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

Pull kvm updates from Paolo Bonzini:
 "S390:

   - ultravisor communication device driver

   - fix TEID on terminating storage key ops

  RISC-V:

   - Added Sv57x4 support for G-stage page table

   - Added range based local HFENCE functions

   - Added remote HFENCE functions based on VCPU requests

   - Added ISA extension registers in ONE_REG interface

   - Updated KVM RISC-V maintainers entry to cover selftests support

  ARM:

   - Add support for the ARMv8.6 WFxT extension

   - Guard pages for the EL2 stacks

   - Trap and emulate AArch32 ID registers to hide unsupported features

   - Ability to select and save/restore the set of hypercalls exposed to
     the guest

   - Support for PSCI-initiated suspend in collaboration with userspace

   - GICv3 register-based LPI invalidation support

   - Move host PMU event merging into the vcpu data structure

   - GICv3 ITS save/restore fixes

   - The usual set of small-scale cleanups and fixes

  x86:

   - New ioctls to get/set TSC frequency for a whole VM

   - Allow userspace to opt out of hypercall patching

   - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr

  AMD SEV improvements:

   - Add KVM_EXIT_SHUTDOWN metadata for SEV-ES

   - V_TSC_AUX support

  Nested virtualization improvements for AMD:

   - Support for "nested nested" optimizations (nested vVMLOAD/VMSAVE,
     nested vGIF)

   - Allow AVIC to co-exist with a nested guest running

   - Fixes for LBR virtualizations when a nested guest is running, and
     nested LBR virtualization support

   - PAUSE filtering for nested hypervisors

  Guest support:

   - Decoupling of vcpu_is_preempted from PV spinlocks"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (199 commits)
  KVM: x86: Fix the intel_pt PMI handling wrongly considered from guest
  KVM: selftests: x86: Sync the new name of the test case to .gitignore
  Documentation: kvm: reorder ARM-specific section about KVM_SYSTEM_EVENT_SUSPEND
  x86, kvm: use correct GFP flags for preemption disabled
  KVM: LAPIC: Drop pending LAPIC timer injection when canceling the timer
  x86/kvm: Alloc dummy async #PF token outside of raw spinlock
  KVM: x86: avoid calling x86 emulator without a decoded instruction
  KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak
  x86/fpu: KVM: Set the base guest FPU uABI size to sizeof(struct kvm_xsave)
  s390/uv_uapi: depend on CONFIG_S390
  KVM: selftests: x86: Fix test failure on arch lbr capable platforms
  KVM: LAPIC: Trace LAPIC timer expiration on every vmentry
  KVM: s390: selftest: Test suppression indication on key prot exception
  KVM: s390: Don't indicate suppression on dirtying, failing memop
  selftests: drivers/s390x: Add uvdevice tests
  drivers/s390/char: Add Ultravisor io device
  MAINTAINERS: Update KVM RISC-V entry to cover selftests support
  RISC-V: KVM: Introduce ISA extension register
  RISC-V: KVM: Cleanup stale TLB entries when host CPU changes
  RISC-V: KVM: Add remote HFENCE functions based on VCPU requests
  ...

1 files changed, 18 insertions, 12 deletions

diff --git a/arch/riscv/kvm/vmid.c b/arch/riscv/kvm/vmid.c
index 2fa4f7b1813d..9f764df125db 100644
--- a/arch/riscv/kvm/vmid.c
+++ b/arch/riscv/kvm/vmid.c
@@ -11,16 +11,16 @@
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/smp.h>
 #include <linux/kvm_host.h>
 #include <asm/csr.h>
-#include <asm/sbi.h>
 
 static unsigned long vmid_version = 1;
 static unsigned long vmid_next;
 static unsigned long vmid_bits;
 static DEFINE_SPINLOCK(vmid_lock);
 
-void kvm_riscv_stage2_vmid_detect(void)
+void kvm_riscv_gstage_vmid_detect(void)
 {
 	unsigned long old;
 
@@ -33,19 +33,19 @@ void kvm_riscv_stage2_vmid_detect(void)
 	csr_write(CSR_HGATP, old);
 
 	/* We polluted local TLB so flush all guest TLB */
-	__kvm_riscv_hfence_gvma_all();
+	kvm_riscv_local_hfence_gvma_all();
 
 	/* We don't use VMID bits if they are not sufficient */
 	if ((1UL << vmid_bits) < num_possible_cpus())
 		vmid_bits = 0;
 }
 
-unsigned long kvm_riscv_stage2_vmid_bits(void)
+unsigned long kvm_riscv_gstage_vmid_bits(void)
 {
 	return vmid_bits;
 }
 
-int kvm_riscv_stage2_vmid_init(struct kvm *kvm)
+int kvm_riscv_gstage_vmid_init(struct kvm *kvm)
 {
 	/* Mark the initial VMID and VMID version invalid */
 	kvm->arch.vmid.vmid_version = 0;
@@ -54,7 +54,7 @@ int kvm_riscv_stage2_vmid_init(struct kvm *kvm)
 	return 0;
 }
 
-bool kvm_riscv_stage2_vmid_ver_changed(struct kvm_vmid *vmid)
+bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid)
 {
 	if (!vmid_bits)
 		return false;
@@ -63,13 +63,18 @@ bool kvm_riscv_stage2_vmid_ver_changed(struct kvm_vmid *vmid)
 			READ_ONCE(vmid_version));
 }
 
-void kvm_riscv_stage2_vmid_update(struct kvm_vcpu *vcpu)
+static void __local_hfence_gvma_all(void *info)
+{
+	kvm_riscv_local_hfence_gvma_all();
+}
+
+void kvm_riscv_gstage_vmid_update(struct kvm_vcpu *vcpu)
 {
 	unsigned long i;
 	struct kvm_vcpu *v;
 	struct kvm_vmid *vmid = &vcpu->kvm->arch.vmid;
 
-	if (!kvm_riscv_stage2_vmid_ver_changed(vmid))
+	if (!kvm_riscv_gstage_vmid_ver_changed(vmid))
 		return;
 
 	spin_lock(&vmid_lock);
@@ -78,7 +83,7 @@ void kvm_riscv_stage2_vmid_update(struct kvm_vcpu *vcpu)
 	 * We need to re-check the vmid_version here to ensure that if
 	 * another vcpu already allocated a valid vmid for this vm.
 	 */
-	if (!kvm_riscv_stage2_vmid_ver_changed(vmid)) {
+	if (!kvm_riscv_gstage_vmid_ver_changed(vmid)) {
 		spin_unlock(&vmid_lock);
 		return;
 	}
@@ -96,12 +101,13 @@ void kvm_riscv_stage2_vmid_update(struct kvm_vcpu *vcpu)
 		 * instances is invalid and we have force VMID re-assignement
 		 * for all Guest instances. The Guest instances that were not
 		 * running will automatically pick-up new VMIDs because will
-		 * call kvm_riscv_stage2_vmid_update() whenever they enter
+		 * call kvm_riscv_gstage_vmid_update() whenever they enter
 		 * in-kernel run loop. For Guest instances that are already
 		 * running, we force VM exits on all host CPUs using IPI and
 		 * flush all Guest TLBs.
 		 */
-		sbi_remote_hfence_gvma(cpu_online_mask, 0, 0);
+		on_each_cpu_mask(cpu_online_mask, __local_hfence_gvma_all,
+				 NULL, 1);
 	}
 
 	vmid->vmid = vmid_next;
@@ -112,7 +118,7 @@ void kvm_riscv_stage2_vmid_update(struct kvm_vcpu *vcpu)
 
 	spin_unlock(&vmid_lock);
 
-	/* Request stage2 page table update for all VCPUs */
+	/* Request G-stage page table update for all VCPUs */
 	kvm_for_each_vcpu(i, v, vcpu->kvm)
 		kvm_make_request(KVM_REQ_UPDATE_HGATP, v);
 }