When QEMU receives a xenstore watch event suggesting that the "state"
of the frontend changed, it records this in its own state but it also
re-write the value back into xenstore even so there were no change.
This triggers an unnecessary xenstore watch event which QEMU will
process again (and maybe the frontend as well). Also QEMU could
potentially write an already old value.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <20190823101534.465-3-anthony.perard@citrix.com>
When a frontend wants to reset its state and the backend one, it
starts with setting "Closing", then waits for the backend (QEMU) to do
the same.
But when QEMU is setting "Closing" to its state, it triggers an event
(xenstore watch) that re-execute xen_device_backend_changed() and set
the backend state to "Closed". QEMU should wait for the frontend to
set "Closed" before doing the same.
Before setting "Closed" to the backend_state, we are also going to
check if there is a frontend. If that the case, when the backend state
is set to "Closing" the frontend should react and sets its state to
"Closing" then "Closed". The backend should wait for that to happen.
Fixes: b6af8926fb
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <20190823101534.465-2-anthony.perard@citrix.com>
Device model is supposed to destroy IOREQ server for itself.
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Acked-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <1564428563-1006-1-git-send-email-igor.druzhinin@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Of the 3 virtqueues, seabios only sets cmd, leaving ctrl
and event without a physical address. This can cause
vhost_verify_ring_part_mapping to return ENOMEM, causing
the following logs:
qemu-system-x86_64: Unable to map available ring for ring 0
qemu-system-x86_64: Verify ring failure on region 0
The qemu commit e6cc11d64f
has already resolved the issue for vhost scsi devices but
the fix was never applied to vhost-user scsi devices.
Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1560299717-177734-1-git-send-email-raphael.norwitz@nutanix.com
Message-Id: <1560299717-177734-1-git-send-email-raphael.norwitz@nutanix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The MacOS driver exits if the card does not have an interrupt. If we
set PCI_INTERRUPT_PIN to 1 then it enables VBlank interrupts and it
boots but the mouse pointer cannot be moved. This patch implements a
dummy VBlank interrupt triggered by a 60 Hz timer. With this the
pointer now moves but MacOS still hangs somewhere before completely
finishing boot.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <89364275f2fb5f85ee73c0e76528aa91691a499a.1565907489.git.balaton@eik.bme.hu>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
In case we don't have a device for an active queue, just skip
processing the queue (same we do for inactive queues) and log
a guest bug.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20190821085319.13711-1-kraxel@redhat.com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=KtI3
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/kraxel/tags/audio-20190821-pull-request' into staging
audio: second batch of -audiodev support, adding support for multiple backends.
# gpg: Signature made Wed 21 Aug 2019 09:40:37 BST
# gpg: using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/audio-20190821-pull-request:
audio: fix memory leak reported by ASAN
audio: use size_t where makes sense
audio: remove read and write pcm_ops
paaudio: fix playback glitches
audio: do not run each backend in audio_run
audio: remove audio_MIN, audio_MAX
paaudio: properly disconnect streams in fini_*
paaudio: do not move stream when sink/source name is specified
audio: audiodev= parameters no longer optional when -audiodev present
paaudio: prepare for multiple audiodev
audio: add audiodev properties to frontends
audio: add audiodev property to vnc and wav_capture
audio: basic support for multi backend audio
audio: reduce glob_audio_state usage
audio: Add missing fall through comments
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
First ppc and spapr pull request for qemu-4.2. Includes:
* Some TCG emulation fixes and performance improvements
* Support for the mffsl instruction in TCG
* Added missing DPDES SPR
* Some enhancements to the emulation of the XIVE interrupt
controller
* Cleanups to spapr MSI management
* Some new suspend/resume infrastructure and a draft suspend
implementation for spapr
* New spapr hypercall for TPM communication (will be needed for
secure guests under an Ultravisor)
* Fix several memory leaks
And a few other assorted fixes.
-----BEGIN PGP SIGNATURE-----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=E+7d
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-4.2-20190821' into staging
ppc patch queue for 2019-08-21
First ppc and spapr pull request for qemu-4.2. Includes:
* Some TCG emulation fixes and performance improvements
* Support for the mffsl instruction in TCG
* Added missing DPDES SPR
* Some enhancements to the emulation of the XIVE interrupt
controller
* Cleanups to spapr MSI management
* Some new suspend/resume infrastructure and a draft suspend
implementation for spapr
* New spapr hypercall for TPM communication (will be needed for
secure guests under an Ultravisor)
* Fix several memory leaks
And a few other assorted fixes.
# gpg: Signature made Wed 21 Aug 2019 08:24:44 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-4.2-20190821: (42 commits)
ppc: Fix emulated single to double denormalized conversions
ppc: Fix emulated INFINITY and NAN conversions
ppc: conform to processor User's Manual for xscvdpspn
ppc: Add support for 'mffsl' instruction
target/ppc: Add Directed Privileged Door-bell Exception State (DPDES) SPR
spapr/xive: Mask the EAS when allocating an IRQ
spapr: Implement better workaround in spapr-vty device
spapr/irq: Drop spapr_irq_msi_reset()
spapr/pci: Free MSIs during reset
spapr/pci: Consolidate de-allocation of MSIs
ppc: remove idle_timer logic
spapr: Implement ibm,suspend-me
i386: use machine class ->wakeup method
machine: Add wakeup method to MachineClass
ppc/xive: Improve 'info pic' support
ppc/xive: Provide silent escalation support
ppc/xive: Provide unconditional escalation support
ppc/xive: Provide escalation support
ppc/xive: Provide backlog support
ppc/xive: Implement TM_PULL_OS_CTX special command
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Move query-target and its return type TargetInfo from misc.json to
machine.json, where they are covered by MAINTAINERS section "Machine
core". Also move its implementation from arch_init.c to
hw/core/machine-qmp-cmds, where it is likewise covered.
All users of SysEmuTarget are now in machine.json. Move it there from
common.json.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190709152053.16670-3-armbru@redhat.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190709152053.16670-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Rebased onto merge commit 95a9457fd44; missed instances of qom/cpu.h
in comments replaced]
Various display devices are not target-specific and can
be compiled once for all the targets.
After this commit, the 'make world' target is reduced by
54 objects
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20190812113739.16587-3-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The "cpu.h" include makes devices target-specific. Since it
is not used, remove it, so the device become generic (we can
now compile it once for all targets).
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20190812113739.16587-2-philmd@redhat.com>
[lv: fix conflict with 650d103d3e
("Include hw/hw.h exactly where needed")]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
GCC9 is confused by this comment when building with CFLAG
-Wimplicit-fallthrough=2:
CC ppc64-softmmu/hw/ppc/spapr_rtc.o
hw/ppc/spapr_events.c: In function ‘rtas_event_log_to_source’:
hw/ppc/spapr_events.c:312:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
312 | if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) {
| ^
hw/ppc/spapr_events.c:317:5: note: here
317 | case RTAS_LOG_TYPE_EPOW:
| ^~~~
cc1: all warnings being treated as errors
Rewrite the comment using 'fall through' which is recognized by
GCC and static analyzers.
Reported-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20190719131425.10835-8-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Set frame buffer endianness according to requested endianness for
frame buffer apertures. We set frame buffer to big endian if any of
the two apertures are set to big endian. Using different endianness
for the two apertures is not implemented. This fixes inverted colors
with MacOS and Xorg frame buffer driver but some Linux drivers may
have endianness issues even on real hardware so this may not fix all
cases. MorphOS uses aper0 in LE, Linux uses aper0 in BE and MacOS uses
aper1 in BE but not sure about others or if MacOS also may need aper0
in which case we'll need a more complex fix but MacOS has other
problems yet so for now this might work.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: e2a7ec7af3fc30523213bcd27832ccad34323f2c.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
MacOS uses non-0 offset so it needs this and the resulting
vbe_start_addr seems correct but picture is still broken with OpenBIOS
after FCode runs but that maybe due to firmware problems now. After
boot, picture is now correct.
It also occured to me that these CRTC regs are also present in VGA so
I wonder if they should be shared in case some drivers try to poke
them via VGA regs or these are a separate set of regs for extended
mode. Added a comment noting this but drivers I've tried so far
program the card accessing ati regs so I did not attempt to change it.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: 1c6fce457ef7e6f889e38dc0423791be92310a62.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The crtc_offset is not needed, cur_offset is relative to the start of
vram not the start of displayed area. This fixes broken pointer image
with MacOS that uses non-0 crtc_offset.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: e6acb1fa3ca980dc948045443e5986e2aa79bf7c.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Also update bitbang_i2c state when output bits are changed while
enable bits are set. This fixes EDID access by the ATI FCode ROM.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: 292e70a92b7fbfd9a4120d433dbdcfda4e5f6c3c.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add names for AMCGPIO regs to make it easier to identify these in
trace output. This is where rage128p has the DDC from the DVI port
among others but because we don't implement the flat panel controller
we don't want to connect an EDID here to make sure drivers use the VGA
output instead. But since these are often probed by drivers it helps
to see what happens by logging these registers by name.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: 31ff69ca6959d090869907774faa1af7d2c02b2b.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Some drivers (e.g. Linux radeon drm and MacOS) access these to find
apertures to access card. Try to implement these but not sure these
are correct yet.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id: b2df13655feecd63c0049ec45fd87d1026f67091.1565558093.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
GCC9 is confused by this comment when building with CFLAG
-Wimplicit-fallthrough=2:
hw/ipmi/ipmi_bmc_extern.c: In function ‘addchar’:
hw/ipmi/ipmi_bmc_extern.c:178:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
178 | ch |= 0x10;
| ~~~^~~~~~~
hw/ipmi/ipmi_bmc_extern.c:181:5: note: here
181 | default:
| ^~~~~~~
cc1: all warnings being treated as errors
make: *** [rules.mak:69: hw/ipmi/ipmi_bmc_extern.o] Error 1
Rewrite the comment using 'fall through' which is recognized by
GCC and static analyzers.
Reported-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Message-Id: <20190719131425.10835-5-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reported by GCC9 when building with CFLAG -Wimplicit-fallthrough=2:
CC hw/dma/omap_dma.o
hw/dma/omap_dma.c: In function ‘omap_dma_write’:
hw/dma/omap_dma.c:1532:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
1532 | if (s->model <= omap_dma_3_1)
| ^
hw/dma/omap_dma.c:1534:5: note: here
1534 | case 0x400:
| ^~~~
cc1: all warnings being treated as errors
Correctly place the 'fall through' comment.
Reported-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190719131425.10835-3-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Missed during the QOM convertion in 9af21dbee1.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20190715102210.31365-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit adds No Op Command (23) to xHC for verifying the operation
of the Command Ring mechanisms.
No Op Command is defined in XHCI spec (4.6.2) and just reports Command
Completion Event with Completion Code == Success.
Before this commit, No Op Command is not implemented so xHC reports
Command Completion Event with Completion Code == TRB Error. This commit
fixes this behaviour to report Completion Code correctly.
Signed-off-by: Hikaru Nishida <hikarupsp@gmail.com>
Message-id: 20190720060427.50457-1-hikarupsp@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Interrupt packets (limited by wMaxPacketSize) should be buffered and merged
by algorithm described in USB spec.
(see usb_20.pdf/5.7.3 Interrupt Transfer Packet Size Constraints).
Signed-off-by: Martin Cerveny <M.Cerveny@computer.org>
Message-id: 20190724125859.14624-2-M.Cerveny@computer.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If interface_count is NO_INTERFACE_INFO, let's not access the arrays
out-of-bounds.
==994==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x625000243930 at pc 0x5642068086a8 bp 0x7f0b6f9ffa50 sp 0x7f0b6f9ffa40
READ of size 1 at 0x625000243930 thread T0
#0 0x5642068086a7 in usbredir_check_bulk_receiving /home/elmarco/src/qemu/hw/usb/redirect.c:1503
#1 0x56420681301c in usbredir_post_load /home/elmarco/src/qemu/hw/usb/redirect.c:2154
#2 0x5642068a56c2 in vmstate_load_state /home/elmarco/src/qemu/migration/vmstate.c:168
#3 0x56420688e2ac in vmstate_load /home/elmarco/src/qemu/migration/savevm.c:829
#4 0x5642068980cb in qemu_loadvm_section_start_full /home/elmarco/src/qemu/migration/savevm.c:2211
#5 0x564206899645 in qemu_loadvm_state_main /home/elmarco/src/qemu/migration/savevm.c:2395
#6 0x5642068998cf in qemu_loadvm_state /home/elmarco/src/qemu/migration/savevm.c:2467
#7 0x56420685f3e9 in process_incoming_migration_co /home/elmarco/src/qemu/migration/migration.c:449
#8 0x564207106c47 in coroutine_trampoline /home/elmarco/src/qemu/util/coroutine-ucontext.c:115
#9 0x7f0c0604e37f (/lib64/libc.so.6+0x4d37f)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190807084048.4258-1-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If an IRQ is allocated and not configured, such as a MSI requested by
a PCI driver, it can be saved in its default state and possibly later
on restored using the same state. If not initially MASKED, KVM will
try to find a matching priority/target tuple for the interrupt and
fail to restore the VM because 0/0 is not a valid target.
When allocating a IRQ number, the EAS should be set to a sane default :
VALID and MASKED.
Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190813164420.9829-1-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Linux guest kernels have code which scans the string of characters
returned from the H_GET_TERM_CHAR hypercall and removes any \0
character which comes immediately after a \r character. This is to
work around a bug which was present in some ancient versions of
PowerVM. In order to avoid the corruption of the console byte stream
that this introduced, commit 6c3bc244d3 ("spapr: Implement bug in
spapr-vty device to be compatible with PowerVM") added a workaround
which adds a \0 character after every \r character. Unfortunately,
this corrupts the console byte stream for those operating systems,
such as AIX, which don't remove the null bytes.
We can avoid triggering the Linux kernel workaround if we avoid
returning a buffer which contains a \0 after a \r. We can do that by
breaking out of the loop in vty_getchars() if we are about to insert a
\0 and the previous character in the buffer is a \r. That means we
return the characters up to the \r for the current H_GET_TERM_CHAR,
and the characters starting with the \0 for the next one.
With this workaround, we don't insert any spurious characters and we
avoid triggering the Linux kernel workaround, so the guest will
receive an uncorrupted stream whether or not they have the workaround.
Fixes: 6c3bc244d3 ("spapr: Implement bug in spapr-vty device to be compatible with PowerVM")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Message-Id: <20190731043653.shdi5sizjp4t65op@oak.ozlabs.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
PHBs already take care of clearing the MSIs from the bitmap during reset
or unplug. No need to do this globally from the machine code. Rather add
an assert to ensure that PHBs have acted as expected.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156415228966.1064338.190189424190233355.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[dwg: Fix crash in qtest case where spapr->irq_map can be NULL at the
new assert()]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When the machine is reset, the MSI bitmap is cleared but the allocated
MSIs are not freed. Some operating systems, such as AIX, can detect the
previous configuration and assert.
Empty the MSI cache, this performs the needed cleanup.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156415228410.1064338.4486161194061636096.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When freeing MSIs, we need to:
- remove them from the machine's MSI bitmap
- remove them from the IC backend
- remove them from the PHB's MSI cache
This is currently open coded in two places in rtas_ibm_change_msi(),
and we're about to need this in spapr_phb_reset() as well. Instead of
duplicating this code again, make it a destroy function for the PHB's
MSI cache. Removing an MSI device from the cache will call the destroy
function internally.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156415227855.1064338.5657793835271464648.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This has been useful to modify and test the Linux pseries suspend
code but it requires modification to the guest to call it (due to
being gated by other unimplemented features). It is not otherwise
used by Linux yet, but work is slowly progressing there.
This allows a (lightly modified) guest kernel to suspend with
`echo mem > /sys/power/state` and be resumed with system_wakeup
monitor command.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190722061752.22114-2-npiggin@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Move the i386 suspend_wakeup logic out of the fallback path, and into
the new ->wakeup method.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190722061752.22114-1-npiggin@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Provide a better output of the XIVE END structures including the
escalation information and extend the PowerNV machine 'info pic'
command with a dump of the END EAS table used for escalations.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-9-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When the 's' bit is set the escalation is said to be 'silent' or
'silent/gather'. In such configuration, the notification sequence is
skipped and only the escalation sequence is performed. This is used to
configure all the EQs of a vCPU to escalate on a single EQ which will
then target the hypervisor.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-8-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When the 'u' bit is set the escalation is said to be 'unconditional'
which means that the ESe PQ bits are not used. Introduce a
xive_router_end_es_notify() routine to share code with the ESn
notification.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-7-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
If the XIVE presenter can not find the NVT dispatched on any of the HW
threads, it can not deliver the interrupt. XIVE offers an escalation
mechanism to handle such scenarios and inform the hypervisor that an
action should be taken.
Escalation is configured by setting the 'e' bit and the EAS in word 4
& 5 to let the HW look for the escalation END on which to trigger a
new event.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-6-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
If backlog is activated ('b' bit) on the END, the pending priority of
a missed event is recorded in the IPB field of the NVT for a later
resend.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-5-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
When a vCPU is not dispatched anymore on a HW thread, the Hypervisor
(KVM on Linux) invalidates the OS interrupt context of a vCPU with
this special command. It returns the OS CAM line value and resets the
VO bit.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190718115420.19919-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This implements the H_TPM_COMM hypercall, which is used by an
Ultravisor to pass TPM commands directly to the host's TPM device, or
a TPM Resource Manager associated with the device.
This also introduces a new virtual device, spapr-tpm-proxy, which
is used to configure the host TPM path to be used to service
requests sent by H_TPM_COMM hcalls, for example:
-device spapr-tpm-proxy,id=tpmp0,host-path=/dev/tpmrm0
By default, no spapr-tpm-proxy will be created, and hcalls will return
H_FUNCTION.
The full specification for this hypercall can be found in
docs/specs/ppc-spapr-uv-hcalls.txt
Since SVM-related hcalls like H_TPM_COMM use a reserved range of
0xEF00-0xEF80, we introduce a separate hcall table here to handle
them.
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com
Message-Id: <20190717205842.17827-3-mdroth@linux.vnet.ibm.com>
[dwg: Corrected #include for upstream change]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This has been useful to modify and test the Linux pseries suspend
code but it requires modification to the guest to call it (due to
being gated by other unimplemented features). It is not otherwise
used by Linux yet, but work is slowly progressing there.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190718034214.14948-5-npiggin@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This does not do directed yielding and is not quite as strict as PAPR
specifies in terms of precise dispatch behaviour. This generally will
mean suboptimal performance, rather than guest misbehaviour. Linux
does not rely on exact dispatch behaviour.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190718034214.14948-4-npiggin@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
H_PROD is added, and H_CEDE is modified to test the prod bit
according to PAPR.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190718034214.14948-3-npiggin@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Implement cpu_exec_enter/exit on ppc which calls into new methods of
the same name in PPCVirtualHypervisorClass. These are used by spapr
to implement the splpar VPA dispatch counter initially.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190718034214.14948-2-npiggin@gmail.com>
[dwg: Removed unnecessary CONFIG_USER_ONLY checks as suggested by gkurz]
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Anthony PERARD
Igor Druzhinin
Peter Maydell
Raphael Norwitz
BALATON Zoltan
Gerd Hoffmann
Markus Armbruster
Philippe Mathieu-Daudé
Hikaru Nishida
Martin Cerveny
Marc-André Lureau
Cédric Le Goater
Paul Mackerras
Greg Kurz
Nicholas Piggin
Michael Roth