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ARM: KVM: Move VFP registers to a CPU context structure

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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>
This commit is contained in:
Marc Zyngier
2016-01-03 11:01:49 +00:00
parent 42428525a9
commit 0ca5565df8
4 changed files with 26 additions and 20 deletions
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10
arch/arm/kvm/interrupts.S
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@@ -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}