From: Sai Praneeth <[email protected]> Since the previous patch added support for efi_mm, let's handle efi_pgd through efi_mm and remove global variable efi_pgd.
Signed-off-by: Sai Praneeth Prakhya <[email protected]> Cc: Lee, Chun-Yi <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Tony Luck <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Michael S. Tsirkin <[email protected]> Cc: Bhupesh Sharma <[email protected]> Cc: Ricardo Neri <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Ravi Shankar <[email protected]> Tested-by: Bhupesh Sharma <[email protected]> --- arch/x86/platform/efi/efi_64.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index ccf5239923e8..6b541bdbda5f 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -189,8 +189,6 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd) early_code_mapping_set_exec(0); } -static pgd_t *efi_pgd; - /* * We need our own copy of the higher levels of the page tables * because we want to avoid inserting EFI region mappings (EFI_VA_END @@ -199,7 +197,7 @@ static pgd_t *efi_pgd; */ int __init efi_alloc_page_tables(void) { - pgd_t *pgd; + pgd_t *pgd, *efi_pgd; p4d_t *p4d; pud_t *pud; gfp_t gfp_mask; @@ -227,6 +225,7 @@ int __init efi_alloc_page_tables(void) return -ENOMEM; } + efi_mm.pgd = efi_pgd; mm_init_cpumask(&efi_mm); init_new_context(NULL, &efi_mm); @@ -242,6 +241,7 @@ void efi_sync_low_kernel_mappings(void) pgd_t *pgd_k, *pgd_efi; p4d_t *p4d_k, *p4d_efi; pud_t *pud_k, *pud_efi; + pgd_t *efi_pgd = efi_mm.pgd; if (efi_enabled(EFI_OLD_MEMMAP)) return; @@ -335,7 +335,7 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) unsigned long pfn, text, pf; struct page *page; unsigned npages; - pgd_t *pgd; + pgd_t *pgd = efi_mm.pgd; if (efi_enabled(EFI_OLD_MEMMAP)) return 0; @@ -345,8 +345,7 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) * this value is loaded into cr3 the PGD will be decrypted during * the pagetable walk. */ - efi_scratch.efi_pgt = (pgd_t *)__sme_pa(efi_pgd); - pgd = efi_pgd; + efi_scratch.efi_pgt = (pgd_t *)__sme_pa(pgd); /* * It can happen that the physical address of new_memmap lands in memory @@ -416,7 +415,7 @@ static void __init __map_region(efi_memory_desc_t *md, u64 va) { unsigned long flags = _PAGE_RW; unsigned long pfn; - pgd_t *pgd = efi_pgd; + pgd_t *pgd = efi_mm.pgd; if (!(md->attribute & EFI_MEMORY_WB)) flags |= _PAGE_PCD; @@ -520,7 +519,7 @@ void __init parse_efi_setup(u64 phys_addr, u32 data_len) static int __init efi_update_mappings(efi_memory_desc_t *md, unsigned long pf) { unsigned long pfn; - pgd_t *pgd = efi_pgd; + pgd_t *pgd = efi_mm.pgd; int err1, err2; /* Update the 1:1 mapping */ @@ -617,7 +616,7 @@ void __init efi_dump_pagetable(void) if (efi_enabled(EFI_OLD_MEMMAP)) ptdump_walk_pgd_level(NULL, swapper_pg_dir); else - ptdump_walk_pgd_level(NULL, efi_pgd); + ptdump_walk_pgd_level(NULL, efi_mm.pgd); #endif } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
