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author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-09 11:19:18 +0100 |
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committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-13 13:43:08 +0100 |
commit | 674e127ef64b07a1e6e6bcc5ecbaead50ea81134 (patch) | |
tree | 12b148e154cece8dd350a5b4f16a8569c4e1cd33 | |
parent | e93cb72e597df7b37aad7910787b8ecaeac31382 (diff) | |
download | edk2-674e127ef64b07a1e6e6bcc5ecbaead50ea81134.tar.gz edk2-674e127ef64b07a1e6e6bcc5ecbaead50ea81134.tar.bz2 edk2-674e127ef64b07a1e6e6bcc5ecbaead50ea81134.zip |
ArmPkg/ArmMmuLib: remove bogus alignment of page allocations
In commit 7d189f99d81c ("ArmPkg/Mmu: Fix bug of aligning new allocated
page table"), we fixed a flaw in the logic regarding alignment of newly
allocated translation table pages. However, we all failed to spot that
aligning page based allocations to page size is rather pointless to
begin with, so simply allocate a single page each time we add new pages
to the translation tables.
Also, drop the unnecessary cast.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
-rw-r--r-- | ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c index 84a689af7c..1ff584ec9e 100644 --- a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c +++ b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c @@ -298,7 +298,7 @@ GetBlockEntryListFromAddress ( }
// Create a new translation table
- TranslationTable = (UINT64*)AllocateAlignedPages (EFI_SIZE_TO_PAGES(TT_ENTRY_COUNT * sizeof(UINT64)), TT_ALIGNMENT_DESCRIPTION_TABLE);
+ TranslationTable = AllocatePages (1);
if (TranslationTable == NULL) {
return NULL;
}
@@ -321,7 +321,7 @@ GetBlockEntryListFromAddress ( //
// Create a new translation table
- TranslationTable = (UINT64*)AllocateAlignedPages (EFI_SIZE_TO_PAGES(TT_ENTRY_COUNT * sizeof(UINT64)), TT_ALIGNMENT_DESCRIPTION_TABLE);
+ TranslationTable = AllocatePages (1);
if (TranslationTable == NULL) {
return NULL;
}
@@ -553,7 +553,6 @@ ArmConfigureMmu ( )
{
VOID* TranslationTable;
- UINTN TranslationTablePageCount;
UINT32 TranslationTableAttribute;
ARM_MEMORY_REGION_DESCRIPTOR *MemoryTableEntry;
UINT64 MaxAddress;
@@ -640,8 +639,7 @@ ArmConfigureMmu ( ArmSetTCR (TCR);
// Allocate pages for translation table
- TranslationTablePageCount = EFI_SIZE_TO_PAGES(RootTableEntryCount * sizeof(UINT64));
- TranslationTable = (UINT64*)AllocateAlignedPages (TranslationTablePageCount, TT_ALIGNMENT_DESCRIPTION_TABLE);
+ TranslationTable = AllocatePages (1);
if (TranslationTable == NULL) {
return RETURN_OUT_OF_RESOURCES;
}
@@ -718,7 +716,7 @@ ArmConfigureMmu ( return RETURN_SUCCESS;
FREE_TRANSLATION_TABLE:
- FreePages (TranslationTable, TranslationTablePageCount);
+ FreePages (TranslationTable, 1);
return Status;
}
|