diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2024-02-21 12:35:11 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-02-26 12:58:35 +0100 |
| commit | 4f8b6cf25f5c119b117cb2a4bacb604a6cd00ff1 (patch) | |
| tree | a3e424df37fef10b2bd94593b765940399b0a284 | |
| parent | b0fe5fb6095be0f68b570c4cf4cd86b7e70c2e38 (diff) | |
x86/boot/64: Use RIP_REL_REF() to access '__supported_pte_mask'
'__supported_pte_mask' is accessed from code that executes from a 1:1
mapping so it cannot use a plain access from C. Replace the use of
fixup_pointer() with RIP_REL_REF(), which is better and simpler.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240221113506.2565718-22-ardb+git@google.com
| -rw-r--r-- | arch/x86/kernel/head64.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 2ac904110f6a..e2573ddae32f 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -177,7 +177,6 @@ unsigned long __head __startup_64(unsigned long physaddr, p4dval_t *p4d; pudval_t *pud; pmdval_t *pmd, pmd_entry; - pteval_t *mask_ptr; bool la57; int i; @@ -259,8 +258,7 @@ unsigned long __head __startup_64(unsigned long physaddr, pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; /* Filter out unsupported __PAGE_KERNEL_* bits: */ - mask_ptr = fixup_pointer(&__supported_pte_mask, physaddr); - pmd_entry &= *mask_ptr; + pmd_entry &= RIP_REL_REF(__supported_pte_mask); pmd_entry += sme_get_me_mask(); pmd_entry += physaddr; |