From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.smarduch@samsung.com (Mario Smarduch) Date: Mon, 05 Oct 2015 19:33:13 -0700 Subject: [PATCH v2 1/2] add hooks for armv8 fp/simd lazy switch In-Reply-To: <1444098794-19244-1-git-send-email-m.smarduch@samsung.com> References: <1444098794-19244-1-git-send-email-m.smarduch@samsung.com> Message-ID: <1444098794-19244-2-git-send-email-m.smarduch@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds hooks to support fp/simd lazy switch. A vcpu flag to track fp/simd state, and flag offset in vcpu structure. Signed-off-by: Mario Smarduch --- arch/arm64/include/asm/kvm_host.h | 3 +++ arch/arm64/kernel/asm-offsets.c | 1 + 2 files changed, 4 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 4562459..03f25d0 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -157,6 +157,9 @@ struct kvm_vcpu_arch { /* Interrupt related fields */ u64 irq_lines; /* IRQ and FIQ levels */ + /* Track fp/simd lazy switch */ + u32 vfp_lazy; + /* Cache some mmu pages needed inside spinlock regions */ struct kvm_mmu_memory_cache mmu_page_cache; diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 8d89cf8..8311da4 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -124,6 +124,7 @@ int main(void) DEFINE(VCPU_HCR_EL2, offsetof(struct kvm_vcpu, arch.hcr_el2)); DEFINE(VCPU_MDCR_EL2, offsetof(struct kvm_vcpu, arch.mdcr_el2)); DEFINE(VCPU_IRQ_LINES, offsetof(struct kvm_vcpu, arch.irq_lines)); + DEFINE(VCPU_VFP_LAZY, offsetof(struct kvm_vcpu, arch.vfp_lazy)); DEFINE(VCPU_HOST_CONTEXT, offsetof(struct kvm_vcpu, arch.host_cpu_context)); DEFINE(VCPU_HOST_DEBUG_STATE, offsetof(struct kvm_vcpu, arch.host_debug_state)); DEFINE(VCPU_TIMER_CNTV_CTL, offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_ctl)); -- 1.9.1