On Mon, Aug 10, 2015 at 09:26:01PM +0800, Zhichao Huang wrote: > Redefine kvm_cpu_context_t as a new struct that include the cp14 states, > which we used to save the host cp14 states. > > Signed-off-by: Zhichao Huang <[email protected]> > --- > arch/arm/include/asm/kvm_host.h | 6 +++++- > arch/arm/kernel/asm-offsets.c | 4 +++- > arch/arm/kvm/interrupts.S | 6 ++++-- > 3 files changed, 12 insertions(+), 4 deletions(-) > > diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h > index 63ac005..fc461ac 100644 > --- a/arch/arm/include/asm/kvm_host.h > +++ b/arch/arm/include/asm/kvm_host.h > @@ -91,7 +91,11 @@ struct kvm_vcpu_fault_info { > u32 hyp_pc; /* PC when exception was taken from Hyp mode */ > }; > > -typedef struct vfp_hard_struct kvm_cpu_context_t; > +struct kvm_cpu_context { > + struct vfp_hard_struct vfp; > + u32 cp14[NR_CP14_REGS]; > +}; > +typedef struct kvm_cpu_context kvm_cpu_context_t; > > struct kvm_vcpu_arch { > struct kvm_regs regs; > diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c > index 9158de0..cee4254 100644 > --- a/arch/arm/kernel/asm-offsets.c > +++ b/arch/arm/kernel/asm-offsets.c > @@ -175,7 +175,9 @@ int main(void) > DEFINE(VCPU_CP14, offsetof(struct kvm_vcpu, arch.cp14)); > DEFINE(VCPU_CP15, offsetof(struct kvm_vcpu, arch.cp15)); > DEFINE(VCPU_VFP_GUEST, offsetof(struct kvm_vcpu, arch.vfp_guest)); > - DEFINE(VCPU_VFP_HOST, offsetof(struct kvm_vcpu, > arch.host_cpu_context)); > + DEFINE(VCPU_HOST_CONTEXT, offsetof(struct kvm_vcpu, > arch.host_cpu_context)); > + DEFINE(VCPU_VFP_HOST, offsetof(struct kvm_cpu_context, vfp)); > + DEFINE(VCPU_CP14_HOST, offsetof(struct kvm_cpu_context, cp14));
it's a bit weird to call these last two VCPU_ something when they're not offsets of the vcpu struct... > DEFINE(VCPU_REGS, offsetof(struct kvm_vcpu, arch.regs)); > DEFINE(VCPU_USR_REGS, offsetof(struct kvm_vcpu, > arch.regs.usr_regs)); > DEFINE(VCPU_SVC_REGS, offsetof(struct kvm_vcpu, > arch.regs.svc_regs)); > diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S > index 48333ff..d4ff22e 100644 > --- a/arch/arm/kvm/interrupts.S > +++ b/arch/arm/kvm/interrupts.S > @@ -176,8 +176,9 @@ __kvm_vcpu_return: > @ Switch VFP/NEON hardware state to the host's > add r7, vcpu, #VCPU_VFP_GUEST > store_vfp_state r7 > - add r7, vcpu, #VCPU_VFP_HOST > + add r7, vcpu, #VCPU_HOST_CONTEXT > ldr r7, [r7] > + add r7, r7, #VCPU_VFP_HOST > restore_vfp_state r7 > > after_vfp_restore: > @@ -484,8 +485,9 @@ 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_CONTEXT > ldr r7, [r7] > + add r7, r7, #VCPU_VFP_HOST > store_vfp_state r7 > add r7, r0, #VCPU_VFP_GUEST > restore_vfp_state r7 > -- > 1.7.12.4 > Otherwise this look ok. -Christoffer -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
