Patch "MIPS: KVM: Fix CACHE immediate offset sign extension" has been added to the 4.3-stable tree
Subsystems (3)
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 4.3-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-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
c5c2a3b998f1ff5a586f9d37e154070b8d550d17Mon Sep 17 00:00:00 2001
From: James Hogan <[email protected]>
Date: Wed, 11 Nov 2015 14:21:19 +0000
Subject: MIPS: KVM: Fix CACHE immediate offset sign extension
From: James Hogan <[email protected]>
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.
--- arch/mips/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
arch/mips/kvm/emulate.c +1 -1
@@ -1581,7 +1581,7 @@ enum emulation_result kvm_mips_emulate_c 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 [email protected] are
queue-4.3/mips-kvm-fix-cache-immediate-offset-sign-extension.patch queue-4.3/mips-kvm-fix-asid-restoration-logic.patch queue-4.3/mips-cdmm-add-builtin_mips_cdmm_driver-macro.patch queue-4.3/mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch