From mboxrd@z Thu Jan 1 00:00:00 1970 From: m.smarduch@samsung.com (Mario Smarduch) Date: Sun, 06 Dec 2015 17:07:12 -0800 Subject: [PATCH v5 1/3] KVM/arm: add hooks for armv7 fp/simd lazy switch support In-Reply-To: <1449450434-2929-1-git-send-email-m.smarduch@samsung.com> References: <1449450434-2929-1-git-send-email-m.smarduch@samsung.com> Message-ID: <1449450434-2929-2-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 vcpu fields to configure hcptr trap register which is also used to determine if fp/simd registers are dirty. Adds a field to save host FPEXC, and offsets associated offsets. Signed-off-by: Mario Smarduch --- arch/arm/include/asm/kvm_host.h | 6 ++++++ arch/arm/kernel/asm-offsets.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 3df1e97..09bb1f2 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -104,6 +104,12 @@ struct kvm_vcpu_arch { /* HYP trapping configuration */ u32 hcr; + /* HYP Co-processor fp/simd and trace trapping configuration */ + u32 hcptr; + + /* Save host FPEXC register to later restore on vcpu put */ + u32 host_fpexc; + /* Interrupt related fields */ u32 irq_lines; /* IRQ and FIQ levels */ diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 871b826..28ebd4c 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -185,6 +185,8 @@ int main(void) DEFINE(VCPU_PC, offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_pc)); DEFINE(VCPU_CPSR, offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_cpsr)); DEFINE(VCPU_HCR, offsetof(struct kvm_vcpu, arch.hcr)); + DEFINE(VCPU_HCPTR, offsetof(struct kvm_vcpu, arch.hcptr)); + DEFINE(VCPU_VFP_HOST_FPEXC, offsetof(struct kvm_vcpu, arch.host_fpexc)); DEFINE(VCPU_IRQ_LINES, offsetof(struct kvm_vcpu, arch.irq_lines)); DEFINE(VCPU_HSR, offsetof(struct kvm_vcpu, arch.fault.hsr)); DEFINE(VCPU_HxFAR, offsetof(struct kvm_vcpu, arch.fault.hxfar)); -- 1.9.1