Commit Graph

8 Commits

Author SHA1 Message Date
Alexander Graf
18978768d8 KVM: PPC: Allow userspace to unset the IRQ line
Userspace can tell us that it wants to trigger an interrupt. But
so far it can't tell us that it wants to stop triggering one.

So let's interpret the parameter to the ioctl that we have anyways
to tell us if we want to raise or lower the interrupt line.

Signed-off-by: Alexander Graf <agraf@suse.de>

v2 -> v3:

 - Add CAP for unset irq
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-05-17 12:16:51 +03:00
Alexander Graf
b104d06632 KVM: PPC: Enable MMIO to do 64 bits, fprs and qprs
Right now MMIO access can only happen for GPRs and is at most 32 bit wide.
That's actually enough for almost all types of hardware out there.

Unfortunately, the guest I was using used FPU writes to MMIO regions, so
it ended up writing 64 bit MMIOs using FPRs and QPRs.

So let's add code to handle those odd cases too.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-25 12:34:41 +03:00
Alexander Graf
e15a113700 powerpc/kvm: Sync guest visible MMU state
Currently userspace has no chance to find out which virtual address space we're
in and resolve addresses. While that is a big problem for migration, it's also
unpleasent when debugging, as gdb and the monitor don't work on virtual
addresses.

This patch exports enough of the MMU segment state to userspace to make
debugging work and thus also includes the groundwork for migration.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-12-08 16:02:50 +11:00
Alexander Graf
ec3c11aa5f Pass PVR in sregs
Right now sregs is unused on PPC, so we can use it for initialization
of the CPU.

KVM on BookE always virtualizes the host CPU. On Book3s we go a step further
and take the PVR from userspace that tells us what kind of CPU we are supposed
to virtualize, because we support Book3s_32 and Book3s_64 guests.

In order to get that information, we use the sregs ioctl, because we don't
want to reset the guest CPU on every normal register set.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-11-05 16:49:51 +11:00
Linus Torvalds
ba1eb95cf3 Merge branch 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86: headers cleanup - setup.h
  emu101k1.h: fix duplicate include of <linux/types.h>
  compiler-gcc4: conditionalize #error on __KERNEL__
  remove __KERNEL_STRICT_NAMES
  make netfilter use strict integer types
  make drm headers use strict integer types
  make MTD headers use strict integer types
  make most exported headers use strict integer types
  make exported headers use strict posix types
  unconditionally include asm/types.h from linux/types.h
  make linux/types.h as assembly safe
  Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h
  headers_check fix cleanup: linux/reiserfs_fs.h
  headers_check fix cleanup: linux/nubus.h
  headers_check fix cleanup: linux/coda_psdev.h
  headers_check fix: x86, setup.h
  headers_check fix: x86, prctl.h
  headers_check fix: linux/reinserfs_fs.h
  headers_check fix: linux/socket.h
  headers_check fix: linux/nubus.h
  ...

Manually fix trivial conflicts in:
	include/linux/netfilter/xt_limit.h
	include/linux/netfilter/xt_statistic.h
2009-03-26 16:11:41 -07:00
Jan Kiszka
d0bfb940ec KVM: New guest debug interface
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL
instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic
part, controlling the "main switch" and the single-step feature. The
arch specific part adds an x86 interface for intercepting both types of
debug exceptions separately and re-injecting them when the host was not
interested. Moveover, the foundation for guest debugging via debug
registers is layed.

To signal breakpoint events properly back to userland, an arch-specific
data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block
contains the PC, the debug exception, and relevant debug registers to
tell debug events properly apart.

The availability of this new interface is signaled by
KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are
provided.

Note that both SVM and VTX are supported, but only the latter was tested
yet. Based on the experience with all those VTX corner case, I would be
fairly surprised if SVM will work out of the box.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:49 +02:00
Jaswinder Singh Rajput
9f2cd967b7 headers_check fix: powerpc, kvm.h
fix the following 'make headers_check' warnings:

  usr/include/asm-powerpc/kvm.h:23: include of <linux/types.h> is preferred over <asm/types.h>
  usr/include/asm-powerpc/kvm.h:26: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
2009-02-01 11:01:28 +05:30
Stephen Rothwell
b8b572e101 powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc.  This is the result of a

mkdir arch/powerpc/include/asm
git mv include/asm-powerpc/* arch/powerpc/include/asm

Followed by a few documentation/comment fixups and a couple of places
where <asm-powepc/...> was being used explicitly.  Of the latter only
one was outside the arch code and it is a driver only built for powerpc.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-04 12:02:00 +10:00