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arm64_mmu: Do not set accessed-flag for table descriptors 

The 12:0 bits in table descriptors are RES0 and AF is the 10th bit, so
it is not valid to set it in this case.

Fix this by moving AF to the common MMU_MT_NORMAL_FLAGS field
This commit is contained in:
Ville Juven 2024-08-29 15:09:16 +03:00 committed by Xiang Xiao
parent 00c4da73b3
commit fbc796cff1
2 changed files with 3 additions and 7 deletions
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4
arch/arm64/src/common/arm64_mmu.c
View File

@ -707,10 +707,6 @@ void mmu_ln_setentry(uint32_t ptlevel, uintptr_t lnvaddr, uintptr_t paddr,
index = XLAT_TABLE_VA_IDX(vaddr, ptlevel); index = XLAT_TABLE_VA_IDX(vaddr, ptlevel);
/* Setup the page descriptor and access flag */
mmuflags |= PTE_PAGE_DESC | PTE_BLOCK_DESC_AF;
/* Save it */ /* Save it */
lntable[index] = (paddr | mmuflags); lntable[index] = (paddr | mmuflags);

6
arch/arm64/src/common/arm64_mmu.h
View File

@ -223,11 +223,11 @@
/* Flags for user page tables */ /* Flags for user page tables */
#define MMU_UPGT_FLAGS (0) #define MMU_UPGT_FLAGS (PTE_TABLE_DESC)
/* Flags for normal memory region */ /* Flags for normal memory region */
#define MMU_MT_NORMAL_FLAGS (PTE_BLOCK_DESC_INNER_SHARE | PTE_BLOCK_DESC_MEMTYPE(MT_NORMAL)) #define MMU_MT_NORMAL_FLAGS (PTE_PAGE_DESC | PTE_BLOCK_DESC_AF | PTE_BLOCK_DESC_INNER_SHARE | PTE_BLOCK_DESC_MEMTYPE(MT_NORMAL))
/* Flags for user FLASH (RX) and user RAM (RW) */ /* Flags for user FLASH (RX) and user RAM (RW) */
@ -240,7 +240,7 @@
/* Flags for kernel page tables */ /* Flags for kernel page tables */
#define MMU_KPGT_FLAGS (0) #define MMU_KPGT_FLAGS (PTE_TABLE_DESC)
/* Kernel FLASH and RAM are mapped globally */ /* Kernel FLASH and RAM are mapped globally */