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Add page mask MACRO

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Add 'CPU_PAGE_MASK' used for calculate address,
Change IA32E_REF_MASK from 0x7ffffffffffff000 to 0x000ffffffffff000
for MMU/EPT entry, bit62:52(ignore) bit63(VE/XD)
if we want to obtain the address from the MMU/EPT entry,need to clear
bit63:52 by IA32E_REF_MASK

Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
This commit is contained in:
Mingqiang Chi
2018-03-16 14:09:40 +08:00
committed by Jack Ren
parent 2efcbe3ab8
commit 35f5eef658
3 changed files with 6 additions and 5 deletions
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4
hypervisor/arch/x86/mmu.c
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@@ -640,7 +640,7 @@ void obtain_last_page_table_entry(struct map_params *map_params,
}
/* Obtain page table entry from PD table*/
table_addr = (void *)(table_entry&IA32E_REF_MASK);
table_addr = (void *)(table_entry & IA32E_REF_MASK);
table_entry = get_table_entry(map_params, addr,
table_addr, IA32E_PD);
table_present = check_page_table_present(map_params, table_entry);
@@ -667,7 +667,7 @@ void obtain_last_page_table_entry(struct map_params *map_params,
}
/* Obtain page table entry from PT table*/
table_addr = (void *)(table_entry&IA32E_REF_MASK);
table_addr = (void *)(table_entry & IA32E_REF_MASK);
table_entry = get_table_entry(map_params, addr,
table_addr, IA32E_PT);
table_present = check_page_table_present(map_params, table_entry);