From: <gregkh@linuxfoundation.org>
To: <james.hogan@imgtec.com>, <gleb@kernel.org>,
<gregkh@linuxfoundation.org>, <pbonzini@redhat.com>,
<ralf@linux-mips.org>
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "MIPS: KVM: Fix CACHE immediate offset sign extension" has been added to the 3.10-stable tree
Date: Tue, 01 Mar 2016 08:15:35 +0000 [thread overview]
Message-ID: <1456814525242128@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
MIPS: KVM: Fix CACHE immediate offset sign extension
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-kvm-fix-cache-immediate-offset-sign-extension.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From c5c2a3b998f1ff5a586f9d37e154070b8d550d17 Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@imgtec.com>
Date: Wed, 11 Nov 2015 14:21:19 +0000
Subject: MIPS: KVM: Fix CACHE immediate offset sign extension
From: James Hogan <james.hogan@imgtec.com>
commit c5c2a3b998f1ff5a586f9d37e154070b8d550d17 upstream.
The immediate field of the CACHE instruction is signed, so ensure that
it gets sign extended by casting it to an int16_t rather than just
masking the low 16 bits.
Fixes: e685c689f3a8 ("KVM/MIPS32: Privileged instruction/target branch emulation.")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/kvm/kvm_mips_emul.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/mips/kvm/kvm_mips_emul.c
+++ b/arch/mips/kvm/kvm_mips_emul.c
@@ -935,7 +935,7 @@ kvm_mips_emulate_cache(uint32_t inst, ui
base = (inst >> 21) & 0x1f;
op_inst = (inst >> 16) & 0x1f;
- offset = inst & 0xffff;
+ offset = (int16_t)inst;
cache = (inst >> 16) & 0x3;
op = (inst >> 18) & 0x7;
Patches currently in stable-queue which might be from james.hogan@imgtec.com are
queue-3.10/mips-kvm-fix-cache-immediate-offset-sign-extension.patch
queue-3.10/mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch
queue-3.10/mips-kvm-fix-asid-restoration-logic.patch
reply other threads:[~2016-03-01 8:15 UTC|newest]
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