James Hogan ce2eb12c58 MIPS: Fix KVM guest fixmap address ...

commit 8e748c8d09 upstream.

KVM guest kernels for trap & emulate run in user mode, with a modified
set of kernel memory segments. However the fixmap address is still in
the normal KSeg3 region at 0xfffe0000 regardless, causing problems when
cache alias handling makes use of them when handling copy on write.

Therefore define FIXADDR_TOP as 0x7ffe0000 in the guest kernel mapped
region when CONFIG_KVM_GUEST is defined.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9887/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-07-10 10:40:22 -07:00

..

asm

MIPS: Fix KVM guest fixmap address

2015-07-10 10:40:22 -07:00

uapi/asm

Merge branch 'fixes' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2013-06-11 11:16:43 -07:00