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KVM: arm/arm64: vgic-v2: Move GICH_ELRSR saving to its own function 

In order to make the saving path slightly more readable and
prepare for some more optimizations, let's move the GICH_ELRSR
saving to its own function.

No functional change.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2016-02-09 17:07:18 +00:00
parent c813bb17f2
commit 2a1044f8b7
1 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
virt/kvm/arm/hyp/vgic-v2-sr.c
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@ -64,6 +64,25 @@ static void __hyp_text save_maint_int_state(struct kvm_vcpu *vcpu,
#endif
}
static void __hyp_text save_elrsr(struct kvm_vcpu *vcpu, void __iomem *base)
{
struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
int nr_lr = vcpu->arch.vgic_cpu.nr_lr;
u32 elrsr0, elrsr1;
elrsr0 = readl_relaxed(base + GICH_ELRSR0);
if (unlikely(nr_lr > 32))
elrsr1 = readl_relaxed(base + GICH_ELRSR1);
else
elrsr1 = 0;
#ifdef CONFIG_CPU_BIG_ENDIAN
cpu_if->vgic_elrsr = ((u64)elrsr0 << 32) | elrsr1;
#else
cpu_if->vgic_elrsr = ((u64)elrsr1 << 32) | elrsr0;
#endif
}
/* vcpu is already in the HYP VA space */
void __hyp_text __vgic_v2_save_state(struct kvm_vcpu *vcpu)
{
@ -71,7 +90,6 @@ void __hyp_text __vgic_v2_save_state(struct kvm_vcpu *vcpu)
struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
struct vgic_dist *vgic = &kvm->arch.vgic;
void __iomem *base = kern_hyp_va(vgic->vctrl_base);
u32 elrsr0, elrsr1;
int i, nr_lr;
if (!base)
@ -81,22 +99,10 @@ void __hyp_text __vgic_v2_save_state(struct kvm_vcpu *vcpu)
cpu_if->vgic_vmcr = readl_relaxed(base + GICH_VMCR);
if (vcpu->arch.vgic_cpu.live_lrs) {
elrsr0 = readl_relaxed(base + GICH_ELRSR0);
cpu_if->vgic_apr = readl_relaxed(base + GICH_APR);
if (unlikely(nr_lr > 32)) {
elrsr1 = readl_relaxed(base + GICH_ELRSR1);
} else {
elrsr1 = 0;
}
#ifdef CONFIG_CPU_BIG_ENDIAN
cpu_if->vgic_elrsr = ((u64)elrsr0 << 32) | elrsr1;
#else
cpu_if->vgic_elrsr = ((u64)elrsr1 << 32) | elrsr0;
#endif
cpu_if->vgic_apr = readl_relaxed(base + GICH_APR);
save_maint_int_state(vcpu, base);
save_elrsr(vcpu, base);
for (i = 0; i < nr_lr; i++)
if (vcpu->arch.vgic_cpu.live_lrs & (1UL << i))