This patch adds support to get free page blocks from a free page list.
The physical addresses of the blocks are stored to the arrays passed
from the caller. The obtained free page blocks are hints about free pages,
because there is no guarantee that they are still on the free page list
after the
This patch series is separated from the previous "Virtio-balloon
Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT,
implemented by this series enables the virtio-balloon driver to report
hints of guest free pages to the host. It can be used to accelerate live
migration of
Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the
support of reporting hints of guest free pages to host via virtio-balloon.
Host requests the guest to report free page hints by sending a new cmd id
to the guest via the free_page_report_cmd_id configuration register.
As
In some usages, e.g. virtio-balloon, a kernel module needs to know if
page poisoning is in use. This patch exposes the page_poisoning_enabled
function to kernel modules.
Signed-off-by: Wei Wang
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Michael S. Tsirkin
Acked-by: Andrew Morton
---
The VIRTIO_BALLOON_F_PAGE_POISON feature bit is used to indicate if the
guest is using page poisoning. Guest writes to the poison_val config
field to tell host about the page poisoning value that is in use.
Suggested-by: Michael S. Tsirkin
Signed-off-by: Wei Wang
Cc: Michael S. Tsirkin
Cc:
On 6/22/2018 5:17 PM, Siwei Liu wrote:
On Fri, Jun 22, 2018 at 4:40 PM, Siwei Liu wrote:
On Fri, Jun 22, 2018 at 3:25 PM, Michael S. Tsirkin wrote:
On Fri, Jun 22, 2018 at 02:51:11PM -0700, Siwei Liu wrote:
On Fri, Jun 22, 2018 at 2:29 PM, Michael S. Tsirkin wrote:
On Fri, Jun 22, 2018 at
On 22/06/18 01:55, Michael S. Tsirkin wrote:
>> +#define VIRTIO_IOMMU_RESV_MEM_T_RESERVED0
>> +#define VIRTIO_IOMMU_RESV_MEM_T_MSI 1
>> +
>> +struct virtio_iommu_probe_resv_mem {
>> +__u8subtype;
>> +__u8
On 22/06/18 01:51, Michael S. Tsirkin wrote:
>> +VIRTIO IOMMU DRIVER
>> +M: Jean-Philippe Brucker
>> +S: Maintained
>> +F: drivers/iommu/virtio-iommu.c
>> +F: include/uapi/linux/virtio_iommu.h
>> +
>> VIRTUAL BOX GUEST DEVICE DRIVER
>> M: Hans de Goede
>> M: Arnd Bergmann
>
> Please
On Sat, Jun 16, 2018 at 08:08:53AM +0900, Linus Torvalds wrote:
> On Fri, Jun 15, 2018 at 2:08 PM Wei Wang wrote:
> >
> > This patch adds a function to get free pages blocks from a free page
> > list. The obtained free page blocks are hints about free pages, because
> > there is no guarantee that
if PIE is enabled, switch the paravirt assembly constraints to be
compatible. The %c/i constrains generate smaller code so is kept by
default.
Position Independent Executable (PIE) support will allow to extend the
KASLR randomization range 0x8000.
Signed-off-by: Thomas Garnier
---
On Mon, Jun 25, 2018 at 11:55:12AM +0200, Cornelia Huck wrote:
> On Fri, 22 Jun 2018 22:05:50 +0300
> "Michael S. Tsirkin" wrote:
>
> > On Fri, Jun 22, 2018 at 05:09:55PM +0200, Cornelia Huck wrote:
> > > On Thu, 21 Jun 2018 21:20:13 +0300
> > > "Michael S. Tsirkin" wrote:
> > >
> > > > On
Changes:
- patch v5:
- Adapt new crypto modules for PIE.
- Improve per-cpu commit message.
- Fix xen 32-bit build error with .quad.
- Remove extra code for ftrace.
- patch v4:
- Simplify early boot by removing global variables.
- Modify the mcount location script for
On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote:
> Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the
> support of reporting hints of guest free pages to host via virtio-balloon.
>
> Host requests the guest to report free page hints by sending a new cmd id
> to the
On Mon, Jun 25, 2018 at 10:54:09AM -0700, Samudrala, Sridhar wrote:
> > > > > Might not neccessarily be something wrong, but it's very limited to
> > > > > prohibit the MAC of VF from changing when enslaved by failover.
> > > > You mean guest changing MAC? I'm not sure why we prohibit that.
> > >
On Thu, Jun 21, 2018 at 08:06:51PM +0100, Jean-Philippe Brucker wrote:
> A virtio-mmio node may represent a virtio-iommu device. This is discovered
> by the virtio driver at probe time, but the DMA topology isn't
> discoverable and must be described by firmware. For DT the standard IOMMU
>
On Tue, Jun 26, 2018 at 11:46:35AM +0800, Wei Wang wrote:
> On 06/26/2018 09:37 AM, Michael S. Tsirkin wrote:
> > On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote:
> >
> > > @@ -326,17 +353,6 @@ static void stats_handle_request(struct
> > > virtio_balloon *vb)
> > >
From: Tonghao Zhang
This patch improves the guest receive performance from
host. On the handle_tx side, we poll the sock receive
queue at the same time. handle_rx do that in the same way.
For avoiding deadlock, change the code to lock the vq one
by one and use the VHOST_NET_VQ_XX as a subclass
On 06/26/2018 09:37 AM, Michael S. Tsirkin wrote:
On Mon, Jun 25, 2018 at 08:05:10PM +0800, Wei Wang wrote:
@@ -326,17 +353,6 @@ static void stats_handle_request(struct virtio_balloon *vb)
virtqueue_kick(vq);
}
-static void virtballoon_changed(struct virtio_device *vdev)
-{
-
On Fri, 22 Jun 2018 22:05:50 +0300
"Michael S. Tsirkin" wrote:
> On Fri, Jun 22, 2018 at 05:09:55PM +0200, Cornelia Huck wrote:
> > On Thu, 21 Jun 2018 21:20:13 +0300
> > "Michael S. Tsirkin" wrote:
> >
> > > On Thu, Jun 21, 2018 at 04:59:13PM +0200, Cornelia Huck wrote:
> > > > OK, so
This saves one insn byte per instance, summing up to a savings of over
4k in my (stripped down) configuration. No variant of to be patched in
replacement code relies on the one byte larger size.
Signed-off-by: Jan Beulich
---
arch/x86/include/asm/paravirt_types.h |6 ++
1 file changed,
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