On Wed, Jun 01, 2011 at 09:32:32AM -0400, Vivek Goyal wrote:
Date: Wed, 1 Jun 2011 09:32:32 -0400
From: Vivek Goyal vgo...@redhat.com
To: Zhi Yong Wu wu...@linux.vnet.ibm.com
Cc: kw...@redhat.com, stefa...@linux.vnet.ibm.com, kvm@vger.kernel.org,
guijianf...@cn.fujitsu.com,
Hi,
On Mon, 2011-05-30 at 13:09 +0800, Zhi Yong Wu wrote:
Hello, all,
I have prepared to work on a feature called Disk I/O limits for
qemu-kvm projeect.
This feature will enable the user to cap disk I/O amount performed by a
VM.It is important for some storage resources to be
On Thu, Jun 02, 2011 at 09:17:06AM +0300, Sasha Levin wrote:
Date: Thu, 02 Jun 2011 09:17:06 +0300
From: Sasha Levin levinsasha...@gmail.com
To: Zhi Yong Wu wu...@linux.vnet.ibm.com
Cc: qemu-de...@nongnu.org, kvm@vger.kernel.org, kw...@redhat.com,
aligu...@us.ibm.com,
On Thu, 2011-06-02 at 14:29 +0800, Zhi Yong Wu wrote:
On Thu, Jun 02, 2011 at 09:17:06AM +0300, Sasha Levin wrote:
Date: Thu, 02 Jun 2011 09:17:06 +0300
From: Sasha Levin levinsasha...@gmail.com
To: Zhi Yong Wu wu...@linux.vnet.ibm.com
Cc: qemu-de...@nongnu.org, kvm@vger.kernel.org,
* Sasha Levin levinsasha...@gmail.com wrote:
From: John Floren j...@jfloren.net
Add support for PS/2 keyboard system with AUX device (aka mouse).
The device works with vnc, the guest must be started with the
'--vnc' parameter for the device to be initialized.
Signed-off-by: John Floren
* Prasad Joshi prasadjoshi...@gmail.com wrote:
Summary of performance numbers
==
There is not much difference with sequential character operations are
performed, the code with caching performed better by small margin. The caching
code performance raised by 12%
On Wed, Jun 01, 2011, Jan Kiszka wrote about Re: [PATCH 31/31] nVMX:
Documentation:
Documentation/kvm/nested-vmx.txt | 251 +
This needs to go to Documentation/virtual/kvm.
Oops, I guess the rug moved under my feet while I was preparing this patch
set :-)
Avi,
On Thu, Jun 02, 2011 at 10:15:02AM +0300, Sasha Levin wrote:
Date: Thu, 02 Jun 2011 10:15:02 +0300
From: Sasha Levin levinsasha...@gmail.com
To: Zhi Yong Wu wu...@linux.vnet.ibm.com
Cc: kw...@redhat.com, aligu...@us.ibm.com, herb...@gondor.apana.org.au,
kvm@vger.kernel.org,
On Thu, Jun 2, 2011 at 8:28 AM, Ingo Molnar mi...@elte.hu wrote:
* Prasad Joshi prasadjoshi...@gmail.com wrote:
Summary of performance numbers
==
There is not much difference with sequential character operations are
performed, the code with caching performed
On Wed, 1 Jun 2011, Sasha Levin wrote:
From: John Floren j...@jfloren.net
Add support for PS/2 keyboard system with AUX device (aka mouse).
The device works with vnc, the guest must be started with the
'--vnc' parameter for the device to be initialized.
Signed-off-by: John Floren
Hi,
I have just started deploying a host doing virtualization with KVM.
The box has an Athlon 64 X2, 4 GB RAM and is running Debian squeeze
with a locally built 2.6,39 kernel and backported versions of qemu-kvm
(0.14.0) and libvirt (0.9.0) from Debian sid. The box is currently
hosting five VMs,
The nested VMX feature is supposed to fully emulate VMX for the guest. This
(theoretically) not only allows it to run its own guests, but also also
to further emulate VMX for its own guests, and allow arbitrarily deep nesting.
This patch fixes a bug (discovered by Kevin Tian) in handling a
On Wed, 1 Jun 2011, Sasha Levin wrote:
As defined in the spec, the reserved space in struct vesa_general_info
should be used to store vesa oem string an a list of possible modes.
Signed-off-by: Sasha Levin levinsasha...@gmail.com
Francis, could you test this, please? I sent you a copy of the
On Thu, 2 Jun 2011, Ingo Molnar wrote:
Since this is a PS2 keyboard and mouse driver please name it
i8042.[ch] like the kernel-side does.
that will also make it easier to find the guest-side - host-side
pair of guest-driver/host-driver files :-)
Fixed, thanks!
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* Prasad Joshi prasadjoshi...@gmail.com wrote:
I am not sure how to induce the delay you mentioned. [...]
In the simplest version just add:
if (debug__io_delay)
udelay(1000);
to the code that does a read() from the disk image. This will
introduce a 1 msec delay -
On Thu, 2011-06-02 at 11:52 +0300, Pekka Enberg wrote:
On Wed, 1 Jun 2011, Sasha Levin wrote:
From: John Floren j...@jfloren.net
Add support for PS/2 keyboard system with AUX device (aka mouse).
The device works with vnc, the guest must be started with the
'--vnc' parameter for the
On Thu, 2 Jun 2011, Sasha Levin wrote:
Strange, those are the same errors you're supposed to get when theres no
i8042 device at all.
Could you verify that hw/pckbd.c is being built? Did the makefile get
updated?
What I'm seeing here is:
[ 49.326316] i8042: PNP: No PS/2 controller found.
* Ingo Molnar mi...@elte.hu wrote:
This introduces a ~1msec delay and thus simulates IO, but the
delays are *constant* [make sure you use a high-res timers kernel],
so they do not result in nearly as much measurement noise as real
block IO does.
The IO delays will still be there, so
* Pekka Enberg penb...@kernel.org wrote:
On Thu, 2 Jun 2011, Sasha Levin wrote:
Strange, those are the same errors you're supposed to get when theres no
i8042 device at all.
Could you verify that hw/pckbd.c is being built? Did the makefile get
updated?
What I'm seeing here is:
[
On Thu, 2011-06-02 at 11:18 +0200, Ingo Molnar wrote:
* Pekka Enberg penb...@kernel.org wrote:
On Thu, 2 Jun 2011, Sasha Levin wrote:
Strange, those are the same errors you're supposed to get when theres no
i8042 device at all.
Could you verify that hw/pckbd.c is being built? Did the
On 1 June 2011 05:12, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
On Tue, May 31, 2011 at 03:55:49PM -0400, Vivek Goyal wrote:
Date: Tue, 31 May 2011 15:55:49 -0400
From: Vivek Goyal vgo...@redhat.com
To: Zhi Yong Wu wu...@linux.vnet.ibm.com
Cc: kw...@redhat.com, aligu...@us.ibm.com,
On Thu, 2011-06-02 at 12:15 +0300, Pekka Enberg wrote:
On Thu, 2 Jun 2011, Sasha Levin wrote:
Strange, those are the same errors you're supposed to get when theres no
i8042 device at all.
Could you verify that hw/pckbd.c is being built? Did the makefile get
updated?
What I'm seeing
* Pekka Enberg penb...@kernel.org wrote:
On Thu, 2011-06-02 at 11:18 +0200, Ingo Molnar wrote:
* Pekka Enberg penb...@kernel.org wrote:
On Thu, 2 Jun 2011, Sasha Levin wrote:
Strange, those are the same errors you're supposed to get when theres no
i8042 device at all.
Could
On Wed, Jun 01, 2011 at 08:45:56AM -0700, Richard Henderson wrote:
On 06/01/2011 08:35 AM, Eduard - Gabriel Munteanu wrote:
Maybe it's not nice, but you're missing the fact upcasting gives you
some type safety. With opaques you have none.
Lol. Do you understand what container_of does?
btw., i tried to match up the kernel's i8042.c with kvm's and it was
pretty hard due to arbitrary differences. The kernel knows about:
---
/*
* Status register bits.
*/
#define I8042_STR_PARITY0x80
#define I8042_STR_TIMEOUT 0x40
#define I8042_STR_AUXDATA
On Wed, Jun 01, 2011 at 08:16:44AM -0700, Richard Henderson wrote:
On 06/01/2011 07:29 AM, Avi Kivity wrote:
On 06/01/2011 05:01 PM, Richard Henderson wrote:
+err = dev-mmu-translate(dev, addr,paddr,plen, is_write);
I see you didn't take my suggestion for using an opaque
On Wed, Jun 01, 2011 at 03:24:29AM -0400, Mark Wu wrote:
Current index allocation in virtio-blk is based on a monotonically
increasing variable index. It could cause some confusion about disk
name in the case of hot-plugging disks. And it's impossible to find the
lowest available index by just
On Wed, Jun 01, 2011 at 04:25:48AM -0400, Mark Wu wrote:
On 06/01/2011 03:24 AM, Mark Wu wrote:
-if (index_to_minor(index)= 1 MINORBITS)
-return -ENOSPC;
+do {
+if (!ida_pre_get(vd_index_ida, GFP_KERNEL))
+return err;
+
There's a problem
This patch sorts the status register bits in preparation for switching over to
kernel constant names.
Cc: Ingo Molnar mi...@elte.hu
Cc: Sasha Levin levinsasha...@gmail.com
Signed-off-by: Pekka Enberg penb...@kernel.org
---
tools/kvm/hw/i8042.c |9 ++---
1 files changed, 6 insertions(+),
This patch renames the status register bit constant names to be identical with
drivers/input/serio/i8042.h. This makes code review easier.
Cc: Ingo Molnar mi...@elte.hu
Cc: Sasha Levin levinsasha...@gmail.com
Signed-off-by: Pekka Enberg penb...@kernel.org
---
tools/kvm/hw/i8042.c | 18
This patch renames the command constants in hw/i8042.c to use similar names as
in linux/i8042.h. Note: we cannot use linux/i8042.h constants directly
because they include the command and data.
Cc: Ingo Molnar mi...@elte.hu
Cc: Sasha Levin levinsasha...@gmail.com
Signed-off-by: Pekka Enberg
nice!
Acked-by: Ingo Molnar mi...@elte.hu
Thanks,
Ingo
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ok, with the shared commands it place here's some
feature-completeness comparison of the kernel driver and the
emulator:
guest driver i8042.h | hw/i8042.c emu
/*
* Status register bits
*/
#define I8042_STR_PARITY0x80 | missing
On Thu, Jun 2, 2011 at 2:19 PM, Ingo Molnar mi...@elte.hu wrote:
ok, with the shared commands it place here's some
feature-completeness comparison of the kernel driver and the
emulator:
guest driver i8042.h | hw/i8042.c emu
/*
* Status register bits
*/
oh, the keyboard driver did not work for me due to:
if (vnc) {
kbd__init(kvm);
vesa__init(kvm);
}
I don't have VNC installed - i just wanted to see whether the
keyboard gets detected.
With kbd__init() called unconditionally it works fine here:
On Thu, Jun 02, 2011 at 11:40:26AM +0930, Rusty Russell wrote:
On Wed, 1 Jun 2011 12:49:54 +0300, Michael S. Tsirkin m...@redhat.com
wrote:
In the (rare) case where new descriptors are used
while virtio_net enables vq callback for the TX vq,
virtio_net uses the number of sg entries in the
On Thu, Jun 02, 2011 at 11:41:50AM +0930, Rusty Russell wrote:
On Wed, 1 Jun 2011 12:49:46 +0300, Michael S. Tsirkin m...@redhat.com
wrote:
Add API to check ring capacity. Because of the option
to use indirect buffers, this returns the worst
case, not the normal case capacity.
Can we
On Thu, Jun 02, 2011 at 01:24:57PM +0930, Rusty Russell wrote:
On Wed, 1 Jun 2011 12:50:03 +0300, Michael S. Tsirkin m...@redhat.com
wrote:
Current code might introduce a lot of latency variation
if there are many pending bufs at the time we
attempt to transmit a new one. This is bad for
This patch fixes the following device init failure:
[0.945942] usbcore: registered new interface driver sisusb
[0.947349] i8042: PNP: No PS/2 controller found. Probing ports directly.
[0.949033] i8042: [0] 20 - i8042 (command)
[0.950370] i8042: [57] -- i8042 (timeout)
* Pekka Enberg penb...@kernel.org wrote:
static bool kbd_in(struct ioport *ioport, struct kvm *kvm, u16 port, void
*data, int size, u32 count)
{
- u32 result;
-
- if (port == I8042_COMMAND_REG) {
- result = kbd_read_status();
- ioport__write8(data,
On 06/02/2011 11:25 AM, Marc Haber wrote:
Hi,
I have just started deploying a host doing virtualization with KVM.
The box has an Athlon 64 X2, 4 GB RAM and is running Debian squeeze
with a locally built 2.6,39 kernel and backported versions of qemu-kvm
(0.14.0) and libvirt (0.9.0) from Debian
On 06/01/2011 01:51 PM, Jan Kiszka wrote:
On 2011-05-31 15:44, Marcelo Tosatti wrote:
On Sat, May 28, 2011 at 02:12:30PM +0300, Sasha Levin wrote:
Document KVM_IOEVENTFD that can be used to receive
notifications of PIO/MMIO events without triggering
an exit.
Cc: Avi
On Thu, Jun 2, 2011 at 4:40 PM, Ingo Molnar mi...@elte.hu wrote:
+ case I8042_COMMAND_REG: {
+ u8 value = kbd_read_status();
+ ioport__write8(data, value);
+ break;
+ }
+ case I8042_DATA_REG: {
+ u32 value = kbd_read_data();
+
OK, I have something very similar, but I still dislike the screw the
latency part: this path is exactly what the IBM guys seem to hit. So I
created two functions: one tries to free a constant number and another
one up to capacity. I'll post that now.
Please review this patch to see if it
From: Jan Kiszka jan.kis...@siemens.com
Neither host_irq nor the guest_msi struct are used anymore today.
Tag the former, drop the latter to avoid confusion.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
Documentation/virtual/kvm/api.txt |7 +--
1 files changed, 1 insertions(+),
On 2011-06-02 15:43, Avi Kivity wrote:
On 06/01/2011 01:51 PM, Jan Kiszka wrote:
On 2011-05-31 15:44, Marcelo Tosatti wrote:
On Sat, May 28, 2011 at 02:12:30PM +0300, Sasha Levin wrote:
Document KVM_IOEVENTFD that can be used to receive
notifications of PIO/MMIO events without
On Thu, Jun 02, 2011 at 07:47:48PM +0530, Krishna Kumar2 wrote:
OK, I have something very similar, but I still dislike the screw the
latency part: this path is exactly what the IBM guys seem to hit. So I
created two functions: one tries to free a constant number and another
one up to
* Sasha Levin (levinsasha...@gmail.com) wrote:
[...]
Mathieu,
I've started working on converting our MMIO code to use RCU rbtree.
It looks like each node contains one key, and the search functions
search for a node with a key in a specific range.
Instead, the key in interval tree nodes
Michael S. Tsirkin m...@redhat.com wrote on 06/02/2011 08:13:46 PM:
Please review this patch to see if it looks reasonable:
Hmm, since you decided to work on top of my patch,
I'd appreciate split-up fixes.
OK (that also explains your next comment).
1. Picked comments/code from MST's code
On Thu, Jun 02, 2011 at 08:56:42PM +0530, Krishna Kumar2 wrote:
Michael S. Tsirkin m...@redhat.com wrote on 06/02/2011 08:13:46 PM:
Please review this patch to see if it looks reasonable:
Hmm, since you decided to work on top of my patch,
I'd appreciate split-up fixes.
OK (that also
OK, here's a new attempt to use the new capacity api. I also added more
comments to clarify the logic. Hope this is more readable. Let me know
pls.
This is on top of the patches applied by Rusty.
Warning: untested. Posting now to give people chance to
comment on the API.
Changes from v1:
-
Current code might introduce a lot of latency variation
if there are many pending bufs at the time we
attempt to transmit a new one. This is bad for
real-time applications and can't be good for TCP either.
Free up just enough to both clean up all buffers
eventually and to be able to xmit the next
In the (rare) case where new descriptors are used
while virtio_net enables vq callback for the TX vq,
virtio_net uses the number of sg entries in the skb it frees to
calculate how many descriptors in the ring have just been made
available. But this value is an overestimate: with indirect buffers
Add API to check ring capacity. Because of the option
to use indirect buffers, this returns the worst
case, not the normal case capacity.
Signed-off-by: Michael S. Tsirkin m...@redhat.com
---
drivers/virtio/virtio_ring.c |8
include/linux/virtio.h |5 +
2 files
This reverts commit 3c1b27d5043086a485f8526353ae9fe37bfa1065.
The only user was virtio_net, and it switched to
min_capacity instead.
Signed-off-by: Michael S. Tsirkin m...@redhat.com
---
drivers/virtio/virtio_ring.c |2 +-
include/linux/virtio.h |2 +-
2 files changed, 2
On Thu, Jun 02, 2011 at 08:56:42PM +0530, Krishna Kumar2 wrote:
Return value in free_old_xmit() was wrong.
Could you check my latest RFC pls?
--
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On Thu, Jun 2, 2011 at 9:36 AM, Prasad Joshi prasadjoshi...@gmail.com wrote:
On Thu, Jun 2, 2011 at 8:28 AM, Ingo Molnar mi...@elte.hu wrote:
* Prasad Joshi prasadjoshi...@gmail.com wrote:
Summary of performance numbers
==
There is not much difference with
On Thu, Jun 02, 2011 at 06:42:35PM +0300, Michael S. Tsirkin wrote:
OK, here's a new attempt to use the new capacity api. I also added more
comments to clarify the logic. Hope this is more readable. Let me know
pls.
This is on top of the patches applied by Rusty.
Warning: untested.
On Thu, 2011-06-02 at 18:43 +0300, Michael S. Tsirkin wrote:
Current code might introduce a lot of latency variation
if there are many pending bufs at the time we
attempt to transmit a new one. This is bad for
real-time applications and can't be good for TCP either.
Free up just enough to
QCOW uses two tables level1 (L1) table and level2 (L2) table. The L1 table
points to offset of L2 table. When a QCOW image is probed, the L1 table is
cached in the memory to avoid reading it from disk on every access. This
caching improves the performance.
The similar performance improvement can
This patch adds a 'kvm debug' command that's currently an alias for
kill -USR2 `pidof kvm`
Which pauses a guest (freezes all VCPU threads).
Signed-off-by: Sasha Levin levinsasha...@gmail.com
---
tools/kvm/Makefile|1 +
tools/kvm/include/kvm/kvm-pause.h |6 ++
On Thu, Jun 02, 2011 at 04:41:30PM +0300, Avi Kivity wrote:
On 06/02/2011 11:25 AM, Marc Haber wrote:
Is there any possibility that the freezes have to do with the
unhandles (rd|wr)msr messages?
Very unlikely.
What does that mean anyway? It's looked with sufficiently high
priority to get
On Thu, Jun 2, 2011 at 11:01 PM, Prasad Joshi prasadjoshi...@gmail.com wrote:
QCOW uses two tables level1 (L1) table and level2 (L2) table. The L1 table
points to offset of L2 table. When a QCOW image is probed, the L1 table is
cached in the memory to avoid reading it from disk on every access.
On Thu, Jun 2, 2011 at 11:01 PM, Prasad Joshi prasadjoshi...@gmail.com wrote:
There is not much difference with sequential character operations are
performed, the code with caching performed better by small margin. The caching
code performance raised by 18% to 24% with sequential block output
On Thu, 2011-06-02 at 21:01 +0100, Prasad Joshi wrote:
QCOW uses two tables level1 (L1) table and level2 (L2) table. The L1 table
points to offset of L2 table. When a QCOW image is probed, the L1 table is
cached in the memory to avoid reading it from disk on every access. This
caching improves
On Thu, Jun 2, 2011 at 9:22 PM, Sasha Levin levinsasha...@gmail.com wrote:
This patch adds a 'kvm debug' command that's currently an alias for
kill -USR2 `pidof kvm`
Which pauses a guest (freezes all VCPU threads).
Signed-off-by: Sasha Levin levinsasha...@gmail.com
---
On Wed, Jun 01, 2011 at 09:07:51PM +0800, Yang, Wei Y wrote:
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
On Wed, Jun 01, 2011 at 10:54:23AM +0200, Jan Kiszka wrote:
This reverts commit cad7c5d76b30d30fc91dea049fef7340fd96ff3c.
We migrated to upstream io-thread, so this hack became obsolete.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Applied, thanks.
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On Wed, Jun 01, 2011 at 10:54:45AM +0200, Jan Kiszka wrote:
No functional changes.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
Makefile.target|3 ---
block/raw-posix.c |2 --
cutils.c |5 -
dma-helpers.c |4
On Wed, Jun 01, 2011 at 12:57:30PM +0200, Jan Kiszka wrote:
a is unused now on CONFIG_X86_32.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
arch/x86/kvm/vmx.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
Applied, thanks.
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On Thu, Jun 02, 2011 at 04:16:09PM +0200, Jan Kiszka wrote:
From: Jan Kiszka jan.kis...@siemens.com
Neither host_irq nor the guest_msi struct are used anymore today.
Tag the former, drop the latter to avoid confusion.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
On Thu, Jun 02, 2011 at 04:16:20PM +0200, Jan Kiszka wrote:
On 2011-06-02 15:43, Avi Kivity wrote:
On 06/01/2011 01:51 PM, Jan Kiszka wrote:
On 2011-05-31 15:44, Marcelo Tosatti wrote:
On Sat, May 28, 2011 at 02:12:30PM +0300, Sasha Levin wrote:
Document KVM_IOEVENTFD that can be used
On Thu, Jun 02, 2011 at 11:54:52AM +0300, Nadav Har'El wrote:
The nested VMX feature is supposed to fully emulate VMX for the guest. This
(theoretically) not only allows it to run its own guests, but also also
to further emulate VMX for its own guests, and allow arbitrarily deep nesting.
This patch removes SMEP bit from CR4_RESERVED_BITS.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/include/asm/kvm_host.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
This patch masks CPUID leaf 7 ebx against host capability word9.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 20 +++-
1 files changed, 19 insertions(+), 1
This patchset enables a new CPU feature SMEP (Supervisor Mode Execution
Protection) in KVM. SMEP prevents kernel from executing code in application.
Updated Intel SDM describes this CPU feature. The document will be published
soon.
This patchset is based on Fenghua's SMEP patch series, as
This patch adds SMEP handling when setting CR4.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/x86.c | 15 +--
1 files changed, 13 insertions(+), 2 deletions(-)
diff
This patch adds instruction fetch checking when walking guest page table.
Signed-off-by: Yang, Wei wei.y.y...@intel.com
Signed-off-by: Shan, Haitao haitao.s...@intel.com
Signed-off-by: Li, Xin xin...@intel.com
---
arch/x86/kvm/paging_tmpl.h |9 -
1 files changed, 8
Michael S. Tsirkin m...@redhat.com wrote on 06/02/2011 09:04:23 PM:
Is this where the bug was?
Return value in free_old_xmit() was wrong. I will re-do against the
mainline kernel.
Thanks,
- KK
Just noting that I'm working on that patch as well, it might
be more efficient if we
On Fri, Jun 3, 2011 at 12:19 AM, Sasha Levin levinsasha...@gmail.com wrote:
+static int cache_table(struct qcow *q, u64 *table, u64 offset)
+{
+ struct qcow_l2_cache *n;
+ struct rb_root *r = q-root;
+ struct qcow_l2_cache *lru;
+
+ n = calloc(1, sizeof(struct
This patchset contains SPE state management for e500 KVM guests, as well
as MMU enhancements (performance, userspace visibility, and support for
mapping things that aren't standard kernel-managed pages).
They are combined into one patchset because they both touch the
MSR update code.
Liu Yu (2):
From: yu liu yu@freescale.com
giveup_spe() saves the SPE state which is protected by MSR[SPE].
However, modifying SPEFSCR does not trap when MSR[SPE]=0.
And since SPEFSCR is already saved/restored in _switch(),
not all the callers want to save SPEFSCR again.
Thus, saving SPEFSCR should not
Previously, these macros hardcoded THREAD_EVR0 as the base of the save
area, relative to the base register passed. This base offset is now
passed as a separate macro parameter, allowing reuse with other SPE
save areas, such as used by KVM.
Acked-by: Kumar Gala ga...@kernel.crashing.org
This avoids races. It also means that we use the shadow TLB way,
rather than the hardware hint -- if this is a problem, we could do
a tlbsx before inserting a TLB0 entry.
Signed-off-by: Scott Wood scottw...@freescale.com
---
arch/powerpc/kvm/e500_tlb.c | 26 +-
1 files
This allows large pages to be used on guest mappings backed by things like
/dev/mem, resulting in a significant speedup when guest memory
is mapped this way (it's useful for directly-assigned MMIO, too).
This is not a substitute for hugetlbfs integration, but is useful for
configurations where
This is a shared page used for paravirtualization. It is always present
in the guest kernel's effective address space at the address indicated
by the hypercall that enables it.
The physical address specified by the hypercall is not used, as
e500 does not have real mode.
Signed-off-by: Scott
This is in line with what other architectures do, and will allow us to
map things other than ordinary, unreserved kernel pages -- such as
dedicated devices, or large contiguous reserved regions.
Signed-off-by: Scott Wood scottw...@freescale.com
---
arch/powerpc/include/asm/kvm_e500.h |2 -
Only look in the 4 entries that could possibly contain the
entry we're looking for.
Signed-off-by: Scott Wood scottw...@freescale.com
---
arch/powerpc/kvm/e500_tlb.c | 18 ++
1 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/kvm/e500_tlb.c
From: Liu Yu yu@freescale.com
Dynamically assign host PIDs to guest PIDs, splitting each guest PID into
multiple host (shadow) PIDs based on kernel/user and MSR[IS/DS]. Use
both PID0 and PID1 so that the shadow PIDs for the right mode can be
selected, that correspond both to guest TID = zero
This implements a shared-memory API for giving host userspace access to
the guest's TLB.
Signed-off-by: Scott Wood scottw...@freescale.com
---
Documentation/virtual/kvm/api.txt | 84 +++-
arch/powerpc/include/asm/kvm.h | 35 +++
arch/powerpc/include/asm/kvm_e500.h | 23 +-
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