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

Pull kvm fixes from Paolo Bonzini:
 "RISC-V:

   - Fix VM hang in case of timer delta being zero

 ARM:

   - MMU fixes:

      - Read the MMU notifier seq before dropping the mmap lock to guard
        against reading a potentially stale VMA

      - Disable interrupts when walking user page tables to protect
        against the page table being freed

      - Read the MTE permissions for the VMA within the mmap lock
        critical section, avoiding the use of a potentally stale VMA
        pointer

   - vPMU fixes:

      - Return the sum of the current perf event value and PMC snapshot
        for reads from userspace

      - Don't save the value of guest writes to PMCR_EL0.{C,P}, which
        could otherwise lead to userspace erroneously resetting the vPMU
        during VM save/restore"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  riscv/kvm: Fix VM hang in case of timer delta being zero.
  KVM: arm64: Check for kvm_vma_mte_allowed in the critical section
  KVM: arm64: Disable interrupts while walking userspace PTs
  KVM: arm64: Retry fault if vma_lookup() results become invalid
  KVM: arm64: PMU: Don't save PMCR_EL0.{C,P} for the vCPU
  KVM: arm64: PMU: Fix GET_ONE_REG for vPMC regs to return the current value

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/riscv/kvm/vcpu_timer.c b/arch/riscv/kvm/vcpu_timer.c
index ad34519c8a13..3ac2ff6a65da 100644
--- a/arch/riscv/kvm/vcpu_timer.c
+++ b/arch/riscv/kvm/vcpu_timer.c
@@ -147,10 +147,8 @@ static void kvm_riscv_vcpu_timer_blocking(struct kvm_vcpu *vcpu)
 		return;
 
 	delta_ns = kvm_riscv_delta_cycles2ns(t->next_cycles, gt, t);
-	if (delta_ns) {
-		hrtimer_start(&t->hrt, ktime_set(0, delta_ns), HRTIMER_MODE_REL);
-		t->next_set = true;
-	}
+	hrtimer_start(&t->hrt, ktime_set(0, delta_ns), HRTIMER_MODE_REL);
+	t->next_set = true;
 }
 
 static void kvm_riscv_vcpu_timer_unblocking(struct kvm_vcpu *vcpu)