summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kvm/book3s_pr.c72
-rw-r--r--arch/powerpc/kvm/booke.c16
-rw-r--r--arch/powerpc/kvm/booke.h4
3 files changed, 19 insertions, 73 deletions
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 2bb425b22461..aedba681bb94 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -567,16 +567,16 @@ void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
* both the traditional FP registers and the added VSX
* registers into thread.fp_state.fpr[].
*/
- if (current->thread.regs->msr & MSR_FP)
+ if (t->regs->msr & MSR_FP)
giveup_fpu(current);
- vcpu->arch.fp = t->fp_state;
+ t->fp_save_area = NULL;
}
#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
if (current->thread.regs->msr & MSR_VEC)
giveup_altivec(current);
- vcpu->arch.vr = t->vr_state;
+ t->vr_save_area = NULL;
}
#endif
@@ -661,22 +661,20 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
#endif
if (msr & MSR_FP) {
- t->fp_state = vcpu->arch.fp;
- t->fpexc_mode = 0;
enable_kernel_fp();
- load_fp_state(&t->fp_state);
+ load_fp_state(&vcpu->arch.fp);
+ t->fp_save_area = &vcpu->arch.fp;
}
if (msr & MSR_VEC) {
#ifdef CONFIG_ALTIVEC
- t->vr_state = vcpu->arch.vr;
- t->vrsave = -1;
enable_kernel_altivec();
- load_vr_state(&t->vr_state);
+ load_vr_state(&vcpu->arch.vr);
+ t->vr_save_area = &vcpu->arch.vr;
#endif
}
- current->thread.regs->msr |= msr;
+ t->regs->msr |= msr;
vcpu->arch.guest_owned_ext |= msr;
kvmppc_recalc_shadow_msr(vcpu);
@@ -697,12 +695,12 @@ static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
if (lost_ext & MSR_FP) {
enable_kernel_fp();
- load_fp_state(&current->thread.fp_state);
+ load_fp_state(&vcpu->arch.fp);
}
#ifdef CONFIG_ALTIVEC
if (lost_ext & MSR_VEC) {
enable_kernel_altivec();
- load_vr_state(&current->thread.vr_state);
+ load_vr_state(&vcpu->arch.vr);
}
#endif
current->thread.regs->msr |= lost_ext;
@@ -1204,17 +1202,9 @@ static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
int ret;
- struct thread_fp_state fp;
- int fpexc_mode;
#ifdef CONFIG_ALTIVEC
- struct thread_vr_state vr;
unsigned long uninitialized_var(vrsave);
- int used_vr;
#endif
-#ifdef CONFIG_VSX
- int used_vsr;
-#endif
- ulong ext_msr;
/* Check if we can run the vcpu at all */
if (!vcpu->arch.sane) {
@@ -1236,33 +1226,22 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
goto out;
}
- /* Save FPU state in stack */
+ /* Save FPU state in thread_struct */
if (current->thread.regs->msr & MSR_FP)
giveup_fpu(current);
- fp = current->thread.fp_state;
- fpexc_mode = current->thread.fpexc_mode;
#ifdef CONFIG_ALTIVEC
- /* Save Altivec state in stack */
- used_vr = current->thread.used_vr;
- if (used_vr) {
- if (current->thread.regs->msr & MSR_VEC)
- giveup_altivec(current);
- vr = current->thread.vr_state;
- vrsave = current->thread.vrsave;
- }
+ /* Save Altivec state in thread_struct */
+ if (current->thread.regs->msr & MSR_VEC)
+ giveup_altivec(current);
#endif
#ifdef CONFIG_VSX
- /* Save VSX state in stack */
- used_vsr = current->thread.used_vsr;
- if (used_vsr && (current->thread.regs->msr & MSR_VSX))
+ /* Save VSX state in thread_struct */
+ if (current->thread.regs->msr & MSR_VSX)
__giveup_vsx(current);
#endif
- /* Remember the MSR with disabled extensions */
- ext_msr = current->thread.regs->msr;
-
/* Preload FPU if it's enabled */
if (vcpu->arch.shared->msr & MSR_FP)
kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
@@ -1277,25 +1256,6 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
/* Make sure we save the guest FPU/Altivec/VSX state */
kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX);
- current->thread.regs->msr = ext_msr;
-
- /* Restore FPU/VSX state from stack */
- current->thread.fp_state = fp;
- current->thread.fpexc_mode = fpexc_mode;
-
-#ifdef CONFIG_ALTIVEC
- /* Restore Altivec state from stack */
- if (used_vr && current->thread.used_vr) {
- current->thread.vr_state = vr;
- current->thread.vrsave = vrsave;
- }
- current->thread.used_vr = used_vr;
-#endif
-
-#ifdef CONFIG_VSX
- current->thread.used_vsr = used_vsr;
-#endif
-
out:
vcpu->mode = OUTSIDE_GUEST_MODE;
return ret;
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 0033465ecc3f..a983ccaf3cce 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -682,10 +682,6 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
int ret, s;
struct thread_struct thread;
-#ifdef CONFIG_PPC_FPU
- struct thread_fp_state fp;
- int fpexc_mode;
-#endif
if (!vcpu->arch.sane) {
kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -703,11 +699,6 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
#ifdef CONFIG_PPC_FPU
/* Save userspace FPU state in stack */
enable_kernel_fp();
- fp = current->thread.fp_state;
- fpexc_mode = current->thread.fpexc_mode;
-
- /* Restore guest FPU state to thread */
- current->thread.fp_state = vcpu->arch.fp;
/*
* Since we can't trap on MSR_FP in GS-mode, we consider the guest
@@ -741,13 +732,6 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
kvmppc_save_guest_fp(vcpu);
vcpu->fpu_active = 0;
-
- /* Save guest FPU state from thread */
- vcpu->arch.fp = current->thread.fp_state;
-
- /* Restore userspace FPU state from stack */
- current->thread.fp_state = fp;
- current->thread.fpexc_mode = fpexc_mode;
#endif
out:
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index fe59f225327f..b632cd35919b 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -137,7 +137,8 @@ static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
#ifdef CONFIG_PPC_FPU
if (vcpu->fpu_active && !(current->thread.regs->msr & MSR_FP)) {
enable_kernel_fp();
- load_fp_state(&current->thread.fp_state);
+ load_fp_state(&vcpu->arch.fp);
+ current->thread.fp_save_area = &vcpu->arch.fp;
current->thread.regs->msr |= MSR_FP;
}
#endif
@@ -152,6 +153,7 @@ static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
#ifdef CONFIG_PPC_FPU
if (vcpu->fpu_active && (current->thread.regs->msr & MSR_FP))
giveup_fpu(current);
+ current->thread.fp_save_area = NULL;
#endif
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-10 05:28:57 +0100