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| author | Marc Zyngier <maz@kernel.org> | 2023-03-30 20:47:51 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-03-30 21:01:10 +0300 |
| commit | 8a5eb2d210807e7dbe9ece7075533014cf4b9c27 (patch) | |
| tree | 00a50fc7113a9b6c3c7fd38a3028376e2a156c2d /arch/arm64/include/asm/kvm_host.h | |
| parent | 33c549460ef9119eb115484e81f54521122341db (diff) | |
| download | linux-8a5eb2d210807e7dbe9ece7075533014cf4b9c27.tar.xz | |
KVM: arm64: timers: Move the timer IRQs into arch_timer_vm_data
Having the timer IRQs duplicated into each vcpu isn't great, and
becomes absolutely awful with NV. So let's move these into
the per-VM arch_timer_vm_data structure.
This simplifies a lot of code, but requires us to introduce a
mutex so that we can reason about userspace trying to change
an interrupt number while another vcpu is running, something
that wasn't really well handled so far.
Reviewed-by: Colton Lewis <coltonlewis@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230330174800.2677007-12-maz@kernel.org
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 116233a390e9..1280154c9ef3 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -223,6 +223,8 @@ struct kvm_arch { #define KVM_ARCH_FLAG_SYSTEM_SUSPEND_ENABLED 5 /* VM counter offset */ #define KVM_ARCH_FLAG_VM_COUNTER_OFFSET 6 + /* Timer PPIs made immutable */ +#define KVM_ARCH_FLAG_TIMER_PPIS_IMMUTABLE 7 unsigned long flags; |