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Groups > linux.kernel > #1340441
| From | tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [tip:efi/core] x86/efi: Only map kernel text for EFI mixed mode |
| Date | 2016-02-23 10:20 +0100 |
| Message-ID | <r5hir-3dd-33@gated-at.bofh.it> (permalink) |
| References | <r39yG-6rV-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Commit-ID: 2ad510dc372c2caac9aada9ff6dd10e787616e1d Gitweb: http://git.kernel.org/tip/2ad510dc372c2caac9aada9ff6dd10e787616e1d Author: Sai Praneeth <sai.praneeth.prakhya@intel.com> AuthorDate: Wed, 17 Feb 2016 12:36:06 +0000 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 22 Feb 2016 08:26:28 +0100 x86/efi: Only map kernel text for EFI mixed mode The correct symbol to use when figuring out the size of the kernel text is '_etext', not '_end' which is the symbol for the entire kernel image includes data and debug sections. Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Shankar <ravi.v.shankar@intel.com> Cc: Ricardo Neri <ricardo.neri@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1455712566-16727-14-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/platform/efi/efi_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 40d2f44..49e4dd4 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -275,7 +275,7 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) efi_scratch.phys_stack = virt_to_phys(page_address(page)); efi_scratch.phys_stack += PAGE_SIZE; /* stack grows down */ - npages = (_end - _text) >> PAGE_SHIFT; + npages = (_etext - _text) >> PAGE_SHIFT; text = __pa(_text); pfn = text >> PAGE_SHIFT;
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[GIT PULL 00/13] EFI changes for v4.6 part 2 Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[PATCH 08/13] efi/arm: Check for LPAE support before booting a LPAE kernel Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/arm: Check for LPAE support before booting a LPAE kernel tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 11/13] x86/mm/pageattr: Don't implicitly allow _PAGE_RW in kernel_map_pages_in_pgd() Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] x86/mm/pat: Don't implicitly allow _PAGE_RW in kernel_map_pages_in_pgd() tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com - 2016-02-23 10:20 +0100
[PATCH 05/13] arm64: vmlinux.lds.S: Handle .init.rodata.xxx and .init.bss sections Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] arm64/vmlinux.lds.S: Handle .init.rodata.xxx and .init.bss sections tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 03/13] x86/mm/pageattr: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com - 2016-02-23 10:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-23 18:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Linus Torvalds <torvalds@linux-foundation.org> - 2016-02-23 19:10 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-23 19:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings "H. Peter Anvin" <hpa@zytor.com> - 2016-02-24 03:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings "H. Peter Anvin" <hpa@zytor.com> - 2016-02-24 03:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Ingo Molnar <mingo@kernel.org> - 2016-02-25 10:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> - 2016-02-24 02:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 03:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 15:20 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-24 17:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:40 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Linus Torvalds <torvalds@linux-foundation.org> - 2016-02-24 20:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 20:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 21:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Sylvain Chouleur <sylvain.chouleur@gmail.com> - 2016-02-29 12:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-03-02 12:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-24 20:40 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 21:00 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Ingo Molnar <mingo@kernel.org> - 2016-02-25 10:10 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-25 16:30 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Borislav Petkov <bp@alien8.de> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Andy Lutomirski <luto@amacapital.net> - 2016-02-24 17:50 +0100
Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-25 17:10 +0100
[PATCH 07/13] efi/arm-init: Use read-only early mappings Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/arm-init: Use read-only early mappings tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 06/13] efi/efistub: Prevent __init annotations from being used Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/efistub: Prevent __init annotations from being used tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:10 +0100
[PATCH 02/13] efi/runtime-wrappers: Run UEFI Runtime Services with interrupts enabled Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/runtime-wrappers: Run UEFI Runtime Services with interrupts enabled tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 13/13] x86/efi: Only map kernel text for EFI mixed mode Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] x86/efi: Only map kernel text for EFI mixed mode tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com - 2016-02-23 10:20 +0100
[PATCH 12/13] x86/efi: Map EFI_MEMORY_{XP,RO} memory region bits to EFI page tables Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] x86/efi: Map EFI_MEMORY_{XP,RO} memory region bits to EFI page tables tip-bot for Sai Praneeth <tipbot@zytor.com>@zytor.com - 2016-02-23 10:20 +0100
[PATCH 10/13] efi/arm*: Perform hardware compatibility check Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/arm*: Perform hardware compatibility check tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 09/13] efi/arm64: Check for h/w support before booting a >4 KB granule kernel Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:40 +0100
[tip:efi/core] efi/arm64: Check for h/w support before booting a >4 KB granular kernel tip-bot for Ard Biesheuvel <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
[PATCH 01/13] efi: Reformat GUID tables to follow the format in UEFI spec Matt Fleming <matt@codeblueprint.co.uk> - 2016-02-17 13:50 +0100
[tip:efi/core] efi: Reformat GUID tables to follow the format in UEFI spec tip-bot for Peter Jones <tipbot@zytor.com>@zytor.com - 2016-02-23 10:30 +0100
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