From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Fleming Subject: [PATCH 13/13] x86/efi: Only map kernel text for EFI mixed mode Date: Wed, 17 Feb 2016 12:36:06 +0000 Message-ID: <1455712566-16727-14-git-send-email-matt@codeblueprint.co.uk> References: <1455712566-16727-1-git-send-email-matt@codeblueprint.co.uk> Return-path: In-Reply-To: <1455712566-16727-1-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ingo Molnar , Thomas Gleixner , "H . Peter Anvin" Cc: Ard Biesheuvel , Sai Praneeth , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Borislav Petkov , Ricardo Neri , Ravi Shankar , Matt Fleming List-Id: linux-efi@vger.kernel.org From: Sai Praneeth 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. Cc: Borislav Petkov Cc: Ricardo Neri Cc: Ravi Shankar Signed-off-by: Sai Praneeth Prakhya Signed-off-by: Matt Fleming --- 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 40d2f447a9dd..49e4dd4a1f58 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; -- 2.6.2