Commit-ID: 2ad510dc372c2caac9aada9ff6dd10e787616e1d Gitweb: http://git.kernel.org/tip/2ad510dc372c2caac9aada9ff6dd10e787616e1d Author: Sai Praneeth <sai.praneeth.prak...@intel.com> AuthorDate: Wed, 17 Feb 2016 12:36:06 +0000 Committer: Ingo Molnar <mi...@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.prak...@intel.com> Signed-off-by: Matt Fleming <m...@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> Cc: Borislav Petkov <b...@alien8.de> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Ravi Shankar <ravi.v.shan...@intel.com> Cc: Ricardo Neri <ricardo.n...@intel.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: linux-...@vger.kernel.org Link: http://lkml.kernel.org/r/1455712566-16727-14-git-send-email-m...@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mi...@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;
