttab_handle *h = malloc(sizeof(*h));
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if (!h) {
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return NULL;
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}
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*h = xc_gnttab_open();
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if (*h == -1) {
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free(h);
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h = NULL;
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}
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return h;
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}
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static inline int xengnttab_close(xengnttab_handle *h)
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{
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int rc = xc_gnttab_close(*h);
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free(h);
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return rc;
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}
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#define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(*h, n)
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#define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(*h, d, r, p)
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#define xengnttab_map_grant_refs(h, c, d, r, p) \
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xc_gnttab_map_grant_refs(*h, c, d, r, p)
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#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(*h, a, n)
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static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
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unsigned int open_flags)
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{
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return xc_interface_open();
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}
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/* See below for xenforeignmemory_* APIs */
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static inline int xc_domain_populate_physmap_exact
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(XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
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unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
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{
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return xc_domain_memory_populate_physmap
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(xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
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}
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static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
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unsigned int space, unsigned long idx,
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xen_pfn_t gpfn)
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{
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struct xen_add_to_physmap xatp = {
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.domid = domid,
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.space = space,
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.idx = idx,
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.gpfn = gpfn,
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};
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return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
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}
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static inline struct xs_handle *xs_open(unsigned long flags)
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{
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return xs_daemon_open();
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}
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static inline void xs_close(struct xs_handle *xsh)
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{
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if (xsh != NULL) {
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xs_daemon_close(xsh);
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}
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}
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/* Xen 4.1 thru 4.6 */
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#elif CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
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/* Xen 4.2 thru 4.6 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
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typedef xc_interface *XenXC;
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typedef xc_interface *xenforeignmemory_handle;
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@ -205,27 +83,11 @@ static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
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}
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#endif
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/* Xen before 4.2 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
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static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
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uint64_t addr, uint32_t data)
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{
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return -ENOSYS;
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}
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/* The followings are only to compile op_discard related code on older
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* Xen releases. */
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#define BLKIF_OP_DISCARD 5
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struct blkif_request_discard {
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uint64_t nr_sectors;
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uint64_t sector_number;
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};
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#else
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static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
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uint64_t addr, uint32_t data)
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{
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return xc_hvm_inject_msi(xen_xc, dom, addr, data);
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}
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#endif
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void destroy_hvm_domain(bool reboot);
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19
xen-hvm.c
19
xen-hvm.c
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@ -316,7 +316,6 @@ static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
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return start_addr;
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}
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340
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static int xen_add_to_physmap(XenIOState *state,
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hwaddr start_addr,
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ram_addr_t size,
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@ -451,24 +450,6 @@ static int xen_remove_from_physmap(XenIOState *state,
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return 0;
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}
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#else
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static int xen_add_to_physmap(XenIOState *state,
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hwaddr start_addr,
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ram_addr_t size,
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MemoryRegion *mr,
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hwaddr offset_within_region)
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{
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return -ENOSYS;
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}
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static int xen_remove_from_physmap(XenIOState *state,
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hwaddr start_addr,
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ram_addr_t size)
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{
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return -ENOSYS;
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}
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#endif
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static void xen_set_memory(struct MemoryListener *listener,
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MemoryRegionSection *section,
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bool add)
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