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Commit e685c689 authored by Sanjay Lal's avatar Sanjay Lal Committed by Ralf Baechle
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KVM/MIPS32: Privileged instruction/target branch emulation. 



- The Guest kernel is run in UM and privileged instructions cause a trap.
- If the instruction causing the trap is in a branch delay slot, the branch
  needs to be emulated to figure out the PC @ which the guest will resume
  execution.

Signed-off-by: default avatarSanjay Lal <sanjayl@kymasys.com>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 9843b030

arch/mips/kvm/kvm_mips_emul.c

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+1829 −0

File added.

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arch/mips/kvm/kvm_mips_opcode.h

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Original line number Diff line number Diff line 
/*

* This file is subject to the terms and conditions of the GNU General Public

* License.  See the file "COPYING" in the main directory of this archive

* for more details.

*

* Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.

* Authors: Sanjay Lal <sanjayl@kymasys.com>

*/



/*

 * Define opcode values not defined in <asm/isnt.h>

 */



#ifndef __KVM_MIPS_OPCODE_H__

#define __KVM_MIPS_OPCODE_H__



/* COP0 Ops */

#define     mfmcz_op         0x0b	/*  01011  */

#define     wrpgpr_op        0x0e	/*  01110  */



/*  COP0 opcodes (only if COP0 and CO=1):  */

#define     wait_op               0x20	/*  100000  */



#endif /* __KVM_MIPS_OPCODE_H__ */