KVM/arm64 fixes for 5.14, take #1

- Fix MTE shared page detection
 
 - Fix selftest use of obsolete pthread_yield() in favour of sched_yield()
 
 - Enable selftest's use of PMU registers when asked to
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Merge tag 'kvmarm-fixes-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.14, take #1

- Fix MTE shared page detection

- Fix selftest use of obsolete pthread_yield() in favour of sched_yield()

- Enable selftest's use of PMU registers when asked to

arch/arm64/kvm/mmu.c

@@ -947,7 +947,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
 		vma_shift = get_vma_page_shift(vma, hva);
 	}
 
-	shared = (vma->vm_flags & VM_PFNMAP);
+	shared = (vma->vm_flags & VM_SHARED);
 
 	switch (vma_shift) {
 #ifndef __PAGETABLE_PMD_FOLDED

tools/testing/selftests/kvm/aarch64/get-reg-list.c

@@ -1019,7 +1019,8 @@ static __u64 sve_rejects_set[] = {
 #define VREGS_SUBLIST \
 	{ "vregs", .regs = vregs, .regs_n = ARRAY_SIZE(vregs), }
 #define PMU_SUBLIST \
-	{ "pmu", .regs = pmu_regs, .regs_n = ARRAY_SIZE(pmu_regs), }
+	{ "pmu", .capability = KVM_CAP_ARM_PMU_V3, .feature = KVM_ARM_VCPU_PMU_V3, \
+	  .regs = pmu_regs, .regs_n = ARRAY_SIZE(pmu_regs), }
 #define SVE_SUBLIST \
 	{ "sve", .capability = KVM_CAP_ARM_SVE, .feature = KVM_ARM_VCPU_SVE, .finalize = true, \
 	  .regs = sve_regs, .regs_n = ARRAY_SIZE(sve_regs), \

tools/testing/selftests/kvm/steal_time.c

@@ -320,7 +320,7 @@ int main(int ac, char **av)
 		run_delay = get_run_delay();
 		pthread_create(&thread, &attr, do_steal_time, NULL);
 		do
-			pthread_yield();
+			sched_yield();
 		while (get_run_delay() - run_delay < MIN_RUN_DELAY_NS);
 		pthread_join(thread, NULL);
 		run_delay = get_run_delay() - run_delay;