From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Alexander Graf <agraf@suse.de>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [ 06/11] KVM: PPC: Book3S HV: Fix typo in saving DSCR
Date: Fri, 18 Oct 2013 12:53:35 -0700 [thread overview]
Message-ID: <20131018195049.502885156@linuxfoundation.org> (raw)
In-Reply-To: <20131018195049.069623827@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Mackerras <paulus@samba.org>
commit cfc860253abd73e1681696c08ea268d33285a2c4 upstream.
This fixes a typo in the code that saves the guest DSCR (Data Stream
Control Register) into the kvm_vcpu_arch struct on guest exit. The
effect of the typo was that the DSCR value was saved in the wrong place,
so changes to the DSCR by the guest didn't persist across guest exit
and entry, and some host kernel memory got corrupted.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -935,7 +935,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206)
BEGIN_FTR_SECTION
mfspr r8, SPRN_DSCR
ld r7, HSTATE_DSCR(r13)
- std r8, VCPU_DSCR(r7)
+ std r8, VCPU_DSCR(r9)
mtspr SPRN_DSCR, r7
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206)
next prev parent reply other threads:[~2013-10-18 19:53 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-18 19:53 [ 00/11] 3.4.67-stable review Greg Kroah-Hartman
2013-10-18 19:53 ` [ 01/11] ALSA: snd-usb-usx2y: remove bogus frame checks Greg Kroah-Hartman
2013-10-18 19:53 ` [ 02/11] ALSA: hda - Add fixup for ASUS N56VZ Greg Kroah-Hartman
2013-10-18 19:53 ` [ 03/11] random: run random_int_secret_init() run after all late_initcalls Greg Kroah-Hartman
2013-10-18 19:53 ` [ 04/11] vfs: allow O_PATH file descriptors for fstatfs() Greg Kroah-Hartman
2013-10-18 19:53 ` [ 05/11] ext4: fix memory leak in xattr Greg Kroah-Hartman
2013-10-21 16:37 ` Dave Jones
2013-10-18 19:53 ` Greg Kroah-Hartman [this message]
2013-10-18 19:53 ` [ 07/11] parisc: fix interruption handler to respect pagefault_disable() Greg Kroah-Hartman
2013-10-18 19:53 ` [ 08/11] watchdog: ts72xx_wdt: locking bug in ioctl Greg Kroah-Hartman
2013-10-18 19:53 ` [ 09/11] drm/radeon: fix hw contexts for SUMO2 asics Greg Kroah-Hartman
2013-10-18 19:53 ` [ 10/11] mm/mmap: check for RLIMIT_AS before unmapping Greg Kroah-Hartman
2013-10-18 19:53 ` [ 11/11] mm: do not grow the stack vma just because of an overrun on preceding vma Greg Kroah-Hartman
2013-10-18 20:49 ` [ 00/11] 3.4.67-stable review Guenter Roeck
2013-10-18 21:25 ` Greg Kroah-Hartman
2013-10-19 3:41 ` Shuah Khan
2013-10-19 4:49 ` Greg Kroah-Hartman
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