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| author | Andrew Jones <ajones@ventanamicro.com> | 2023-12-20 19:00:18 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-12-30 08:56:22 +0300 |
| commit | 2a1f6bf079700f0f9d8045ab77b302aeb4d12c06 (patch) | |
| tree | 72fd530c895a6571383541f3347933a7d40c37ca /arch/riscv/include/asm/kvm_host.h | |
| parent | 5fed84a800e6048656c17be6e921787db2b5c6c0 (diff) | |
| download | linux-2a1f6bf079700f0f9d8045ab77b302aeb4d12c06.tar.xz | |
RISC-V: KVM: Add steal-update vcpu request
Add a new vcpu request to inform a vcpu that it should record its
steal-time information. The request is made each time it has been
detected that the vcpu task was not assigned a cpu for some time,
which is easy to do by making the request from vcpu-load. The record
function is just a stub for now and will be filled in with the rest
of the steal-time support functions in following patches.
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include/asm/kvm_host.h')
| -rw-r--r-- | arch/riscv/include/asm/kvm_host.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index 0eefd9c991ae..230b82c3118d 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -41,6 +41,7 @@ KVM_ARCH_REQ_FLAGS(4, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_HFENCE \ KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) +#define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6) enum kvm_riscv_hfence_type { KVM_RISCV_HFENCE_UNKNOWN = 0, @@ -372,4 +373,6 @@ bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, u64 mask); void kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu); void kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu); +void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu); + #endif /* __RISCV_KVM_HOST_H__ */ |