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| author |   Marc Zyngier <marc.zyngier@arm.com> | 2016-01-03 11:01:49 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2016-02-29 18:34:12 +0000 |
| commit | 0ca5565df8ef7534c0d85ec87e6c74f8ebe86e88 (patch) | |
| tree | 8e59e7da933cc8b9dd19992a5d6d956c26d70ca4 /arch/arm/kvm | |
| parent | ARM: KVM: Remove __kvm_hyp_code_start/__kvm_hyp_code_end (diff) | |
| download | linux-dev-0ca5565df8ef7534c0d85ec87e6c74f8ebe86e88.tar.xz linux-dev-0ca5565df8ef7534c0d85ec87e6c74f8ebe86e88.zip | |
ARM: KVM: Move VFP registers to a CPU context structure
In order to turn the WS code into something that looks a bit
more like the arm64 version, move the VFP registers into a
CPU context container for both the host and the guest.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/coproc.c | 20 | ||||
| -rw-r--r-- | arch/arm/kvm/interrupts.S | 10 |
2 files changed, 16 insertions, 14 deletions
diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c index f3d88dc388bc..1a643f38031d 100644 --- a/arch/arm/kvm/coproc.c +++ b/arch/arm/kvm/coproc.c @@ -901,7 +901,7 @@ static int vfp_get_reg(const struct kvm_vcpu *vcpu, u64 id, void __user *uaddr) if (vfpid < num_fp_regs()) { if (KVM_REG_SIZE(id) != 8) return -ENOENT; - return reg_to_user(uaddr, &vcpu->arch.vfp_guest.fpregs[vfpid], + return reg_to_user(uaddr, &vcpu->arch.ctxt.vfp.fpregs[vfpid], id); } @@ -911,13 +911,13 @@ static int vfp_get_reg(const struct kvm_vcpu *vcpu, u64 id, void __user *uaddr) switch (vfpid) { case KVM_REG_ARM_VFP_FPEXC: - return reg_to_user(uaddr, &vcpu->arch.vfp_guest.fpexc, id); + return reg_to_user(uaddr, &vcpu->arch.ctxt.vfp.fpexc, id); case KVM_REG_ARM_VFP_FPSCR: - return reg_to_user(uaddr, &vcpu->arch.vfp_guest.fpscr, id); + return reg_to_user(uaddr, &vcpu->arch.ctxt.vfp.fpscr, id); case KVM_REG_ARM_VFP_FPINST: - return reg_to_user(uaddr, &vcpu->arch.vfp_guest.fpinst, id); + return reg_to_user(uaddr, &vcpu->arch.ctxt.vfp.fpinst, id); case KVM_REG_ARM_VFP_FPINST2: - return reg_to_user(uaddr, &vcpu->arch.vfp_guest.fpinst2, id); + return reg_to_user(uaddr, &vcpu->arch.ctxt.vfp.fpinst2, id); case KVM_REG_ARM_VFP_MVFR0: val = fmrx(MVFR0); return reg_to_user(uaddr, &val, id); @@ -945,7 +945,7 @@ static int vfp_set_reg(struct kvm_vcpu *vcpu, u64 id, const void __user *uaddr) if (vfpid < num_fp_regs()) { if (KVM_REG_SIZE(id) != 8) return -ENOENT; - return reg_from_user(&vcpu->arch.vfp_guest.fpregs[vfpid], + return reg_from_user(&vcpu->arch.ctxt.vfp.fpregs[vfpid], uaddr, id); } @@ -955,13 +955,13 @@ static int vfp_set_reg(struct kvm_vcpu *vcpu, u64 id, const void __user *uaddr) switch (vfpid) { case KVM_REG_ARM_VFP_FPEXC: - return reg_from_user(&vcpu->arch.vfp_guest.fpexc, uaddr, id); + return reg_from_user(&vcpu->arch.ctxt.vfp.fpexc, uaddr, id); case KVM_REG_ARM_VFP_FPSCR: - return reg_from_user(&vcpu->arch.vfp_guest.fpscr, uaddr, id); + return reg_from_user(&vcpu->arch.ctxt.vfp.fpscr, uaddr, id); case KVM_REG_ARM_VFP_FPINST: - return reg_from_user(&vcpu->arch.vfp_guest.fpinst, uaddr, id); + return reg_from_user(&vcpu->arch.ctxt.vfp.fpinst, uaddr, id); case KVM_REG_ARM_VFP_FPINST2: - return reg_from_user(&vcpu->arch.vfp_guest.fpinst2, uaddr, id); + return reg_from_user(&vcpu->arch.ctxt.vfp.fpinst2, uaddr, id); /* These are invariant. */ case KVM_REG_ARM_VFP_MVFR0: if (reg_from_user(&val, uaddr, id)) diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 9d9cb71df449..7bfb28936914 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -172,10 +172,11 @@ __kvm_vcpu_return: #ifdef CONFIG_VFPv3 @ Switch VFP/NEON hardware state to the host's - add r7, vcpu, #VCPU_VFP_GUEST + add r7, vcpu, #(VCPU_GUEST_CTXT + CPU_CTXT_VFP) store_vfp_state r7 - add r7, vcpu, #VCPU_VFP_HOST + add r7, vcpu, #VCPU_HOST_CTXT ldr r7, [r7] + add r7, r7, #CPU_CTXT_VFP restore_vfp_state r7 after_vfp_restore: @@ -482,10 +483,11 @@ switch_to_guest_vfp: set_hcptr vmtrap, (HCPTR_TCP(10) | HCPTR_TCP(11)) @ Switch VFP/NEON hardware state to the guest's - add r7, r0, #VCPU_VFP_HOST + add r7, r0, #VCPU_HOST_CTXT ldr r7, [r7] + add r7, r7, #CPU_CTXT_VFP store_vfp_state r7 - add r7, r0, #VCPU_VFP_GUEST + add r7, r0, #(VCPU_GUEST_CTXT + CPU_CTXT_VFP) restore_vfp_state r7 pop {r3-r7} |