Commit fd02029a authored by Andrew Jones's avatar Andrew Jones Committed by Paolo Bonzini
Browse files

KVM: selftests: Add aarch64 get-reg-list test 



Check for KVM_GET_REG_LIST regressions. The blessed list was
created by running on v4.15 with the --core-reg-fixup option.
The following script was also used in order to annotate system
registers with their names when possible. When new system
registers are added the names can just be added manually using
the same grep.

while read reg; do
	if [[ ! $reg =~ ARM64_SYS_REG ]]; then
		printf "\t$reg\n"
		continue
	fi
	encoding=$(echo "$reg" | sed "s/ARM64_SYS_REG(//;s/),//")
	if ! name=$(grep "$encoding" ../../../../arch/arm64/include/asm/sysreg.h); then
		printf "\t$reg\n"
		continue
	fi
	name=$(echo "$name" | sed "s/.*SYS_//;s/[\t ]*sys_reg($encoding)$//")
	printf "\t$reg\t/* $name */\n"
done < <(aarch64/get-reg-list --core-reg-fixup --list)

Signed-off-by: default avatarAndrew Jones <drjones@redhat.com>
Message-Id: <20201029201703.102716-3-drjones@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent ac4a4d6d

tools/testing/selftests/kvm/.gitignore

+1 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only

/aarch64/get-reg-list

/s390x/memop

/s390x/resets

/s390x/sync_regs_test

tools/testing/selftests/kvm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ TEST_GEN_PROGS_x86_64 += kvm_create_max_vcpus 
TEST_GEN_PROGS_x86_64 += set_memory_region_test

TEST_GEN_PROGS_x86_64 += steal_time



TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list

TEST_GEN_PROGS_aarch64 += clear_dirty_log_test

TEST_GEN_PROGS_aarch64 += demand_paging_test

TEST_GEN_PROGS_aarch64 += dirty_log_test

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

0 → 100644
+671 −0

File added.

Preview size limit exceeded, changes collapsed.

tools/testing/selftests/kvm/include/kvm_util.h

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Original line number Diff line number Diff line
@@ -152,6 +152,7 @@ void vcpu_set_guest_debug(struct kvm_vm *vm, uint32_t vcpuid, 
			  struct kvm_guest_debug *debug);

void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid,

		       struct kvm_mp_state *mp_state);

struct kvm_reg_list *vcpu_get_reg_list(struct kvm_vm *vm, uint32_t vcpuid);

void vcpu_regs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs);

void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs);

tools/testing/selftests/kvm/lib/kvm_util.c

+29 −0
Original line number Diff line number Diff line
@@ -1291,6 +1291,35 @@ void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, 
		"rc: %i errno: %i", ret, errno);

}



/*

 * VM VCPU Get Reg List

 *

 * Input Args:

 *   vm - Virtual Machine

 *   vcpuid - VCPU ID

 *

 * Output Args:

 *   None

 *

 * Return:

 *   A pointer to an allocated struct kvm_reg_list

 *

 * Get the list of guest registers which are supported for

 * KVM_GET_ONE_REG/KVM_SET_ONE_REG calls

 */

struct kvm_reg_list *vcpu_get_reg_list(struct kvm_vm *vm, uint32_t vcpuid)

{

	struct kvm_reg_list reg_list_n = { .n = 0 }, *reg_list;

	int ret;



	ret = _vcpu_ioctl(vm, vcpuid, KVM_GET_REG_LIST, &reg_list_n);

	TEST_ASSERT(ret == -1 && errno == E2BIG, "KVM_GET_REG_LIST n=0");

	reg_list = calloc(1, sizeof(*reg_list) + reg_list_n.n * sizeof(__u64));

	reg_list->n = reg_list_n.n;

	vcpu_ioctl(vm, vcpuid, KVM_GET_REG_LIST, reg_list);

	return reg_list;

}



/*

 * VM VCPU Regs Get

 *

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