KVM: selftests: introduce P47V64 for s390x
s390x can have up to 47bits of physical guest and 64bits of virtual
address bits. Add a new address mode to avoid errors of testcases
going beyond 47bits.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20210608123954.10991-1-borntraeger@de.ibm.com>
Fixes: ef4c9f4f65
("KVM: selftests: Fix 32-bit truncation of vm_get_max_gfn()")
Cc: stable@vger.kernel.org
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Родитель
af3511ff7f
Коммит
1bc603af73
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@ -43,6 +43,7 @@ enum vm_guest_mode {
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VM_MODE_P40V48_4K,
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VM_MODE_P40V48_64K,
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VM_MODE_PXXV48_4K, /* For 48bits VA but ANY bits PA */
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VM_MODE_P47V64_4K,
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NUM_VM_MODES,
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};
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@ -60,7 +61,7 @@ enum vm_guest_mode {
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#elif defined(__s390x__)
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#define VM_MODE_DEFAULT VM_MODE_P52V48_4K
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#define VM_MODE_DEFAULT VM_MODE_P47V64_4K
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#define MIN_PAGE_SHIFT 12U
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#define ptes_per_page(page_size) ((page_size) / 16)
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@ -175,6 +175,7 @@ const char *vm_guest_mode_string(uint32_t i)
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[VM_MODE_P40V48_4K] = "PA-bits:40, VA-bits:48, 4K pages",
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[VM_MODE_P40V48_64K] = "PA-bits:40, VA-bits:48, 64K pages",
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[VM_MODE_PXXV48_4K] = "PA-bits:ANY, VA-bits:48, 4K pages",
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[VM_MODE_P47V64_4K] = "PA-bits:47, VA-bits:64, 4K pages",
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};
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_Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES,
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"Missing new mode strings?");
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@ -192,6 +193,7 @@ const struct vm_guest_mode_params vm_guest_mode_params[] = {
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{ 40, 48, 0x1000, 12 },
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{ 40, 48, 0x10000, 16 },
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{ 0, 0, 0x1000, 12 },
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{ 47, 64, 0x1000, 12 },
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};
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_Static_assert(sizeof(vm_guest_mode_params)/sizeof(struct vm_guest_mode_params) == NUM_VM_MODES,
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"Missing new mode params?");
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@ -277,6 +279,9 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
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TEST_FAIL("VM_MODE_PXXV48_4K not supported on non-x86 platforms");
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#endif
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break;
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case VM_MODE_P47V64_4K:
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vm->pgtable_levels = 5;
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break;
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default:
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TEST_FAIL("Unknown guest mode, mode: 0x%x", mode);
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}
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