On 2021/2/23 7:50 下午, Xie Yongji wrote:
Add a parameter for the ioctl VDUSE_INJECT_VQ_IRQ to support
injecting virtqueue's interrupt to the specified cpu.
How userspace know which CPU is this irq for? It looks to me we need to
do it at different level.
E.g introduce some API in sys to
On 2021/2/23 7:50 下午, Xie Yongji wrote:
This patch introduces a workqueue to support injecting
virtqueue's interrupt asynchronously. This is mainly
for performance considerations which makes sure the push()
and pop() for used vring can be asynchronous.
Do you have pref numbers for this
On 2021/2/23 7:50 下午, Xie Yongji wrote:
VDUSE (vDPA Device in Userspace) is a framework to support
implementing software-emulated vDPA devices in userspace. This
document is intended to clarify the VDUSE design and usage.
Signed-off-by: Xie Yongji
---
Documentation/userspace-api/index.rst |
On 2021/2/23 7:50 下午, Xie Yongji wrote:
This VDUSE driver enables implementing vDPA devices in userspace.
Both control path and data path of vDPA devices will be able to
be handled in userspace.
In the control path, the VDUSE driver will make use of message
mechnism to forward the config
Hi Jie,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on vhost/linux-next linux/master linus/master v5.12-rc1
next-20210303]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch
> From: Jacob Pan
> Sent: Thursday, March 4, 2021 2:29 AM
>
> Hi Vivek,
>
> On Fri, 15 Jan 2021 17:43:39 +0530, Vivek Gautam
> wrote:
>
> > From: Jean-Philippe Brucker
> >
> > Add support for tlb invalidation ops that can send invalidation
> > requests to back-end virtio-iommu when stage-1
Hi Jie,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on wsa/i2c/for-next]
[also build test WARNING on vhost/linux-next linux/master linus/master
v5.12-rc1 next-20210303]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when
Hi Jie,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on vhost/linux-next linux/master linus/master v5.12-rc1
next-20210303]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch
On 2021/2/23 7:50 下午, Xie Yongji wrote:
This implements a MMU-based IOMMU driver to support mapping
kernel dma buffer into userspace. The basic idea behind it is
treating MMU (VA->PA) as IOMMU (IOVA->PA). The driver will set
up MMU mapping instead of IOMMU mapping for the DMA transfer so
that
On Fri, Jan 15, 2021 at 05:43:42PM +0530, Vivek Gautam wrote:
> Fault type information can tell about a page request fault or
> an unreceoverable fault, and further additions to fault reasons
> and the related PASID information can help in handling faults
> efficiently.
>
> Signed-off-by: Vivek
On 2021/2/23 7:50 下午, Xie Yongji wrote:
This patch introduces an attribute for vDPA device to indicate
whether virtual address can be used. If vDPA device driver set
it, vhost-vdpa bus driver will not pin user page and transfer
userspace virtual address instead of physical address during
DMA
Add an I2C bus driver for virtio para-virtualization.
The controller can be emulated by the backend driver in
any device model software by following the virtio protocol.
The device specification can be found on
https://lists.oasis-open.org/archives/virtio-comment/202101/msg8.html.
By
On 2021/3/3 17:38, Viresh Kumar wrote:
On 03-03-21, 16:46, Jie Deng wrote:
This is not a problem. My original proposal was to mirror the struct
i2c_msg.
The code you looked at was based on that.
However, the virtio TC prefer not to mirror it. They have some concerns.
For example, there is a
On Fri, Jan 15, 2021 at 05:43:40PM +0530, Vivek Gautam wrote:
[...]
> +static int viommu_setup_pgtable(struct viommu_endpoint *vdev,
> + struct viommu_domain *vdomain)
> +{
> + int ret, id;
> + u32 asid;
> + enum io_pgtable_fmt fmt;
> + struct
On Fri, Jan 15, 2021 at 05:43:35PM +0530, Vivek Gautam wrote:
> aisd_bits data is required to prepare stage-1 tables for arm-smmu-v3.
>
> Signed-off-by: Vivek Gautam
> Cc: Joerg Roedel
> Cc: Will Deacon
> Cc: Robin Murphy
> Cc: Jean-Philippe Brucker
> Cc: Eric Auger
> Cc: Alex Williamson
>
On Fri, Jan 15, 2021 at 05:43:32PM +0530, Vivek Gautam wrote:
> Te change allows different consumers of arm-smmu-v3-cd-lib to set
> their respective sync op for pasid entries.
>
> Signed-off-by: Vivek Gautam
> Cc: Joerg Roedel
> Cc: Will Deacon
> Cc: Robin Murphy
> Cc: Jean-Philippe Brucker
On Tue, Mar 02, 2021 at 11:54:02AM +0100, Arnd Bergmann wrote:
> On Tue, Mar 2, 2021 at 10:51 AM Stefan Hajnoczi wrote:
> > On Tue, Mar 02, 2021 at 10:42:06AM +0800, Jie Deng wrote:
> > > > > +/*
> > > > > + * Definitions for virtio I2C Adpter
> > > > > + *
> > > > > + * Copyright (c) 2021 Intel
On Fri, Jan 15, 2021 at 05:43:36PM +0530, Vivek Gautam wrote:
> Add info about asid_bits and additional flags to table format
> probing header.
>
> Signed-off-by: Vivek Gautam
> Cc: Joerg Roedel
> Cc: Will Deacon
> Cc: Michael S. Tsirkin
> Cc: Robin Murphy
> Cc: Jean-Philippe Brucker
> Cc:
Hi Vivek,
Thanks again for working on this. I have a few comments but it looks
sensible overall.
Regarding the overall design, I was initially assigning page directories
instead of whole PASID tables, which would simplify the driver and host
implementation. A major complication, however, is
On Fri, Jan 15, 2021 at 05:43:31PM +0530, Vivek Gautam wrote:
> Update base address information in vendor pasid table info to pass that
> to user-space for stage1 table management.
>
> Signed-off-by: Vivek Gautam
> Cc: Joerg Roedel
> Cc: Will Deacon
> Cc: Robin Murphy
> Cc: Jean-Philippe
On Fri, Jan 15, 2021 at 05:43:33PM +0530, Vivek Gautam wrote:
> From: Jean-Philippe Brucker
>
> Add required UAPI defines for probing table format for underlying
> iommu hardware. The device may provide information about hardware
> tables and additional capabilities for each device.
> This
On Wed, 3 Mar 2021 11:52:43 -0500
"Michael S. Tsirkin" wrote:
> On Wed, Mar 03, 2021 at 01:08:43PM +0100, Cornelia Huck wrote:
> > On Wed, 24 Feb 2021 10:32:00 +0100
> > Stefano Garzarella wrote:
> >
> > > On Thu, Feb 18, 2021 at 09:08:23AM +0300, Arseny Krasnov wrote:
> > >
On Wed, Mar 03, 2021 at 01:08:43PM +0100, Cornelia Huck wrote:
> On Wed, 24 Feb 2021 10:32:00 +0100
> Stefano Garzarella wrote:
>
> > On Thu, Feb 18, 2021 at 09:08:23AM +0300, Arseny Krasnov wrote:
> > >Signed-off-by: Arseny Krasnov
> > >---
> > > virtio-vsock.tex | 40
From: Joerg Roedel
Introduce a helper to check whether an exception came from the syscall
gap and use it in the SEV-ES code. Extend the check to also cover the
compatibility SYSCALL entry path.
Fixes: 315562c9af3d5 ("x86/sev-es: Adjust #VC IST Stack on entering NMI
handler")
Cc:
From: Joerg Roedel
The code in the NMI handler to adjust the #VC handler IST stack is
needed in case an NMI hits when the #VC handler is still using its IST
stack.
But the check for this condition also needs to look if the regs->sp
value is trusted, meaning it was not set by user-space. Extend
From: Joerg Roedel
The #VC handler must run atomic and can not be put to sleep. This is a
problem when it tries to fetch instruction bytes from user-space via
copy_from_user.
Introduce a insn_fetch_from_user_inatomic() helper which uses
__copy_from_user_inatomic() to safely copy the instruction
From: Joerg Roedel
Reorganize the code and improve the comments to make the function more
readable and easier to understand.
Signed-off-by: Joerg Roedel
---
arch/x86/kernel/sev-es.c | 36
1 file changed, 24 insertions(+), 12 deletions(-)
diff --git
From: Joerg Roedel
Hi,
here are a couple of fixes for 5.12 in the SEV-ES guest support code.
Patches 1-3 have in a similar form already been posted, so this is v2.
The last two patches are new an arose from me running an SEV-ES guest
with more debugging features and instrumentation enabled. I
From: Joerg Roedel
Call irqentry_nmi_enter()/irqentry_nmi_exit() in the #VC handler to
correctly track the IRQ state during its execution.
Reported-by: Andy Lutomirski
Fixes: 0786138c78e79 ("x86/sev-es: Add a Runtime #VC Exception Handler")
Cc: sta...@vger.kernel.org # v5.10+
Signed-off-by:
From: Colin Ian King
The variable ret is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
---
drivers/vhost/scsi.c | 2 +-
1
On Wed, Mar 03, 2021 at 01:08:43PM +0100, Cornelia Huck wrote:
On Wed, 24 Feb 2021 10:32:00 +0100
Stefano Garzarella wrote:
On Thu, Feb 18, 2021 at 09:08:23AM +0300, Arseny Krasnov wrote:
>Signed-off-by: Arseny Krasnov
>---
> virtio-vsock.tex | 40 +---
> 1
On Wed, 24 Feb 2021 10:32:00 +0100
Stefano Garzarella wrote:
> On Thu, Feb 18, 2021 at 09:08:23AM +0300, Arseny Krasnov wrote:
> >Signed-off-by: Arseny Krasnov
> >---
> > virtio-vsock.tex | 40 +---
> > 1 file changed, 37 insertions(+), 3 deletions(-)
> >
>
> From: Michael S. Tsirkin
> Sent: Wednesday, March 3, 2021 2:59 PM
>
> On Wed, Mar 03, 2021 at 08:33:50AM +0200, Eli Cohen wrote:
> > On Wed, Mar 03, 2021 at 05:59:50AM +0200, Parav Pandit wrote:
> > > Hi Eli,
> > >
> > > > From: Eli Cohen
> > > > Sent: Tuesday, March 2, 2021 11:09 AM
> > >
On Wed, Mar 03, 2021 at 03:59:50AM +, Parav Pandit wrote:
> Hi Eli,
>
> > From: Eli Cohen
> > Sent: Tuesday, March 2, 2021 11:09 AM
> >
> > On Mon, Mar 01, 2021 at 11:12:33AM -0500, Michael S. Tsirkin wrote:
> > > On Mon, Mar 01, 2021 at 03:19:51PM +0200, Eli Cohen wrote:
> > > > On Mon,
On Wed, Mar 03, 2021 at 08:33:50AM +0200, Eli Cohen wrote:
> On Wed, Mar 03, 2021 at 05:59:50AM +0200, Parav Pandit wrote:
> > Hi Eli,
> >
> > > From: Eli Cohen
> > > Sent: Tuesday, March 2, 2021 11:09 AM
> > >
> > > On Mon, Mar 01, 2021 at 11:12:33AM -0500, Michael S. Tsirkin wrote:
> > > > On
On 3/2/21 5:25 AM, Jason Wang wrote:
>
> On 2021/3/1 8:06 下午, Sean Mooney wrote:
>> On Mon, 2021-03-01 at 11:28 +0100, Adrian Moreno wrote:
>>> On 3/1/21 8:50 AM, Jason Wang wrote:
On 2021/3/1 3:29 下午, Parav Pandit wrote:
>> From: Jason Wang
>> Sent: Monday, March 1, 2021 9:29 AM
On 2021/3/3 15:54, Viresh Kumar wrote:
On 01-03-21, 14:41, Jie Deng wrote:
diff --git a/drivers/i2c/busses/i2c-virtio.c b/drivers/i2c/busses/i2c-virtio.c
+static int virtio_i2c_send_reqs(struct virtqueue *vq,
+ struct virtio_i2c_req *reqs,
+
On Wed, 3 Mar 2021 12:01:01 +0800
Jason Wang wrote:
> On 2021/3/2 8:08 下午, Cornelia Huck wrote:
> > On Mon, 1 Mar 2021 11:51:08 +0800
> > Jason Wang wrote:
> >
> >> On 2021/3/1 5:25 上午, Michael S. Tsirkin wrote:
> >>> On Fri, Feb 26, 2021 at 04:19:16PM +0800, Jason Wang wrote:
> On
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