diff options
| author | Marc Zyngier <maz@kernel.org> | 2026-06-12 09:03:57 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2026-06-12 09:03:57 +0100 |
| commit | d1f0ed520bf9cc55979b5a966e2c4829fe47d4fd (patch) | |
| tree | cd2303ed204a0950a63c30ef2931c7df52dd6657 /arch/arm64/include | |
| parent | a1b504eda4496a96d184bafaf363a8b215661b7e (diff) | |
| parent | 435c466196148ae116f616e6cda97c33281defc2 (diff) | |
Merge branch kvm-arm64/nv-fp-elision into kvmarm-master/next
* kvm-arm64/nv-fp-elision:
: .
: Significantly reduce the overhead of the context switch between L1 and
: L2 guests by eliding the save/restore of the FP/SIMD/SVE registers, as
: this state is shared between the two guests, and therefore can be left
: live.
: .
KVM: arm64: nv: Don't save/restore FP register during a nested ERET or exception
KVM: arm64: nv: Track L2 to L1 exception emulation
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 65eead8362e0..c79747d5f4dd 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -1112,7 +1112,8 @@ struct kvm_vcpu_arch { #define IN_NESTED_ERET __vcpu_single_flag(sflags, BIT(7)) /* SError pending for nested guest */ #define NESTED_SERROR_PENDING __vcpu_single_flag(sflags, BIT(8)) - +/* KVM is currently emulating an L2 to L1 exception */ +#define IN_NESTED_EXCEPTION __vcpu_single_flag(sflags, BIT(9)) /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */ #define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) + \ |