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From: Dave Young <dyoung@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-efi@vger.kernel.org, x86@kernel.org, mjg59@srcf.ucam.org,
	hpa@zytor.com, James.Bottomley@HansenPartnership.com,
	vgoyal@redhat.com, ebiederm@xmission.com, horms@verge.net.au,
	kexec@lists.infradead.org, bp@alien8.de, greg@kroah.com,
	matt@console-pimps.org, toshi.kani@hp.com,
	akpm@linux-foundation.org, mingo@kernel.org, msalter@redhat.com,
	leif.lindholm@linaro.org
Subject: [PATCH v6 05/14] efi: reserve boot service fix
Date: Mon, 16 Dec 2013 17:30:26 +0800	[thread overview]
Message-ID: <1387186235-15972-6-git-send-email-dyoung@redhat.com> (raw)
In-Reply-To: <1387186235-15972-1-git-send-email-dyoung@redhat.com>

Current code check boot service region with kernel text region by:
start+size >= __pa_symbol(_text)
The end of the above region should be start + size - 1 instead.

I see this problem in ovmf + Fedora 19 grub boot:
text start: 1000000 md start: 800000 md size: 800000

Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Toshi Kani <toshi.kani@hp.com>
---
 arch/x86/platform/efi/efi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index ef471d5..8a88c68 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -438,7 +438,7 @@ void __init efi_reserve_boot_services(void)
 		 * - Not within any part of the kernel
 		 * - Not the bios reserved area
 		*/
-		if ((start+size >= __pa_symbol(_text)
+		if ((start + size > __pa_symbol(_text)
 				&& start <= __pa_symbol(_end)) ||
 			!e820_all_mapped(start, start+size, E820_RAM) ||
 			memblock_is_region_reserved(start, size)) {
-- 
1.8.3.1

  parent reply	other threads:[~2013-12-16  9:30 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-16  9:30 [PATCH v6 00/14] kexec kernel efi runtime support Dave Young
2013-12-16  9:30 ` [PATCH v6 01/14] x86/mm: sparse warning fix for early_memremap Dave Young
2013-12-16  9:30 ` [PATCH v6 02/14] efi: Use early_memremap and early_memunmap to fix sparse warnings Dave Young
2013-12-16  9:30 ` [PATCH v6 03/14] efi: remove unused variables in __map_region Dave Young
2013-12-16  9:30 ` [PATCH v6 04/14] efi: add a wrapper function efi_map_region_fixed Dave Young
2013-12-16  9:30 ` Dave Young [this message]
2013-12-16  9:30 ` [PATCH v6 08/14] efi: export efi runtime memory mapping to sysfs Dave Young
     [not found]   ` <1387186235-15972-9-git-send-email-dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-16 15:09     ` Matt Fleming
     [not found]       ` <20131216150929.GA3873-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-12-17  6:13         ` Dave Young
2013-12-17  8:00     ` [PATCH v7 " Dave Young
     [not found] ` <1387186235-15972-1-git-send-email-dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-16  9:30   ` [PATCH v6 06/14] efi: cleanup efi_enter_virtual_mode function Dave Young
2013-12-16  9:30   ` [PATCH v6 07/14] efi: export more efi table variable to sysfs Dave Young
2013-12-16  9:30   ` [PATCH v6 09/14] efi: passing kexec necessary efi data via setup_data Dave Young
     [not found]     ` <1387186235-15972-10-git-send-email-dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-17  8:01       ` [PATCH v7 " Dave Young
     [not found]         ` <20131217080140.GB12621-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-12-17  8:08           ` Dave Young
2013-12-16  9:30   ` [PATCH v6 10/14] efi: only print saved efi runtime maps instead of all memmap ranges for kexec Dave Young
     [not found]     ` <1387186235-15972-11-git-send-email-dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-19 16:41       ` Matt Fleming
     [not found]         ` <20131219164144.GG3145-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-12-20  1:35           ` Dave Young
     [not found]             ` <20131220013508.GA3795-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-12-20  1:57               ` Dave Young
2013-12-16  9:30   ` [PATCH v6 11/14] x86: add xloadflags bit for efi runtime support on kexec Dave Young
2013-12-16  9:30   ` [PATCH v6 12/14] x86: export x86 boot_params to sysfs Dave Young
2013-12-16  9:30   ` [PATCH v6 13/14] x86: reserve setup_data ranges late after parsing memmap cmdline Dave Young
2013-12-16  9:30   ` [PATCH v6 14/14] x86: kdebugfs do not use __va for getting setup_data virt addr Dave Young
     [not found]     ` <1387186235-15972-15-git-send-email-dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-12-16 16:35       ` Matt Fleming
     [not found]         ` <20131216163501.GB3873-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-12-17  6:24           ` Dave Young
     [not found]             ` <20131217062417.GE6751-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-12-17  6:53               ` Dave Young
     [not found]                 ` <20131217065346.GG6751-je1gSBvt1TcFLmT5oZ11vB/sF2h8X+2i0E9HWUfgJXw@public.gmane.org>
2013-12-17 11:24                   ` Matt Fleming
     [not found]                     ` <20131217112452.GA3145-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-12-18  9:29                       ` Dave Young

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