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kvm: selftests: introduce and use more page size-related constants

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Clean up code that was hardcoding masks for various fields,
now that the masks are included in processor.h.

For more cleanup, define PAGE_SIZE and PAGE_MASK just like in Linux.
PAGE_SIZE in particular was defined by several tests.

Suggested-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2022-04-20 06:27:27 -04:00
parent f18b4aebe1
commit e852be8b14
8 changed files with 8 additions and 13 deletions
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2
tools/testing/selftests/kvm/include/x86_64/processor.h
View file

@ -71,6 +71,8 @@
#define PTE_NX_MASK BIT_ULL(63)
#define PAGE_SHIFT 12
#define PAGE_SIZE (1ULL << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PHYSICAL_PAGE_MASK GENMASK_ULL(51, 12)
#define PTE_GET_PFN(pte) (((pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)

12
tools/testing/selftests/kvm/lib/x86_64/processor.c
View file

@ -255,13 +255,13 @@ static uint64_t *_vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid,
struct kvm_cpuid_entry2 *entry;
struct kvm_sregs sregs;
int max_phy_addr;
/* Set the bottom 52 bits. */
uint64_t rsvd_mask = 0x000fffffffffffff;
uint64_t rsvd_mask = 0;
entry = kvm_get_supported_cpuid_index(0x80000008, 0);
max_phy_addr = entry->eax & 0x000000ff;
/* Clear the bottom bits of the reserved mask. */
rsvd_mask = (rsvd_mask >> max_phy_addr) << max_phy_addr;
/* Set the high bits in the reserved mask. */
if (max_phy_addr < 52)
rsvd_mask = GENMASK_ULL(51, max_phy_addr);
/*
* SDM vol 3, fig 4-11 "Formats of CR3 and Paging-Structure Entries
@ -271,7 +271,7 @@ static uint64_t *_vm_get_page_table_entry(struct kvm_vm *vm, int vcpuid,
*/
vcpu_sregs_get(vm, vcpuid, &sregs);
if ((sregs.efer & EFER_NX) == 0) {
rsvd_mask |= (1ull << 63);
rsvd_mask |= PTE_NX_MASK;
}
TEST_ASSERT(vm->mode == VM_MODE_PXXV48_4K, "Attempt to use "
@ -549,7 +549,7 @@ vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
if (!(pte[index[0]] & PTE_PRESENT_MASK))
goto unmapped_gva;
return (PTE_GET_PFN(pte[index[0]]) * vm->page_size) + (gva & 0xfffu);
return (PTE_GET_PFN(pte[index[0]]) * vm->page_size) + (gva & ~PAGE_MASK);
unmapped_gva:
TEST_FAIL("No mapping for vm virtual address, gva: 0x%lx", gva);

1
tools/testing/selftests/kvm/x86_64/amx_test.c
View file

@ -29,7 +29,6 @@
#define X86_FEATURE_XSAVE (1 << 26)
#define X86_FEATURE_OSXSAVE (1 << 27)
#define PAGE_SIZE (1 << 12)
#define NUM_TILES 8
#define TILE_SIZE 1024
#define XSAVE_SIZE ((NUM_TILES * TILE_SIZE) + PAGE_SIZE)

1
tools/testing/selftests/kvm/x86_64/emulator_error_test.c
View file

@ -12,7 +12,6 @@
#include "vmx.h"
#define VCPU_ID 1
#define PAGE_SIZE 4096
#define MAXPHYADDR 36
#define MEM_REGION_GVA 0x0000123456789000

2
tools/testing/selftests/kvm/x86_64/smm_test.c
View file

@ -21,8 +21,6 @@
#define VCPU_ID 1
#define PAGE_SIZE 4096
#define SMRAM_SIZE 65536
#define SMRAM_MEMSLOT ((1 << 16) | 1)
#define SMRAM_PAGES (SMRAM_SIZE / PAGE_SIZE)

1
tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c
View file

@ -32,7 +32,6 @@
#define MSR_IA32_TSC_ADJUST 0x3b
#endif
#define PAGE_SIZE 4096
#define VCPU_ID 5
#define TSC_ADJUST_VALUE (1ll << 32)

1
tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
View file

@ -23,7 +23,6 @@
#define SHINFO_REGION_GVA 0xc0000000ULL
#define SHINFO_REGION_GPA 0xc0000000ULL
#define SHINFO_REGION_SLOT 10
#define PAGE_SIZE 4096
#define DUMMY_REGION_GPA (SHINFO_REGION_GPA + (2 * PAGE_SIZE))
#define DUMMY_REGION_SLOT 11

1
tools/testing/selftests/kvm/x86_64/xen_vmcall_test.c
View file

@ -15,7 +15,6 @@
#define HCALL_REGION_GPA 0xc0000000ULL
#define HCALL_REGION_SLOT 10
#define PAGE_SIZE 4096
static struct kvm_vm *vm;