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Sun, 1 Dec 2019 01:52:52 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D3E772084D; Sun, 1 Dec 2019 01:52:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575165172; bh=0c10hH3J/1w+xf1lK+eiBuC7ekIR2yaaecK/jLL+fHY=; h=Date:From:To:Subject:From; b=ALn1Yne2i2pyrdw8vKajxOQ/EMSvoqq5EW7D/tjhWAZaJDXhAzklG9GrCrVb4ijDl sLh6HnInwzOjdabpYYpU7G5rFzU5KT1cS1Ytw46JTi+0vjzhjNexLhjQUwSuzxaT9i MVHCFWa2nmp1KEgo3aaxzLhNlW79gcrO4EOZUOgU= Date: Sat, 30 Nov 2019 17:52:49 -0800 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, alex@ghiti.fr, aou@eecs.berkeley.edu, ard.biesheuvel@linaro.org, arnd@arndb.de, aryabinin@virtuozzo.com, benh@kernel.crashing.org, borntraeger@de.ibm.com, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, dave.jiang@intel.com, davem@davemloft.net, dvyukov@google.com, glider@google.com, gor@linux.ibm.com, heiko.carstens@de.ibm.com, hpa@zytor.com, james.morse@arm.com, jhogan@kernel.org, kan.liang@linux.intel.com, linux-mm@kvack.org, linux@armlinux.org.uk, luto@kernel.org, mark.rutland@arm.com, mawilcox@microsoft.com, mingo@elte.hu, mm-commits@vger.kernel.org, mpe@ellerman.id.au, n-horiguchi@ah.jp.nec.com, palmer@sifive.com, paul.burton@mips.com, paul.walmsley@sifive.com, paulus@samba.org, peterz@infradead.org, ralf@linux-mips.org, shashim@codeaurora.org, steven.price@arm.com, tglx@linutronix.de, torvalds@linux-foundation.org, vgupta@synopsys.com, will@kernel.org, zong.li@sifive.com Subject: [patch 061/158] x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct Message-ID: <20191201015249.gZR05Wk5A%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Steven Price Subject: x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct To enable x86 to use the generic walk_page_range() function, the callers of ptdump_walk_pgd_level() need to pass an mm_struct rather than the raw pgd_t pointer. Luckily since commit 7e904a91bf60 ("efi: Use efi_mm in x86 as well as ARM") we now have an mm_struct for EFI on x86. Link: http://lkml.kernel.org/r/20191028135910.33253-17-steven.price@arm.com Signed-off-by: Steven Price Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Cc: Albert Ou Cc: Alexander Potapenko Cc: Alexandre Ghiti Cc: Andrey Ryabinin Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Dave Hansen Cc: Dave Jiang Cc: David S. Miller Cc: Dmitry Vyukov Cc: Heiko Carstens Cc: James Hogan Cc: James Morse Cc: "Liang, Kan" Cc: Mark Rutland Cc: Matthew Wilcox Cc: Michael Ellerman Cc: Naoya Horiguchi Cc: Palmer Dabbelt Cc: Paul Burton Cc: Paul Mackerras Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Ralf Baechle Cc: Russell King Cc: Shiraz Hashim Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Cc: Zong Li Signed-off-by: Andrew Morton --- arch/x86/include/asm/pgtable.h | 2 +- arch/x86/mm/dump_pagetables.c | 4 ++-- arch/x86/platform/efi/efi_32.c | 2 +- arch/x86/platform/efi/efi_64.c | 4 ++-- 4 files changed, 6 insertions(+), 6 deletions(-) --- a/arch/x86/include/asm/pgtable.h~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct +++ a/arch/x86/include/asm/pgtable.h @@ -29,7 +29,7 @@ extern pgd_t early_top_pgt[PTRS_PER_PGD]; int __init __early_make_pgtable(unsigned long address, pmdval_t pmd); -void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd); +void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm); void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool user); void ptdump_walk_pgd_level_checkwx(void); void ptdump_walk_user_pgd_level_checkwx(void); --- a/arch/x86/mm/dump_pagetables.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct +++ a/arch/x86/mm/dump_pagetables.c @@ -567,9 +567,9 @@ static void ptdump_walk_pgd_level_core(s pr_info("x86/mm: Checked W+X mappings: passed, no W+X pages found.\n"); } -void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd) +void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm) { - ptdump_walk_pgd_level_core(m, pgd, false, true); + ptdump_walk_pgd_level_core(m, mm->pgd, false, true); } void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool user) --- a/arch/x86/platform/efi/efi_32.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct +++ a/arch/x86/platform/efi/efi_32.c @@ -49,7 +49,7 @@ void efi_sync_low_kernel_mappings(void) void __init efi_dump_pagetable(void) { #ifdef CONFIG_EFI_PGT_DUMP - ptdump_walk_pgd_level(NULL, swapper_pg_dir); + ptdump_walk_pgd_level(NULL, &init_mm); #endif } --- a/arch/x86/platform/efi/efi_64.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct +++ a/arch/x86/platform/efi/efi_64.c @@ -614,9 +614,9 @@ void __init efi_dump_pagetable(void) { #ifdef CONFIG_EFI_PGT_DUMP if (efi_enabled(EFI_OLD_MEMMAP)) - ptdump_walk_pgd_level(NULL, swapper_pg_dir); + ptdump_walk_pgd_level(NULL, &init_mm); else - ptdump_walk_pgd_level(NULL, efi_mm.pgd); + ptdump_walk_pgd_level(NULL, &efi_mm); #endif }