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| author | Fuad Tabba <tabba@google.com> | 2024-06-03 14:28:43 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2024-06-04 16:06:32 +0200 |
| commit | 87bb39ed40bdf1596b8820e800226e24eb642677 (patch) | |
| tree | 0897925b7249ad7d1acc5c6f69846a8fd2ab5f76 /arch | |
| parent | KVM: arm64: nv: Expose BTI and CSV_frac to a guest hypervisor (diff) | |
| download | linux-87bb39ed40bdf1596b8820e800226e24eb642677.tar.xz linux-87bb39ed40bdf1596b8820e800226e24eb642677.zip | |
KVM: arm64: Reintroduce __sve_save_state
Now that the hypervisor is handling the host sve state in
protected mode, it needs to be able to save it.
This reverts commit e66425fc9ba3 ("KVM: arm64: Remove unused
__sve_save_state").
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-2-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/kvm_hyp.h | 1 | ||||
| -rw-r--r-- | arch/arm64/kvm/hyp/fpsimd.S | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h index 3e80464f8953..2ab23589339a 100644 --- a/arch/arm64/include/asm/kvm_hyp.h +++ b/arch/arm64/include/asm/kvm_hyp.h @@ -111,6 +111,7 @@ void __debug_restore_host_buffers_nvhe(struct kvm_vcpu *vcpu); void __fpsimd_save_state(struct user_fpsimd_state *fp_regs); void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs); +void __sve_save_state(void *sve_pffr, u32 *fpsr); void __sve_restore_state(void *sve_pffr, u32 *fpsr); u64 __guest_enter(struct kvm_vcpu *vcpu); diff --git a/arch/arm64/kvm/hyp/fpsimd.S b/arch/arm64/kvm/hyp/fpsimd.S index 61e6f3ba7b7d..e950875e31ce 100644 --- a/arch/arm64/kvm/hyp/fpsimd.S +++ b/arch/arm64/kvm/hyp/fpsimd.S @@ -25,3 +25,9 @@ SYM_FUNC_START(__sve_restore_state) sve_load 0, x1, x2, 3 ret SYM_FUNC_END(__sve_restore_state) + +SYM_FUNC_START(__sve_save_state) + mov x2, #1 + sve_save 0, x1, x2, 3 + ret +SYM_FUNC_END(__sve_save_state) |