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hv: mmu: add pre-assumption for hpa2gpa

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They're: (a) only SOS would use hpa2gpa and (b) the GPA and HPA
in SOS is identical mapping.
Rename hpa2gpa to vm0_hpa2gpa then.

Tracked-On: #1124
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1 2018-10-17 19:59:36 +08:00 committed by wenlingz
parent 49b476bb56
commit 70ddca3a87
5 changed files with 16 additions and 20 deletions
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17
hypervisor/arch/x86/ept.c
View File

@ -103,19 +103,12 @@ uint64_t gpa2hpa(struct vm *vm, uint64_t gpa)
return local_gpa2hpa(vm, gpa, NULL);
}
uint64_t hpa2gpa(struct vm *vm, uint64_t hpa)
/**
* @pre: the gpa and hpa are identical mapping in SOS.
*/
uint64_t vm0_hpa2gpa(uint64_t hpa)
{
uint64_t *pgentry, pg_size = 0UL;
pgentry = lookup_address((uint64_t *)vm->arch_vm.m2p,
hpa, &pg_size, PTT_EPT);
if (pgentry == NULL) {
pr_err("VM %d hpa2gpa: failed for hpa 0x%llx",
vm->vm_id, hpa);
ASSERT(false, "hpa2gpa not found");
}
return ((*pgentry & (~(pg_size - 1UL)))
| (hpa & (pg_size - 1UL)));
return hpa;
}
int ept_violation_vmexit_handler(struct vcpu *vcpu)

3
hypervisor/arch/x86/trusty.c
View File

@ -131,7 +131,8 @@ static void create_secure_world_ept(struct vm *vm, uint64_t gpa_orig,
hpa, gpa_rebased, size, EPT_RWX | EPT_WB);
/* Get the gpa address in SOS */
gpa = hpa2gpa(vm0, hpa);
gpa = vm0_hpa2gpa(hpa);
/* Unmap trusty memory space from sos ept mapping*/
ept_mr_del(vm0, (uint64_t *)vm0->arch_vm.nworld_eptp,
gpa, size);

8
hypervisor/boot/sbl/sbl_seed_parse.c
View File

@ -140,7 +140,7 @@ bool sbl_seed_parse(struct vm *vm, char *cmdline, char *out_arg, uint32_t out_le
struct image_boot_params *boot_params;
uint32_t len;
if (cmdline == NULL) {
if (!is_vm0(vm) || (cmdline == NULL)) {
goto fail;
}
@ -165,10 +165,8 @@ bool sbl_seed_parse(struct vm *vm, char *cmdline, char *out_arg, uint32_t out_le
* Convert the addresses to SOS GPA since this structure will
* be used in SOS.
*/
boot_params->p_seed_list =
hpa2gpa(vm, boot_params->p_seed_list);
boot_params->p_platform_info =
hpa2gpa(vm, boot_params->p_platform_info);
boot_params->p_seed_list = vm0_hpa2gpa(boot_params->p_seed_list);
boot_params->p_platform_info = vm0_hpa2gpa(boot_params->p_platform_info);
/*
* Replace original arguments with spaces since SOS's GPA is not

6
hypervisor/include/arch/x86/mmu.h
View File

@ -134,6 +134,7 @@ static inline void clflush(volatile void *p)
* host physical address width is 52
*/
#define INVALID_HPA (0x1UL << 52U)
#define INVALID_GPA (0x1UL << 52U)
/* External Interfaces */
void destroy_ept(struct vm *vm);
/**
@ -146,7 +147,10 @@ uint64_t gpa2hpa(struct vm *vm, uint64_t gpa);
* @return hpa - the HPA of parameter gpa is hpa
*/
uint64_t local_gpa2hpa(struct vm *vm, uint64_t gpa, uint32_t *size);
uint64_t hpa2gpa(struct vm *vm, uint64_t hpa);
/**
* @pre: the gpa and hpa are identical mapping in SOS.
*/
uint64_t vm0_hpa2gpa(uint64_t hpa);
void ept_mr_add(struct vm *vm, uint64_t *pml4_page, uint64_t hpa,
uint64_t gpa, uint64_t size, uint64_t prot_orig);
void ept_mr_modify(struct vm *vm, uint64_t *pml4_page, uint64_t gpa,

2
hypervisor/include/hypervisor.h
View File

@ -45,7 +45,7 @@ static inline void *gpa2hva(struct vm *vm, uint64_t x)
static inline uint64_t hva2gpa(struct vm *vm, void *x)
{
return hpa2gpa(vm, hva2hpa(x));
return (is_vm0(vm)) ? vm0_hpa2gpa(hva2hpa(x)) : INVALID_GPA;
}
#endif /* !ASSEMBLER */