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KVM: arm64: Remove eager host SVE state saving

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Now that the host SVE context can be saved on demand from Hyp,
there is no longer any need to save this state in advance before
entering the guest.

This patch removes the relevant call to
kvm_fpsimd_flush_cpu_state().

Since the problem that function was intended to solve now no longer
exists, the function and its dependencies are also deleted.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Dave Martin
2018-04-20 17:39:16 +01:00
committed by Marc Zyngier
parent 85acda3b4a
commit 21cdd7fd76
4 changed files with 0 additions and 37 deletions
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10
arch/arm64/include/asm/kvm_host.h
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@@ -457,16 +457,6 @@ static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
}
#endif
/*
* All host FP/SIMD state is restored on guest exit, so nothing needs
* doing here except in the SVE case:
*/
static inline void kvm_fpsimd_flush_cpu_state(void)
{
if (system_supports_sve())
sve_flush_cpu_state();
}
static inline void kvm_arm_vhe_guest_enter(void)
{
local_daif_mask();