github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-07 06:17:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

KVM: selftests: Reject GICv3 ITS with a GICv5 VGIC

Browse Source 
Check that a GICv3 ITS and a GICv5 VGIC cannot be paired, regardless
of which device is created first. Skip the check when the host does not
expose a GICv3 ITS.

Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20261020163923.1407856-3-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Sascha Bischoff 2026-10-20 17:39:23 +01:00 committed by Marc Zyngier
parent 05620a3142
commit b17eea28dc
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
tools/testing/selftests/kvm/arm64/vgic_v5.c
View File

@ -2003,8 +2003,40 @@ int test_kvm_device(u32 gic_dev_type)
return 0;
}
static void test_vgic_v3_its_with_vgic_v5(void)
{
struct kvm_vm *vm = vm_create_barebones();
int gic_fd, its_fd, ret;
if (__kvm_test_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS)) {
pr_info("No GICv3 ITS support; skipping mixed-model test.\n");
kvm_vm_free(vm);
return;
}
gic_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V5);
ret = __kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS);
TEST_ASSERT(ret < 0 && errno == ENODEV,
"GICv3 ITS created after GICv5 VGIC: ret=%d errno=%d",
ret, errno);
close(gic_fd);
kvm_vm_free(vm);
vm = vm_create_barebones();
its_fd = kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_ITS);
ret = __kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V5);
TEST_ASSERT(ret < 0 && errno == ENODEV,
"GICv5 VGIC created after GICv3 ITS: ret=%d errno=%d",
ret, errno);
close(its_fd);
kvm_vm_free(vm);
}
void run_tests(u32 gic_dev_type)
{
pr_info("Test VGICv5 and GICv3 ITS model mismatch\n");
test_vgic_v3_its_with_vgic_v5();
pr_info("Test VGICv5 address attrs\n");
test_vgic_v5_addr_attrs();