From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xen.org
Cc: kexec@lists.infradead.org, Daniel Kiper <daniel.kiper@oracle.com>,
Keir Fraser <keir@xen.org>,
David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <jbeulich@suse.com>
Subject: [PATCH 8/9] x86: check kexec relocation code fits in a page
Date: Thu, 12 Sep 2013 20:49:06 +0100 [thread overview]
Message-ID: <1379015347-21653-9-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1379015347-21653-1-git-send-email-david.vrabel@citrix.com>
From: David Vrabel <david.vrabel@citrix.com>
The kexec relocation (control) code must fit in a single page so add a
link time check for this.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---
xen/arch/x86/xen.lds.S | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
index 9600cdf..078bac6 100644
--- a/xen/arch/x86/xen.lds.S
+++ b/xen/arch/x86/xen.lds.S
@@ -198,3 +198,5 @@ SECTIONS
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
}
+
+ASSERT(__kexec_reloc_size <= PAGE_SIZE, "kexec control code is too large")
--
1.7.2.5
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next prev parent reply other threads:[~2013-09-12 19:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-12 19:48 [PATCHv7 0/9] Xen: extend kexec hypercall for use with pv-ops kernels David Vrabel
2013-09-12 19:48 ` [PATCH 1/9] x86: give FIX_EFI_MPF its own fixmap entry David Vrabel
2013-09-12 19:49 ` [PATCH 2/9] kexec: add public interface for improved load/unload sub-ops David Vrabel
2013-09-13 10:26 ` Jan Beulich
2013-09-13 12:37 ` David Vrabel
2013-09-13 14:06 ` Jan Beulich
2013-09-12 19:49 ` [PATCH 3/9] kexec: add infrastructure for handling kexec images David Vrabel
2013-09-12 19:49 ` [PATCH 4/9] kexec: extend hypercall with improved load/unload ops David Vrabel
2013-09-12 19:49 ` [PATCH 5/9] xen: kexec crash image when dom0 crashes David Vrabel
2013-09-12 19:49 ` [PATCH 6/9] libxc: add hypercall buffer arrays David Vrabel
2013-09-12 19:49 ` [PATCH 7/9] libxc: add API for kexec hypercall David Vrabel
2013-09-12 19:49 ` David Vrabel [this message]
2013-09-16 12:34 ` [PATCH 8/9] x86: check kexec relocation code fits in a page Daniel Kiper
2013-09-12 19:49 ` [PATCH 9/9] MAINTAINERS: Add KEXEC maintainer David Vrabel
2013-09-16 12:37 ` Daniel Kiper
2013-09-16 13:41 ` David Vrabel
2013-09-17 1:34 ` Daniel Kiper
-- strict thread matches above, loose matches on Subject: below --
2013-11-06 14:49 [PATCHv10 0/9] Xen: extend kexec hypercall for use with pv-ops kernels David Vrabel
2013-11-06 14:49 ` [PATCH 8/9] x86: check kexec relocation code fits in a page David Vrabel
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