Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "ARM:
   - HYP mode stub supports kexec/kdump on 32-bit
   - improved PMU support
   - virtual interrupt controller performance improvements
   - support for userspace virtual interrupt controller (slower, but
     necessary for KVM on the weird Broadcom SoCs used by the Raspberry
     Pi 3)

  MIPS:
   - basic support for hardware virtualization (ImgTec P5600/P6600/I6400
     and Cavium Octeon III)

  PPC:
   - in-kernel acceleration for VFIO

  s390:
   - support for guests without storage keys
   - adapter interruption suppression

  x86:
   - usual range of nVMX improvements, notably nested EPT support for
     accessed and dirty bits
   - emulation of CPL3 CPUID faulting

  generic:
   - first part of VCPU thread request API
   - kvm_stat improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
  kvm: nVMX: Don't validate disabled secondary controls
  KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kick
  Revert "KVM: Support vCPU-based gfn->hva cache"
  tools/kvm: fix top level makefile
  KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING
  KVM: Documentation: remove VM mmap documentation
  kvm: nVMX: Remove superfluous VMX instruction fault checks
  KVM: x86: fix emulation of RSM and IRET instructions
  KVM: mark requests that need synchronization
  KVM: return if kvm_vcpu_wake_up() did wake up the VCPU
  KVM: add explicit barrier to kvm_vcpu_kick
  KVM: perform a wake_up in kvm_make_all_cpus_request
  KVM: mark requests that do not need a wakeup
  KVM: remove #ifndef CONFIG_S390 around kvm_vcpu_wake_up
  KVM: x86: always use kvm_make_request instead of set_bit
  KVM: add kvm_{test,clear}_request to replace {test,clear}_bit
  s390: kvm: Cpu model support for msa6, msa7 and msa8
  KVM: x86: remove irq disablement around KVM_SET_CLOCK/KVM_GET_CLOCK
  kvm: better MWAIT emulation for guests
  KVM: x86: virtualize cpuid faulting
  ...

1 files changed, 7 insertions, 71 deletions

diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c
index c8aeb7b91ec8..a3f18d362366 100644
--- a/virt/kvm/arm/hyp/vgic-v2-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v2-sr.c
@@ -22,49 +22,6 @@
 #include <asm/kvm_emulate.h>
 #include <asm/kvm_hyp.h>
 
-static void __hyp_text save_maint_int_state(struct kvm_vcpu *vcpu,
-					    void __iomem *base)
-{
-	struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
-	int nr_lr = (kern_hyp_va(&kvm_vgic_global_state))->nr_lr;
-	u32 eisr0, eisr1;
-	int i;
-	bool expect_mi;
-
-	expect_mi = !!(cpu_if->vgic_hcr & GICH_HCR_UIE);
-
-	for (i = 0; i < nr_lr; i++) {
-		if (!(vcpu->arch.vgic_cpu.live_lrs & (1UL << i)))
-				continue;
-
-		expect_mi |= (!(cpu_if->vgic_lr[i] & GICH_LR_HW) &&
-			      (cpu_if->vgic_lr[i] & GICH_LR_EOI));
-	}
-
-	if (expect_mi) {
-		cpu_if->vgic_misr = readl_relaxed(base + GICH_MISR);
-
-		if (cpu_if->vgic_misr & GICH_MISR_EOI) {
-			eisr0  = readl_relaxed(base + GICH_EISR0);
-			if (unlikely(nr_lr > 32))
-				eisr1  = readl_relaxed(base + GICH_EISR1);
-			else
-				eisr1 = 0;
-		} else {
-			eisr0 = eisr1 = 0;
-		}
-	} else {
-		cpu_if->vgic_misr = 0;
-		eisr0 = eisr1 = 0;
-	}
-
-#ifdef CONFIG_CPU_BIG_ENDIAN
-	cpu_if->vgic_eisr = ((u64)eisr0 << 32) | eisr1;
-#else
-	cpu_if->vgic_eisr = ((u64)eisr1 << 32) | eisr0;
-#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;
@@ -87,13 +44,10 @@ static void __hyp_text save_elrsr(struct kvm_vcpu *vcpu, void __iomem *base)
 static void __hyp_text save_lrs(struct kvm_vcpu *vcpu, void __iomem *base)
 {
 	struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2;
-	int nr_lr = (kern_hyp_va(&kvm_vgic_global_state))->nr_lr;
 	int i;
+	u64 used_lrs = vcpu->arch.vgic_cpu.used_lrs;
 
-	for (i = 0; i < nr_lr; i++) {
-		if (!(vcpu->arch.vgic_cpu.live_lrs & (1UL << i)))
-			continue;
-
+	for (i = 0; i < used_lrs; i++) {
 		if (cpu_if->vgic_elrsr & (1UL << i))
 			cpu_if->vgic_lr[i] &= ~GICH_LR_STATE;
 		else
@@ -110,26 +64,20 @@ 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);
+	u64 used_lrs = vcpu->arch.vgic_cpu.used_lrs;
 
 	if (!base)
 		return;
 
-	cpu_if->vgic_vmcr = readl_relaxed(base + GICH_VMCR);
-
-	if (vcpu->arch.vgic_cpu.live_lrs) {
+	if (used_lrs) {
 		cpu_if->vgic_apr = readl_relaxed(base + GICH_APR);
 
-		save_maint_int_state(vcpu, base);
 		save_elrsr(vcpu, base);
 		save_lrs(vcpu, base);
 
 		writel_relaxed(0, base + GICH_HCR);
-
-		vcpu->arch.vgic_cpu.live_lrs = 0;
 	} else {
-		cpu_if->vgic_eisr = 0;
 		cpu_if->vgic_elrsr = ~0UL;
-		cpu_if->vgic_misr = 0;
 		cpu_if->vgic_apr = 0;
 	}
 }
@@ -141,32 +89,20 @@ void __hyp_text __vgic_v2_restore_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);
-	int nr_lr = (kern_hyp_va(&kvm_vgic_global_state))->nr_lr;
 	int i;
-	u64 live_lrs = 0;
+	u64 used_lrs = vcpu->arch.vgic_cpu.used_lrs;
 
 	if (!base)
 		return;
 
-
-	for (i = 0; i < nr_lr; i++)
-		if (cpu_if->vgic_lr[i] & GICH_LR_STATE)
-			live_lrs |= 1UL << i;
-
-	if (live_lrs) {
+	if (used_lrs) {
 		writel_relaxed(cpu_if->vgic_hcr, base + GICH_HCR);
 		writel_relaxed(cpu_if->vgic_apr, base + GICH_APR);
-		for (i = 0; i < nr_lr; i++) {
-			if (!(live_lrs & (1UL << i)))
-				continue;
-
+		for (i = 0; i < used_lrs; i++) {
 			writel_relaxed(cpu_if->vgic_lr[i],
 				       base + GICH_LR0 + (i * 4));
 		}
 	}
-
-	writel_relaxed(cpu_if->vgic_vmcr, base + GICH_VMCR);
-	vcpu->arch.vgic_cpu.live_lrs = live_lrs;
 }
 
 #ifdef CONFIG_ARM64