to let the guest recover as
much as possible.
CC: Xiang Zheng
CC: Xiaofei Tan
CC: James Morse
Signed-off-by: Dongjiu Geng
---
Abort DFSC of ESR_EL2, below web site[1] has clarified:
"When the RAS Extension is implemented, 0b011000, 0b011100, 0b011101, 0b00,
and 0b01, are reserved.
When user space do memory recovery, it will check whether KVM and
guest support the error recovery, only when both of them support,
user space will do the error recovery. This patch exports this
capability of KVM to user space.
Cc: Peter Maydell
Signed-off-by: Dongjiu Geng
---
v1->v2:
1. ch
If host failed to handle the SEA, KVM should inject an async abort
to guest for both SEA data and instruction abort, but it currently
only handles the data abort, so correct it.
Cc: James Morse
Cc: Xiang Zheng
Signed-off-by: Dongjiu Geng
---
virt/kvm/arm/mmu.c | 11 +--
1 file changed
Rename kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension(), because it does
not have any relationship with device.
Renaming this function can make code readable.
Cc: James Morse
Reviewed-by: Suzuki K Poulose
Signed-off-by: Dongjiu Geng
---
I remeber James also
ension
Cc: James Morse
Reviewed-by : Suzuki K Poulose
Signed-off-by: Dongjiu Geng
Acked-by: James Morse
---
For the 32 bits kvm migration, it needs to enable the vcpu events,
this patch will enable it. The user space QEMU patch is here:
https://patchwork.ozlabs.org/patch/975615/
---
arch/arm64/k
omments to update the patch commit messages
change since v1:
1. Update patch commit messages.
Dongjiu Geng (2):
arm/arm64: KVM: rename function kvm_arch_dev_ioctl_check_extension()
arm/arm64: KVM: enable 32 bits kvm vcpu events support
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/i
Rename kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension(), because it does
not have any relationship with device.
Renaming this function can make code readable.
Cc: James Morse
Reviewed-by: Suzuki K Poulose
Signed-off-by: Dongjiu Geng
---
I remeber James also
ports vcpu events by checking
the KVM_CAP_VCPU_EVENTS extension
Cc: James Morse
Reviewed-by : Suzuki K Poulose
Signed-off-by: Dongjiu Geng
---
For the 32 bits kvm migration, it needs to enable the vcpu events,
this patch will enable it. The user space QEMU patch is here:
https://patchwork.ozlabs
sages.
Dongjiu Geng (2):
arm/arm64: KVM: rename function kvm_arch_dev_ioctl_check_extension()
arm/arm64: KVM: enable 32 bits kvm vcpu events support
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/reset.c| 5 ++---
virt/kvm/arm/
ports vcpu events through
KVM_CAP_VCPU_EVENTS IOCTL.
Cc: James Morse
Signed-off-by: Dongjiu Geng
---
For the 32 bits kvm migration, it needs to enable the vcpu events,
this patch will enable it. The user space QEMU patch is here:
https://patchwork.ozlabs.org/patch/975615/
---
arch/arm64/kvm/r
Rename the kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension, because the name
is not reasonable;
Enable the 32 bit vcpu events support.
change since v1:
1. Update patch commit messages.
Dongjiu Geng (2):
arm/arm64: KVM: rename function
Rename kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension(), because it does
not have any relationship with device.
Renaming this function can make code readable.
Cc: James Morse
Signed-off-by: Dongjiu Geng
---
I remeber James also mentioned that rename this function
Rename the kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension, because the name
is not reasonable;
Enable the 32 bit vcpu events support.
Dongjiu Geng (2):
arm/arm64: KVM: rename function kvm_arch_dev_ioctl_check_extension()
arm/arm64: KVM: share the check for vcpu
Rename kvm_arch_dev_ioctl_check_extension() to
kvm_arch_vm_ioctl_check_extension(), because it does
not have any relationship with device.
Cc: James Morse
Signed-off-by: Dongjiu Geng
---
I remeber James also mentioned that rename this function.
---
arch/arm/include/asm/kvm_host.h | 2
ENTS IOCTL.
Signed-off-by: Dongjiu Geng
---
For the 32 bit guest migration, it needs to enable the vcpu events
---
arch/arm64/kvm/reset.c | 1 -
virt/kvm/arm/arm.c | 1 +
2 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index fd37c5
In the documentation description, this capability's name is
KVM_CAP_ARM_SET_SERROR_ESR, but in the header file this
capability's name is KVM_CAP_ARM_INJECT_SERROR_ESR, so change
the documentation description to make it same.
Signed-off-by: Dongjiu Geng
---
In the Documentation/v
In the documentation description, this capability's name is
KVM_CAP_ARM_SET_SERROR_ESR, but in the header file this
capability's name is KVM_CAP_ARM_INJECT_SERROR_ESR, so it
is better to use a same name.
Signed-off-by: Dongjiu Geng
---
In the Documentation/virtual/kvm/api.t
patch is here:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg539534.html
BTW: The user space patch is needed to rebase
Dongjiu Geng (2):
arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS
arm64: KVM: export the capability to set guest SError syndrome
Documentation/virtual/kvm/api.txt| 44
user space, otherwise returns false.
Signed-off-by: Dongjiu Geng
Reviewed-by: James Morse
---
change since v5:
1. Rebase this patch to v4.18-rc3
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm64/kvm/reset.c| 3 +++
include/uapi/linux/kvm.h | 1 +
3 files
, user space can get/set
the SError exception state to do migrate/snapshot/suspend.
Signed-off-by: Dongjiu Geng
Reviewed-by: James Morse
---
change since v5:
Address James's comments, thanks James's review
1. Check check against the top bits of ESR
change since v4:
Address Christoffer&
, user space can get/set
the SError exception state to do migrate/snapshot/suspend.
Signed-off-by: Dongjiu Geng
Reviewed-by: James Morse
---
change since v5:
Address James's comments, thanks James's review
1. Check check against the top bits of ESR
change since v4:
Address Christoffer&
patch is here:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg539534.html
BTW: The user space patch is needed to rebase
Dongjiu Geng (2):
arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS
arm64: KVM: export the capability to set guest SError syndrome
Documentation/virtual/kvm/api.txt| 44
user space, otherwise returns false.
Signed-off-by: Dongjiu Geng
Reviewed-by: James Morse
---
change since v5:
1. Rebase this patch to v4.18-rc3
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm64/kvm/reset.c| 3 +++
include/uapi/linux/kvm.h | 1 +
3 files
ACPI 6.x adds support for NOTIFY_SEI as a GHES notification
mechanism, so add new GHES notification handling functions.
Expose API ghes_notify_sei() to arch code, arch code will call
this API when it gets this NOTIFY_SEI.
Signed-off-by: Dongjiu Geng
Note:
Firmware will follow the SError mask
Add a helper to handle the NOTIFY_SEI notification, when kernel
gets the NOTIFY_SEI notification, call this helper and let APEI
driver to handle this notification.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/system_misc.h | 1 +
arch/arm64/kernel/traps.c| 4
arch
Initialise kvm_vcpu_events to 0 so that padding transferred to user-space
doesn't
contain kernel stack.
Dongjiu Geng (4):
arm64: KVM: export the capability to set guest SError syndrome
arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS
ACPI / APEI: Add SEI notification type supp
, user space can get/set
the SError exception state to do migrate/snapshot/suspend.
Signed-off-by: Dongjiu Geng
Change since V11:
Address James's comments, thanks James
1. Align the struct of kvm_vcpu_events to 64 bytes
2. Avoid exposing the stale ESR value in the kvm_arm_vcpu_get_events()
3. C
user space, otherwise returns false.
Signed-off-by: Dongjiu Geng
Reviewed-by: James Morse
Change from V11:
1. Change the commit message
2. Update the Documentation/virtual/kvm/api.tx
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm64/kvm/reset.c| 3 +++
include
Before user space injects a SError, it needs to know whether it can
specify the guest Exception Syndrome, so KVM should tell user space
whether it has such capability.
Signed-off-by: Dongjiu Geng
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm64/kvm/reset.c| 3
This new IOCTL exports user-invisible states related to SError.
Together with appropriate user space changes, it can inject
SError with specified syndrome to guest by setup kvm_vcpu_events
value. Also it can support live migration.
Signed-off-by: Dongjiu Geng
Change since V10:
Address James&#
ACPI 6.x adds support for NOTIFY_SEI as a GHES notification
mechanism, so add new GHES notification handling functions.
Expose API ghes_notify_sei() to arch code, arch code will call
this API when it gets this NOTIFY_SEI.
Signed-off-by: Dongjiu Geng
---
drivers/acpi/apei/Kconfig | 15
Add a helper to handle the NOTIFY_SEI notification, when kernel
gets the NOTIFY_SEI notification, call this helper and let APEI
driver to handle this notification.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/system_misc.h | 1 +
arch/arm64/kernel/traps.c| 4
arch
Make kvm_vcpu_events struct align to 4 bytes
4. Add something check in the kvm_arm_vcpu_set_events()
5. Check kvm_arm_vcpu_get/set_events()'s return value.
6. Initialise kvm_vcpu_events to 0 so that padding transferred to user-space
doesn't
contain kernel stack.
Dongjiu Geng (4):
arm64:
: Dongjiu Geng
---
Documentation/virtual/kvm/api.txt | 26 --
arch/arm/include/asm/kvm_host.h | 6 ++
arch/arm/kvm/guest.c | 12
arch/arm64/include/asm/kvm_host.h | 5 +
arch/arm64/include/uapi/asm/kvm.h | 10 ++
arch/arm64/kvm
Before user space injects a SError, it needs to know whether it can
specify the guest Exception Syndrome, so KVM should tell user space
whether it has such capability.
Signed-off-by: Dongjiu Geng
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm64/kvm/reset.c| 3
Export one API to specify virtual SEI syndrome value
for guest, and add a helper to get the VSESR_EL2 value.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_emulate.h | 5 +
arch/arm64/include/asm/kvm_host.h| 2 ++
arch/arm64/kvm/inject_fault.c| 5 +
3 files
Add a helper to handle the NOTIFY_SEI notification, when kernel
gets the NOTIFY_SEI notification, call this helper and let APEI
driver to handle this notification.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/system_misc.h | 1 +
arch/arm64/kernel/traps.c| 4
arch
ACPI 6.x adds support for NOTIFY_SEI as a GHES notification
mechanism, so add new GHES notification handling functions.
Expose API ghes_notify_sei() to arch code, arch code will call
this API when it gets this NOTIFY_SEI.
Signed-off-by: Dongjiu Geng
---
drivers/acpi/apei/Kconfig | 15
notification in software, KVM or kernel ARCH code call handle_guest_sei() to
let ACP driver
to handle this notification.
Dongjiu Geng (5):
arm64: KVM: Prepare set virtual SEI syndrome value
arm64: KVM: export the capability to set guest SError syndrome
arm/arm64: KVM: Introduce set and get per-vcpu
(), this function is used to
judge whether it is categorized RAS Serror.
Change some code notes, unrecoverable RAS errors is imprecise, but
Recoverable RAS errors is precise.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/traps.h | 20
arch/arm64/kernel/traps.c | 9
users. External
modules can call this exposed API to parse APEI table and
handle the SEI notification.
Signed-off-by: Dongjiu Geng
---
drivers/acpi/apei/Kconfig | 15 ++
drivers/acpi/apei/ghes.c | 53 +++
include/acpi/ghes.h | 1 +
3
has, will set it. Otherwise, nothing to do.
For this ESR specifying, Only support for AArch64, not support AArch32.
Signed-off-by: Dongjiu Geng
---
change the name to KVM_CAP_ARM_INJECT_SERROR_ESR instead of
X_ARM_RAS_EXTENSION, suggested here
https://patchwork.kernel.org/patch/9925203
raps attempts to access the physical
error registers.
ERRIDR_EL1 advertises the number of error records, we return
zero meaning we can treat all the other registers as RAZ/WI too.
Signed-off-by: Dongjiu Geng
[removed specific emulation, use trap_raz_wi() directly for everything,
rephrased parts of
From: James Morse
When we exit a guest due to an SError the vcpu fault info isn't updated
with the ESR. Today this is only done for traps.
The v8.2 RAS Extensions define ISS values for SError. Update the vcpu's
fault_info with the ESR on SError so that handle_exit() can determine
if this was a R
st/host world switch, restore this value to VSESR_EL2
only when HCR_EL2.VSE is set. This value no need to be saved
because it is stale vale when guest exit.
Signed-off-by: Dongjiu Geng
[Set an impdef ESR for Virtual-SError]
Signed-off-by: James Morse
---
arch/arm64/include/asm/kvm_emulate.h |
to isolate the error for recoverable error (UER)
4. update some patch's commit messages and clean some patches
Dongjiu Geng (5):
acpi: apei: Add SEI notification type support for ARMv8
KVM: arm64: Trap RAS error registers and set HCR_EL2's TERR & TEA
arm64: kvm: Introduce KVM_ARM
and has not (yet) been architecturally consumed
by the PE, the exception is precise. In order to make it
simple, we temporarily shut down the VM to isolate the error.
Signed-off-by: Dongjiu Geng
---
change since v8:
1. Check handle_guest_sei()'s return value
2. Temporarily shut down the
ned-off-by: James Morse
Signed-off-by: Dongjiu Geng
Reviewed-by: Catalin Marinas
---
arch/arm64/Kconfig | 16
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/include/asm/sysreg.h | 2 ++
arch/arm64/kernel/cpufeature.c | 13 +
4 files changed, 33
guest handle it, for example,
kill the guest application or panic guest OS.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_arm.h | 2 ++
virt/kvm/arm/mmu.c | 14 --
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/include/asm
valid ESR and inject virtual
SError, guest can just kill the current application if the
non-consumed error coming from guest application.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
arch/arm64/include/asm/esr.h | 15
arch/arm64/include/asm/kvm_asm.h | 3
27;no valid ISS', so set
this ESR to IMPLEMENTATION DEFINED by default if user space does not specify
it.
Dongjiu Geng (5):
acpi: apei: Add SEI notification type support for ARMv8
KVM: arm64: Trap RAS error registers and set HCR_EL2's TERR & TEA
arm64: kvm: Introduce KVM_ARM
the guest/host world switch, restore this value to VSESR_EL2
only when HCR_EL2.VSE is set. This value no need to be saved
because it is stale vale when guest exit.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
[Set an impdef ESR for Virtual-SError]
Signed-off-by: James Morse
---
ar
has, will set it. Otherwise, nothing to do.
For this ESR specifying, Only support for AArch64, not support AArch32.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
change the name to KVM_CAP_ARM_INJECT_SERROR_ESR instead of
X_ARM_RAS_EXTENSION, suggested here
https
raps attempts to access the physical
error registers.
ERRIDR_EL1 advertises the number of error records, we return
zero meaning we can treat all the other registers as RAZ/WI too.
Signed-off-by: Dongjiu Geng
[removed specific emulation, use trap_raz_wi() directly for everything,
rephrased parts of
users. External
modules can call this exposed API to parse APEI table and
handle the SEI notification.
Signed-off-by: Dongjiu Geng
---
drivers/acpi/apei/Kconfig | 15 ++
drivers/acpi/apei/ghes.c | 53 +++
include/acpi/ghes.h | 1 +
3
Signed-off-by: James Morse
Signed-off-by: Dongjiu Geng
Reviewed-by: Catalin Marinas
---
arch/arm64/Kconfig | 16
arch/arm64/include/asm/barrier.h | 1 +
arch/arm64/include/asm/cpucaps.h | 3 ++-
arch/arm64/include/asm/sysreg.h | 2 ++
arch/arm64/kernel/cp
this was a RAS SError and decode its severity.
Signed-off-by: James Morse
Signed-off-by: Dongjiu Geng
---
arch/arm64/kvm/hyp/switch.c | 15 ---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
index 945e79c..c6f1
for firmware first support". In Huawei's platform, we do not
support IESB, so software needs to insert that.
Dongjiu Geng (3):
arm64: add a macro for SError synchronization
arm64: add error synchronization barrier in kernel_entry/kernel_exit
KVM: arm64: add ESB in exception handler ent
Barrier(ESB) operations.
In this macros, if system supports RAS Extensdddon instead of IESB,
it will insert an ESB instruction.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/assembler.h | 9 +
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/include/asm/assembler.h
b
synchronization
operation.
Only add the ESB in the important exception handler path to
reduce the impact on performance.
Signed-off-by: Dongjiu Geng
---
arch/arm64/kvm/hyp/entry.S | 2 ++
arch/arm64/kvm/hyp/hyp-entry.S | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch/arm64/kvm/hyp
will immediately trap to EL3
firmware.
Signed-off-by: Dongjiu Geng
---
arch/arm64/kernel/entry.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index e147c1d..6dde644 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
same value.
Using kvm_vcpu_trap_get_fault() instead fixes it for good.
Signed-off-by: Dongjiu Geng
Acked-by: Marc Zyngier
---
arch/arm/include/asm/kvm_emulate.h | 2 +-
arch/arm64/include/asm/kvm_emulate.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/includ
For this matching, switch expression uses fault type which is
not {I,D}FSC value, but the case expression uses {I,D}FSC,
they are incompatible. So change the switch expression to
use {I,D}FSC.
Signed-off-by: Dongjiu Geng
---
arch/arm/include/asm/kvm_emulate.h | 2 +-
arch/arm64/include/asm
FSC_SEA_TTW2 FSC_SEA_TTW3
0x18FSC_SECC
0x1cFSC_SECC_TTW0 FSC_SECC_TTW1 FSC_SECC_TTW2 FSC_SECC_TTW3
CC: James Morse
CC: Tyler Baicar
Signed-off-by: Dongjiu Geng
---
As shown below code:
The kvm_vcpu_trap_get_fault_type() only return {I,D}FSC bit[5]:bit[2], not
the whole {I,D}FSC, but
:
A32 T32
Undefined Instruction +4+2
Prefetch Abort +4+4
Data Abort +8+8
IRQ or FIQ +4+4
Signed-off-by: Dongjiu Geng
Tested-by: Haibin Zhang
---
Have tested in both
_EL1 and ERRSELR_EL1 are zero.
Then, the others ERX* registers are RAZ/WI.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_arm.h | 2 ++
arch/arm64/include/asm/kvm_emulate.h | 7 +++
arch/arm64/include/asm/kvm_host.h| 2 ++
arch/arm64/include/asm/sysreg.h
the guest/host world switch, restore this value to VSESR_EL2
only when HCR_EL2.VSE is set. This value no need to be saved
because it is stale vale when guest exit.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
[Set an impdef ESR for Virtual-SError]
Signed-off-by: James Morse
---
ar
software on taking a virtual
SError interrupt exception. By default specify this syndrome value
to IMPLEMENTATION DEFINED, because all-zero means 'RAS error: Uncategorized'
instead of 'no valid ISS'.
Dongjiu Geng (4):
arm64: kvm: route synchronous external abort exceptions
address recorded by APEI table is not
accurate, so can not identify the address to hwpoison memory and
can not notify guest to do the recovery, so at the same time, let
user space specify a valid ESR and inject virtual SError.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
arch/arm64
s
for a generic API for all KVM architectures that will allow us to
do something like this.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
Documentation/virtual/kvm/api.txt | 11 +++
arch/arm/include/asm/kvm_host.h | 1 +
arch/arm/kvm/guest.c | 9 +
:
A32 T32
Undefined Instruction +4+2
Prefetch Abort +4+4
Data Abort +8+8
IRQ or FIQ +4+4
Signed-off-by: Dongjiu Geng
Tested-by: Haibin Zhang
---
Note: now only test
Instruction +4+2
Prefetch Abort +4+4
Data Abort +8+8
IRQ or FIQ +4+4
Signed-off-by: Dongjiu Geng
Signed-off-by: Haibin Zhang
---
For example, to the undefined instruction injection:
1. Guest OS call
host will use the incorrect PSTATE.UAO. So check and reset
the PSTATE.UAO when switching to host.
Move the reset PSTATE.PAN on entry to EL2 together with
PSTATE.UAO reset.
Signed-off-by: Dongjiu Geng
Signed-off-by: Haibin Zhang
Tested-by: Dongjiu Geng
---
arch/arm64/kvm/hyp/entry.S | 2 --
software on taking a virtual SError interrupt exception.
change since v5:
1. not call the memory_failure() to handle the SEI error
2. kvm classify the SError and decide how to do.
3. add code to deliver signal compatible to Non-KVM user.
4. correct some typo errors
Signed-off-by: Dongjiu Geng
SError. This syndrome value
is set to the VSESR_EL2. VSESR_EL2 is a new ARMv8.2 RAS extensions register
which provides the syndrome value reported to software on taking a virtual
SError interrupt exception.
Dongjiu Geng (5):
acpi: apei: remove the unused code
arm64: kvm: support user space to
From: James Morse
When we exit a guest due to an SError the vcpu fault info isn't updated
with the ESR. Today this is only done for traps.
The v8.2 RAS Extensions define ISS values for SError. Update the vcpu's
fault_info with the ESR on SError so that handle_exit() can determine
if this was a R
t is generated in the guest OS,
it will trap to EL3 firmware, EL3 firmware will check the
HCR_EL2.TEA value to decide to jump to hypervisor or host
OS. Enabling HCR_EL2.TERR makes error record access
from guest trap to EL2.
change since v5:
1. modify some patch description
Signed-off-by: Dongjiu
patch adds support for
querying the availability of this extension.
change since v5:
1. modify some patch description
Signed-off-by: Dongjiu Geng
---
arch/arm64/kvm/reset.c | 3 +++
include/uapi/linux/kvm.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64
:
1. remove the SEI notification type handling, because the SEI is
asynchronous exception and the address is not accurate. so
not call memory_failure() to handle it.
Signed-off-by: Dongjiu Geng
---
drivers/acpi/apei/ghes.c | 14 --
1 file changed, 14 deletions(-)
diff --git a
injection logic to
userspace, when userspace injects the SEA exception to guest
OS, it needs to specify the far_el1 value, so this patch gives
the exception virtual address to userspace.
change since v5:
1. modify some patch description
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
From: Xie XiuQi
ARM's v8.2 Extentions add support for Reliability, Availability and
Serviceability (RAS). On CPUs with these extensions system software
can use additional barriers to isolate errors and determine if faults
are pending.
Add cpufeature detection and a barrier in the context-switch
must acknowledges the error via Read Ack
register.
so user space must check the ack value to avoid read-write race condition.
Signed-off-by: Dongjiu Geng
---
hw/acpi/aml-build.c | 2 +
hw/acpi/hest_ghes.c | 345
hw/arm/virt-acpi-bui
, PSTATE, far_elx, elr_elx etc, when
switch to guest OS, it will jump to the synchronous
external abort vector table entry.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
include/sysemu/kvm.h | 2 +-
linux-headers/asm-arm64/kvm.h | 5 ++
target/arm/internals.h| 13
cknowledges the error, check the ACK value */
(qemu) xp /1 0x785D0098
785d00f0: 0x
/* After OSPM acknowledges the error, check the ACK value */
(qemu) xp /1 0x785D0098
785d00f0: 0x0001
Dongjiu Geng (6):
ACPI: add APEI/HEST/CPER structu
Add CONFIG_ACPI_APEI configuration in the Makefile and
enable it in the arm-softmmu.mak
Signed-off-by: Dongjiu Geng
---
default-configs/arm-softmmu.mak | 1 +
hw/acpi/Makefile.objs | 1 +
2 files changed, 2 insertions(+)
diff --git a/default-configs/arm-softmmu.mak b/default-configs
check if kvm supports guest RAS EXTENSION. if so, set
corresponding feature bit for vcpu.
Signed-off-by: Dongjiu Geng
---
linux-headers/linux/kvm.h | 1 +
target/arm/cpu.h | 3 +++
target/arm/kvm64.c| 8
3 files changed, 12 insertions(+)
diff --git a/linux-headers
(1) Add related APEI/HEST table structures and macros, these
definition refer to ACPI 6.1 and UEFI 2.6 spec.
(2) Add generic error status block and CPER memory section
definition, user space only handle memory section errors.
Signed-off-by: Dongjiu Geng
---
include/hw/acpi/acpi-defs.h
host VA to guest OS PA and record this error PA to HEST table.
2. set specified virtual SError syndrome and pass the value to KVM.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
linux-headers/linux/kvm.h | 1 +
target/arm/internals.h| 1 +
target/arm/kvm64.c| 28
support
Signed-off-by: Dongjiu Geng
---
arch/arm64/kvm/reset.c | 3 +++
include/uapi/linux/kvm.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index 3256b9228e75..b7313ee028e9 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm
CONFIG_ACPI_APEI_SEI do not defined.
Expose one API ghes_notify_sex() to external, external modules
can call this exposed APIs to parse and handling the SEA/SEI.
Signed-off-by: Dongjiu Geng
---
arch/arm64/mm/fault.c | 21 +++--
drivers/acpi/apei/Kconfig | 15
.
VSESR_EL2 is a new RAS extensions register which provides the
syndrome value reported to software on taking a virtual SError
interrupt exception.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
arch/arm/include/asm/kvm_host.h | 2 ++
arch/arm/kvm/guest.c | 5
From: Xie XiuQi
ARM's v8.2 Extentions add support for Reliability, Availability and
Serviceability (RAS). On CPUs with these extensions system software
can use additional barriers to isolate errors and determine if faults
are pending.
Add cpufeature detection and a barrier in the context-switch
t is generated in the guest OS,
it will trap to EL3 firmware, firmware will be according
to the HCR_EL2.TEA to decide to jump to hypervisor or host
OS. In the guest OS, RAS error record access will trap to
EL2.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_arm.h | 2 ++
arch/a
From: James Morse
When we exit a guest due to an SError the vcpu fault info isn't updated
with the ESR. Today this is only done for traps.
The v8.2 RAS Extensions define ISS values for SError. Update the vcpu's
fault_info with the ESR on SError so that handle_exit() can determine
if this was a R
injection logic to
userspace, when userspace injects the SEA exception to guest
OS, it needs to specify the far_el1 value, so this patch give
the exception virtual address to user space.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
arch/arm64/include/uapi/asm/kvm.h | 5
.
Dongjiu Geng (5):
acpi: apei: Add SEI notification type support for ARMv8
support user space to query RAS extension feature
arm64: kvm: route synchronous external abort exceptions to el2
KVM: arm/arm64: Allow get exception syndrome and
arm64: kvm: handle SEI notification and inject
For the firmware-first RAS solution, SEA and SEI is injected
by the user space, user space needs to know the vcpu's esr_el2 and
far_el2 value, so add them to sysreg. user space uses
the IOCTL KVM_GET_ONE_REG can get their value.
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_h
For the firmware-first RAS solution, SEA and SEI is injected
by the user space, user space needs to know the esr_el2 and
far_el2's value, so add them to sysreg. user space uses
the IOCTL KVM_GET_ONE_REG can get their value.
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
arch/
one cares the
old VSESR_EL2 value
(3) Add a new KVM_ARM_SEI ioctl to set the VSESR_EL2 value and pend
a virtual system error
Signed-off-by: Dongjiu Geng
Signed-off-by: Quanming Wu
---
Documentation/virtual/kvm/api.txt| 10 ++
arch/arm/include/asm/kvm_host.h | 1 +
arch
se it delegates to the guest OS kernel
Signed-off-by: Dongjiu Geng
---
arch/arm64/include/asm/kvm_arm.h | 2 ++
arch/arm64/include/asm/kvm_emulate.h | 7 +++
2 files changed, 9 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 61d694c..11
1 - 100 of 113 matches
Mail list logo
