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hv: hypercall: add support to change guest page write permission

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Add hcall_change_vm_page_wp_perm to change guest one page write permission.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1
2018-07-24 10:51:54 +08:00
committed by lijinxia
parent efd5ac4814
commit 34c6862a28
4 changed files with 91 additions and 0 deletions
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12
hypervisor/include/common/hypercall.h
View File

@@ -228,6 +228,18 @@ int32_t hcall_set_vm_memory_region(struct vm *vm, uint16_t vmid, uint64_t param)
*/
int32_t hcall_set_vm_memory_regions(struct vm *vm, uint64_t param);
/**
* @brief change guest memory page write permission
*
* @param vm Pointer to VM data structure
* @param vmid ID of the VM
* @param param guest physical address. This gpa points to
* struct wp_data
*
* @return 0 on success, non-zero on error.
*/
int32_t hcall_write_protect_page(struct vm *vm, uint16_t vmid, uint64_t param);
/**
* @brief remap PCI MSI interrupt
*

20
hypervisor/include/public/acrn_hv_defs.h
View File

@@ -53,6 +53,7 @@
#define HC_VM_SET_MEMORY_REGION _HC_ID(HC_ID, HC_ID_MEM_BASE + 0x00UL)
#define HC_VM_GPA2HPA _HC_ID(HC_ID, HC_ID_MEM_BASE + 0x01UL)
#define HC_VM_SET_MEMORY_REGIONS _HC_ID(HC_ID, HC_ID_MEM_BASE + 0x02UL)
#define HC_VM_WRITE_PROTECT_PAGE _HC_ID(HC_ID, HC_ID_MEM_BASE + 0x03UL)
/* PCI assignment*/
#define HC_ID_PCI_BASE 0x50UL
@@ -109,6 +110,7 @@
struct vm_memory_region {
#define MR_ADD 0U
#define MR_DEL 2U
#define MR_MODIFY 3U
/** set memory region type: MR_ADD or MAP_DEL */
uint32_t type;
@@ -148,6 +150,24 @@ struct set_regions {
uint64_t regions_gpa;
} __attribute__((aligned(8)));
/**
* @brief Info to change guest one page write protect permission
*
* the parameter for HC_VM_WRITE_PROTECT_PAGE hypercall
*/
struct wp_data {
/** set page write protect permission.
* ture: set the wp; flase: clear the wp
*/
uint8_t set;
/** Reserved */
uint64_t pad:56;
/** the guest physical address of the page to change */
uint64_t gpa;
} __aligned(8);
/**
* Setup parameter for share buffer, used for HC_SETUP_SBUF hypercall
*/