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hv: add APIs to allow updating EPT mem type

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- Add PAGING_REQUEST_TYPE_MODIFY_MT memory map request type
- Update map_mem_region() to allow modifying the memory type related
  fields in a page table entry
- Add ept_update_mt()
- add modify_mem_mt() for both EPT and MMU

Signed-off-by: Zide Chen <zide.chen@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zide Chen
2018-06-06 09:13:33 -07:00
committed by lijinxia
parent b435c74e91
commit 5d2ab4d9ef
3 changed files with 72 additions and 0 deletions
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8
hypervisor/include/arch/x86/mmu.h
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@@ -28,6 +28,7 @@
#define IA32E_EPT_WT (4<<3)
#define IA32E_EPT_WP (5<<3)
#define IA32E_EPT_WB (6<<3)
#define IA32E_EPT_MT_MASK (7<<3)
#define IA32E_EPT_PAT_IGNORE 0x0000000000000040
#define IA32E_EPT_ACCESS_FLAG 0x0000000000000100
#define IA32E_EPT_DIRTY_FLAG 0x0000000000000200
@@ -216,6 +217,9 @@
/* Selects PAT7 WP */
#define MMU_MEM_ATTR_TYPE_WRITE_PROTECTED \
(IA32E_PDPTE_PAT_BIT | IA32E_COMM_PCD_BIT | IA32E_COMM_PWT_BIT)
/* memory type bits mask */
#define MMU_MEM_ATTR_TYPE_MASK \
(IA32E_PDPTE_PAT_BIT | IA32E_COMM_PCD_BIT | IA32E_COMM_PWT_BIT)
#define ROUND_PAGE_UP(addr) (((addr) + CPU_PAGE_SIZE - 1) & CPU_PAGE_MASK)
#define ROUND_PAGE_DOWN(addr) ((addr) & CPU_PAGE_MASK)
@@ -302,6 +306,8 @@ int unmap_mem(struct map_params *map_params, void *paddr, void *vaddr,
uint64_t size, uint32_t flags);
int modify_mem(struct map_params *map_params, void *paddr, void *vaddr,
uint64_t size, uint32_t flags);
int modify_mem_mt(struct map_params *map_params, void *paddr, void *vaddr,
uint64_t size, uint32_t flags);
int check_vmx_mmu_cap(void);
int allocate_vpid(void);
void flush_vpid_single(int vpid);
@@ -375,6 +381,8 @@ uint64_t _gpa2hpa(struct vm *vm, uint64_t gpa, uint32_t *size);
uint64_t hpa2gpa(struct vm *vm, uint64_t hpa);
int ept_mmap(struct vm *vm, uint64_t hpa,
uint64_t gpa, uint64_t size, uint32_t type, uint32_t prot);
int ept_update_mt(struct vm *vm, uint64_t hpa,
uint64_t gpa, uint64_t size, uint32_t prot);
int ept_violation_vmexit_handler(struct vcpu *vcpu);
int ept_misconfig_vmexit_handler(struct vcpu *vcpu);