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[209.132.180.67]) by mx.google.com with ESMTP id v3-v6si5698094plo.32.2018.03.12.02.44.12; Mon, 12 Mar 2018 02:44:12 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-efi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=XQM8daMP; spf=pass (google.com: best guess record for domain of linux-efi-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-efi-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752422AbeCLJoK (ORCPT + 2 others); Mon, 12 Mar 2018 05:44:10 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:51559 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751543AbeCLJoJ (ORCPT ); Mon, 12 Mar 2018 05:44:09 -0400 Received: by mail-wm0-f65.google.com with SMTP id h21so15054630wmd.1 for ; Mon, 12 Mar 2018 02:44:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=a1LPf1UUraSY8M8D44wAx1U2UfTVB+UNhvxilUqi8co=; b=XQM8daMPvuJKNF9lXCjEG/asdB2LfKJiWkfYdxyCo8ftDUNBW8bhtTKEUoyhxufebg /fYORv1RZklPt5oTUnxHrfN7+IVi848yZ+7JeDI4nZHc2vNNr/BhQvqEKEzz1KB/P0JE aaR0149Cm68YmnA38os9U+hWaWaG8Rcgibcr4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=a1LPf1UUraSY8M8D44wAx1U2UfTVB+UNhvxilUqi8co=; b=bb9bNlitwwVqgIFAUKg/7SdoGAFdNS3rdFUc7Nz0v11NSp1GEHkvZNT0XrjpOdqJVv DC5+0Dok8lq6jBYzm+OkJZxhvmgahgyxsnT3waAJKt1L3RWW7XNZy8z2Za0A87ZSHMK4 rDnuy6kWeFW/Quj5prgERQ+a4nqtfXdf6huOoRKM6kVjH3osN/HkMblKbKfwhYCRPMck 4IoaBlzMMAl0H9h6APolHk9VuOQ6iUmaetm2StpZhfnvLJoha4xwQt3Hi1Ak5T0WN3p/ 6gFkH1EuVVRep0mdeJg1DX+UySducX9VeddMgv6z1+lpWYtY7y+VxQI/o6k23UnyzOQS DohA== X-Gm-Message-State: AElRT7Gfivm0YVF3ZvjJmFV8YBUR1DxbHD98SPgPMzeclcKwZDtiD8g/ FajQ7xZWBsjYqr9P3WKfCDqbMgjkoC0= X-Received: by 10.28.14.135 with SMTP id 129mr4994360wmo.53.1520847847441; Mon, 12 Mar 2018 02:44:07 -0700 (PDT) Received: from localhost.localdomain ([105.148.128.186]) by smtp.gmail.com with ESMTPSA id d8sm3972947wmd.20.2018.03.12.02.44.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Mar 2018 02:44:06 -0700 (PDT) From: Ard Biesheuvel To: linux-efi@vger.kernel.org Cc: mingo@kernel.org, Sai Praneeth , Ard Biesheuvel Subject: [PATCH rebased 1/2] x86/efi: Replace efi_pgd with efi_mm.pgd Date: Mon, 12 Mar 2018 09:43:54 +0000 Message-Id: <20180312094355.5371-1-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.15.1 Sender: linux-efi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org From: Sai Praneeth 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 Cc: "Lee, Chun-Yi" Cc: Borislav Petkov Cc: Tony Luck Cc: Andy Lutomirski Cc: Michael S. Tsirkin Cc: Bhupesh Sharma Cc: Ricardo Neri Cc: Ravi Shankar Tested-by: Bhupesh Sharma Reviewed-by: Matt Fleming Signed-off-by: Ard Biesheuvel --- arch/x86/mm/debug_pagetables.c | 6 +++--- arch/x86/platform/efi/efi_64.c | 18 +++++++++--------- 2 files changed, 12 insertions(+), 12 deletions(-) -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/mm/debug_pagetables.c b/arch/x86/mm/debug_pagetables.c index 51a6f92da2bf..225fe2f0bfec 100644 --- a/arch/x86/mm/debug_pagetables.c +++ b/arch/x86/mm/debug_pagetables.c @@ -1,4 +1,5 @@ #include +#include #include #include #include @@ -73,13 +74,12 @@ static const struct file_operations ptdump_curusr_fops = { #endif #if defined(CONFIG_EFI) && defined(CONFIG_X86_64) -extern pgd_t *efi_pgd; static struct dentry *pe_efi; static int ptdump_show_efi(struct seq_file *m, void *v) { - if (efi_pgd) - ptdump_walk_pgd_level_debugfs(m, efi_pgd, false); + if (efi_mm.pgd) + ptdump_walk_pgd_level_debugfs(m, efi_mm.pgd, false); return 0; } diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 29425b6c98a7..29b267b8cb63 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -191,8 +191,7 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd) early_code_mapping_set_exec(0); } -pgd_t *efi_pgd; -EXPORT_SYMBOL_GPL(efi_pgd); +EXPORT_SYMBOL_GPL(efi_mm); /* * We need our own copy of the higher levels of the page tables @@ -205,7 +204,7 @@ EXPORT_SYMBOL_GPL(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; @@ -233,6 +232,7 @@ 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); @@ -248,6 +248,7 @@ 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; @@ -341,7 +342,7 @@ 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; @@ -351,8 +352,7 @@ 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 @@ -422,7 +422,7 @@ 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; @@ -526,7 +526,7 @@ 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 */ @@ -623,7 +623,7 @@ 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 }