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

Pull KVM updates from Paolo Bonzini:
 "ARM:

   - More progress on the protected VM front, now with the full fixed
     feature set as well as the limitation of some hypercalls after
     initialisation.

   - Cleanup of the RAZ/WI sysreg handling, which was pointlessly
     complicated

   - Fixes for the vgic placement in the IPA space, together with a
     bunch of selftests

   - More memcg accounting of the memory allocated on behalf of a guest

   - Timer and vgic selftests

   - Workarounds for the Apple M1 broken vgic implementation

   - KConfig cleanups

   - New kvmarm.mode=none option, for those who really dislike us

  RISC-V:

   - New KVM port.

  x86:

   - New API to control TSC offset from userspace

   - TSC scaling for nested hypervisors on SVM

   - Switch masterclock protection from raw_spin_lock to seqcount

   - Clean up function prototypes in the page fault code and avoid
     repeated memslot lookups

   - Convey the exit reason to userspace on emulation failure

   - Configure time between NX page recovery iterations

   - Expose Predictive Store Forwarding Disable CPUID leaf

   - Allocate page tracking data structures lazily (if the i915 KVM-GT
     functionality is not compiled in)

   - Cleanups, fixes and optimizations for the shadow MMU code

  s390:

   - SIGP Fixes

   - initial preparations for lazy destroy of secure VMs

   - storage key improvements/fixes

   - Log the guest CPNC

  Starting from this release, KVM-PPC patches will come from Michael
  Ellerman's PPC tree"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
  RISC-V: KVM: fix boolreturn.cocci warnings
  RISC-V: KVM: remove unneeded semicolon
  RISC-V: KVM: Fix GPA passed to __kvm_riscv_hfence_gvma_xyz() functions
  RISC-V: KVM: Factor-out FP virtualization into separate sources
  KVM: s390: add debug statement for diag 318 CPNC data
  KVM: s390: pv: properly handle page flags for protected guests
  KVM: s390: Fix handle_sske page fault handling
  KVM: x86: SGX must obey the KVM_INTERNAL_ERROR_EMULATION protocol
  KVM: x86: On emulation failure, convey the exit reason, etc. to userspace
  KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info
  KVM: x86: Clarify the kvm_run.emulation_failure structure layout
  KVM: s390: Add a routine for setting userspace CPU state
  KVM: s390: Simplify SIGP Set Arch handling
  KVM: s390: pv: avoid stalls when making pages secure
  KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
  KVM: s390: pv: avoid double free of sida page
  KVM: s390: pv: add macros for UVC CC values
  s390/mm: optimize reset_guest_reference_bit()
  s390/mm: optimize set_guest_storage_key()
  s390/mm: no need for pte_alloc_map_lock() if we know the pmd is present
  ...

1 files changed, 34 insertions, 22 deletions

diff --git a/tools/testing/selftests/kvm/memslot_perf_test.c b/tools/testing/selftests/kvm/memslot_perf_test.c
index d6e381e01db7..1727f75e0c2c 100644
--- a/tools/testing/selftests/kvm/memslot_perf_test.c
+++ b/tools/testing/selftests/kvm/memslot_perf_test.c
@@ -127,43 +127,54 @@ static bool verbose;
 			pr_info(__VA_ARGS__);	\
 	} while (0)
 
+static void check_mmio_access(struct vm_data *vm, struct kvm_run *run)
+{
+	TEST_ASSERT(vm->mmio_ok, "Unexpected mmio exit");
+	TEST_ASSERT(run->mmio.is_write, "Unexpected mmio read");
+	TEST_ASSERT(run->mmio.len == 8,
+		    "Unexpected exit mmio size = %u", run->mmio.len);
+	TEST_ASSERT(run->mmio.phys_addr >= vm->mmio_gpa_min &&
+		    run->mmio.phys_addr <= vm->mmio_gpa_max,
+		    "Unexpected exit mmio address = 0x%llx",
+		    run->mmio.phys_addr);
+}
+
 static void *vcpu_worker(void *data)
 {
 	struct vm_data *vm = data;
 	struct kvm_run *run;
 	struct ucall uc;
-	uint64_t cmd;
 
 	run = vcpu_state(vm->vm, VCPU_ID);
 	while (1) {
 		vcpu_run(vm->vm, VCPU_ID);
 
-		if (run->exit_reason == KVM_EXIT_IO) {
-			cmd = get_ucall(vm->vm, VCPU_ID, &uc);
-			if (cmd != UCALL_SYNC)
-				break;
-
+		switch (get_ucall(vm->vm, VCPU_ID, &uc)) {
+		case UCALL_SYNC:
+			TEST_ASSERT(uc.args[1] == 0,
+				"Unexpected sync ucall, got %lx",
+				(ulong)uc.args[1]);
 			sem_post(&vcpu_ready);
 			continue;
-		}
-
-		if (run->exit_reason != KVM_EXIT_MMIO)
+		case UCALL_NONE:
+			if (run->exit_reason == KVM_EXIT_MMIO)
+				check_mmio_access(vm, run);
+			else
+				goto done;
 			break;
-
-		TEST_ASSERT(vm->mmio_ok, "Unexpected mmio exit");
-		TEST_ASSERT(run->mmio.is_write, "Unexpected mmio read");
-		TEST_ASSERT(run->mmio.len == 8,
-			    "Unexpected exit mmio size = %u", run->mmio.len);
-		TEST_ASSERT(run->mmio.phys_addr >= vm->mmio_gpa_min &&
-			    run->mmio.phys_addr <= vm->mmio_gpa_max,
-			    "Unexpected exit mmio address = 0x%llx",
-			    run->mmio.phys_addr);
+		case UCALL_ABORT:
+			TEST_FAIL("%s at %s:%ld, val = %lu",
+					(const char *)uc.args[0],
+					__FILE__, uc.args[1], uc.args[2]);
+			break;
+		case UCALL_DONE:
+			goto done;
+		default:
+			TEST_FAIL("Unknown ucall %lu", uc.cmd);
+		}
 	}
 
-	if (run->exit_reason == KVM_EXIT_IO && cmd == UCALL_ABORT)
-		TEST_FAIL("%s at %s:%ld, val = %lu", (const char *)uc.args[0],
-			  __FILE__, uc.args[1], uc.args[2]);
-
+done:
 	return NULL;
 }
 
@@ -268,6 +279,7 @@ static bool prepare_vm(struct vm_data *data, int nslots, uint64_t *maxslots,
 	TEST_ASSERT(data->hva_slots, "malloc() fail");
 
 	data->vm = vm_create_default(VCPU_ID, mempages, guest_code);
+	ucall_init(data->vm, NULL);
 
 	pr_info_v("Adding slots 1..%i, each slot with %"PRIu64" pages + %"PRIu64" extra pages last\n",
 		max_mem_slots - 1, data->pages_per_slot, rempages);