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Message-Id: <1412060896-1902-2-git-send-email-bhe@redhat.com>
Date: Tue, 30 Sep 2014 15:08:16 +0800
From: Baoquan He <bhe@...hat.com>
To: hpa@...or.com
Cc: linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
x86@...nel.org, vgoyal@...hat.com, keescook@...omium.org,
ak@...ux.intel.com, ebiederm@...ssion.com,
kexec@...ts.infradead.org, whissi@...ssi.de,
kumagai-atsushi@....nes.nec.co.jp, Baoquan He <bhe@...hat.com>
Subject: [resend Patch v3 2/2] export the kernel image size KERNEL_IMAGE_SIZE
Now kaslr makes kernel image size changable, not the fixed size 512M.
So KERNEL_IMAGE_SIZE need be exported to VMCOREINFO, otherwise makedumfile
will crash.
Signed-off-by: Baoquan He <bhe@...hat.com>
Acked-by: Kees Cook <keescook@...omium.org>
Acked-by: Vivek Goyal <vgoyal@...hat.com>
---
kernel/kexec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 2bee072..bd680d3 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -2003,6 +2003,9 @@ static int __init crash_save_vmcoreinfo_init(void)
#endif
VMCOREINFO_NUMBER(PG_head_mask);
VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE);
+#ifdef CONFIG_X86
+ VMCOREINFO_NUMBER(KERNEL_IMAGE_SIZE);
+#endif
#ifdef CONFIG_HUGETLBFS
VMCOREINFO_SYMBOL(free_huge_page);
#endif
--
1.8.5.3
--
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