iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch
History
Nicolas Saenz Julienne 66406d49ac KVM: x86: hyper-v: Don't auto-enable stimer on write from user-space 
commit d6800af51c76b6dae20e6023bbdc9b3da3ab5121 upstream.

Don't apply the stimer's counter side effects when modifying its
value from user-space, as this may trigger spurious interrupts.

For example:
 - The stimer is configured in auto-enable mode.
 - The stimer's count is set and the timer enabled.
 - The stimer expires, an interrupt is injected.
 - The VM is live migrated.
 - The stimer config and count are deserialized, auto-enable is ON, the
   stimer is re-enabled.
 - The stimer expires right away, and injects an unwarranted interrupt.

Cc: stable@vger.kernel.org
Fixes: 1f4b34f825e8 ("kvm/x86: Hyper-V SynIC timers")
Signed-off-by: Nicolas Saenz Julienne <nsaenz@amazon.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20231017155101.40677-1-nsaenz@amazon.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 16:54:56 +00:00
..
alpha
alpha: remove __init annotation from exported page_is_ram()
2023-08-16 18:21:03 +02:00
arc
ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard
2023-07-27 08:44:00 +02:00
arm
ARM: 9320/1: fix stack depot IRQ stack filter
2023-11-28 16:54:51 +00:00
arm64
arm64: dts: qcom: sdm845-mtp: fix WiFi configuration
2023-11-20 11:06:49 +01:00
c6x
c6x: add support for TIF_NOTIFY_SIGNAL
2023-01-04 11:39:21 +01:00
csky
csky: Fix function name in csky_alignment() and die()
2023-02-01 08:23:20 +01:00
h8300
h8300: Fix build errors from do_exit() to make_task_dead() transition
2023-02-01 08:23:19 +01:00
hexagon
hexagon: Fix function name in die()
2023-02-01 08:23:19 +01:00
ia64
ia64/cpu: Switch to arch_cpu_finalize_init()
2023-08-08 19:57:36 +02:00
m68k
m68k: Fix invalid .section syntax
2023-09-19 12:20:04 +02:00
microblaze
exit: Add and use make_task_dead.
2023-02-01 08:23:19 +01:00
mips
MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled
2023-10-10 21:53:30 +02:00
nds32
exit: Add and use make_task_dead.
2023-02-01 08:23:19 +01:00
nios2
nios2: dts: Fix tse_mac "max-frame-size" property
2023-06-21 15:45:37 +02:00
openrisc
openrisc: Properly store r31 to pt_regs on unhandled exceptions
2023-05-17 11:48:03 +02:00
parisc
parisc: Restore __ldcw_align for PA-RISC 2.0 processors
2023-10-10 21:53:40 +02:00
powerpc
powerpc/perf: Fix disabling BHRB and instruction sampling
2023-11-28 16:54:55 +00:00
riscv
riscv, bpf: Sign-extend return values
2023-10-25 11:54:13 +02:00
s390
s390/pci: fix iommu bitmap allocation
2023-10-25 11:54:25 +02:00
sh
sh: bios: Revive earlyprintk support
2023-11-20 11:06:51 +01:00
sparc
sparc32: fix a braino in fault handling in csum_and_copy_..._user()
2023-11-08 17:30:45 +01:00
um
um: Fix hostaudio build errors
2023-09-19 12:20:20 +02:00
x86
KVM: x86: hyper-v: Don't auto-enable stimer on write from user-space
2023-11-28 16:54:56 +00:00
xtensa
xtensa: boot/lib: fix function prototypes
2023-10-10 21:53:31 +02:00
.gitignore
…
Kconfig
init: Provide arch_cpu_finalize_init()
2023-08-08 19:57:36 +02:00