search for: kvmtool

On 11/18/2015 03:22 AM, Gerd Hoffmann wrote: > /me goes undust the kvmtool patches for seabios. > > (see https://www.kraxel.org/cgit/seabios/commit/?h=kvmtool, > build with CONFIG_KVMTOOL=y + CONFIG_DEBUG_LEVEL=9) > > nilsson kraxel ~# ~kraxel/projects/kvmtool/lkvm run --name seabios > --firmware /home/kraxel/projects/seabios/out-bios-kvmtool/bios.bin...

On 11/18/2015 03:22 AM, Gerd Hoffmann wrote: > /me goes undust the kvmtool patches for seabios. > > (see https://www.kraxel.org/cgit/seabios/commit/?h=kvmtool, > build with CONFIG_KVMTOOL=y + CONFIG_DEBUG_LEVEL=9) > > nilsson kraxel ~# ~kraxel/projects/kvmtool/lkvm run --name seabios > --firmware /home/kraxel/projects/seabios/out-bios-kvmtool/bios.bin...

On Thu, Feb 23, 2023 at 07:38:25PM +0000, Rob Bradford via B4 Relay wrote: > From: Rob Bradford <rbradford at rivosinc.com> > > kvmtool does not support the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature > but does advertise the VIRTIO_NET_F_GUEST_TSO{4,6} features. Check that > the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature is present before setting > the NETIF_F_GRO_HW feature bit as otherwise an attempt will be made to > pro...

On Fri, Feb 24, 2023 at 3:38 AM Rob Bradford via B4 Relay <devnull+rbradford.rivosinc.com at kernel.org> wrote: > > From: Rob Bradford <rbradford at rivosinc.com> > > kvmtool does not support the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature > but does advertise the VIRTIO_NET_F_GUEST_TSO{4,6} features. Check that > the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature is present before setting > the NETIF_F_GRO_HW feature bit as otherwise an attempt will be made to > pro...

...e: > This is a first go at adding support for the modern (based on the 1.0 virtio > spec) virtio-pci implementation. > To sum it up: this is a lightly tested version for feedback about the design > and to weed out major bugs people notice. Feedback is very welcome! /me goes undust the kvmtool patches for seabios. (see https://www.kraxel.org/cgit/seabios/commit/?h=kvmtool, build with CONFIG_KVMTOOL=y + CONFIG_DEBUG_LEVEL=9) nilsson kraxel ~# ~kraxel/projects/kvmtool/lkvm run --name seabios --firmware /home/kraxel/projects/seabios/out-bios-kvmtool/bios.bin --disk /vmdisk/cloud/persisten...

On Wed, Mar 01, 2023 at 01:59:52PM +0000, Rob Bradford via B4 Relay wrote: > From: Rob Bradford <rbradford at rivosinc.com> > > Since the following commit virtio-net on kvmtool has printed a warning > during the probe: > > commit dbcf24d153884439dad30484a0e3f02350692e4c > Author: Jason Wang <jasowang at redhat.com> > Date: Tue Aug 17 16:06:59 2021 +0800 > > virtio-net: use NETIF_F_GRO_HW instead of NETIF_F_LRO > > [ 1.865992] n...

...to > > the notification BAR, I look further tomorrow to narrow it down and fix it. > > Err, *read*, obviously. > > I've never implemented that because the kernel doesn't try to do that (it doesn't > make much sense, I think...). It doesn't make sense indeed (kvmtool still shouldn't segfault though), and on a quick look I can't spot a place in seabios doing that ... It's reading ISR, as part of device reset, to make sure any pending interrupts are cleared. cheers, Gerd

...to > > the notification BAR, I look further tomorrow to narrow it down and fix it. > > Err, *read*, obviously. > > I've never implemented that because the kernel doesn't try to do that (it doesn't > make much sense, I think...). It doesn't make sense indeed (kvmtool still shouldn't segfault though), and on a quick look I can't spot a place in seabios doing that ... It's reading ISR, as part of device reset, to make sure any pending interrupts are cleared. cheers, Gerd

...> > Not surprising, support isn't upstream, ran into a bunch of issues[1][2] > last time I tried to combine the two, ran into some issues and nobody > seemed to care, so the seabios patches where just sitting in a branch in > my repo ... > >> $ cat .config | grep 'KVMTOOL\|DEBUG' >> CONFIG_KVMTOOL=y >> CONFIG_DEBUG_LEVEL=9 > > Hmm, 'CONFIG_KVMTOOL=y > .config; make olddefconfig' should give you a > working configuration. > > Setting 'CONFIG_DEBUG_LEVEL=9' is useful for trouble-shooting as it > makes the virtio d...

...> > Not surprising, support isn't upstream, ran into a bunch of issues[1][2] > last time I tried to combine the two, ran into some issues and nobody > seemed to care, so the seabios patches where just sitting in a branch in > my repo ... > >> $ cat .config | grep 'KVMTOOL\|DEBUG' >> CONFIG_KVMTOOL=y >> CONFIG_DEBUG_LEVEL=9 > > Hmm, 'CONFIG_KVMTOOL=y > .config; make olddefconfig' should give you a > working configuration. > > Setting 'CONFIG_DEBUG_LEVEL=9' is useful for trouble-shooting as it > makes the virtio d...

Hi Jean, I am trying to run and review on my side but I see Linux patches are not with latest kernel version. Will it be possible for you to share your Linux and kvmtool git repository reference? Thanks -Bharat > -----Original Message----- > From: virtualization-bounces at lists.linux-foundation.org > [mailto:virtualization-bounces at lists.linux-foundation.org] On Behalf Of Jean- > Philippe Brucker > Sent: Saturday, April 08, 2017 12:55 AM > To...

Hi Jean, I am trying to run and review on my side but I see Linux patches are not with latest kernel version. Will it be possible for you to share your Linux and kvmtool git repository reference? Thanks -Bharat > -----Original Message----- > From: virtualization-bounces at lists.linux-foundation.org > [mailto:virtualization-bounces at lists.linux-foundation.org] On Behalf Of Jean- > Philippe Brucker > Sent: Saturday, April 08, 2017 12:55 AM > To...

...about seabios as a testing target. Not surprising, support isn't upstream, ran into a bunch of issues[1][2] last time I tried to combine the two, ran into some issues and nobody seemed to care, so the seabios patches where just sitting in a branch in my repo ... > $ cat .config | grep 'KVMTOOL\|DEBUG' > CONFIG_KVMTOOL=y > CONFIG_DEBUG_LEVEL=9 Hmm, 'CONFIG_KVMTOOL=y > .config; make olddefconfig' should give you a working configuration. Setting 'CONFIG_DEBUG_LEVEL=9' is useful for trouble-shooting as it makes the virtio drivers more verbose, but not mandatory...

...gt;>> Do you mean a legacy virtio device? I don't see why > >>> you would want to support pre-1.0 mode. > >>> If you drop that, you can drop all cpu_to_virtio things > >>> and just use __le accessors. > >> > >> I was thinking about the kvmtools which lacks 1.0 support AFAIK. > > > > Unless kvmtools wants to be left behind it has to go 1.0. > > And it also has to go ACPI. Is there any reason, apart from kvmtool, to > make a completely new virtio device, with no support in existing guests, > rather than implement...

...gt;>> Do you mean a legacy virtio device? I don't see why > >>> you would want to support pre-1.0 mode. > >>> If you drop that, you can drop all cpu_to_virtio things > >>> and just use __le accessors. > >> > >> I was thinking about the kvmtools which lacks 1.0 support AFAIK. > > > > Unless kvmtools wants to be left behind it has to go 1.0. > > And it also has to go ACPI. Is there any reason, apart from kvmtool, to > make a completely new virtio device, with no support in existing guests, > rather than implement...

...on BAR, I look further tomorrow to narrow it down and fix it. >> >> Err, *read*, obviously. >> >> I've never implemented that because the kernel doesn't try to do that (it doesn't >> make much sense, I think...). > > It doesn't make sense indeed (kvmtool still shouldn't segfault though), > and on a quick look I can't spot a place in seabios doing that ... > > It's reading ISR, as part of device reset, to make sure any pending > interrupts are cleared. That was indeed the ISR field. Fixing that makes seabios reach the same...

On 11/18/2015 11:00 PM, Sasha Levin wrote: > Anyways, I debugged it for a bit a found that seabios attempts to write to > the notification BAR, I look further tomorrow to narrow it down and fix it. Err, *read*, obviously. I've never implemented that because the kernel doesn't try to do that (it doesn't make much sense, I think...). Thanks, Sasha

On Fri, Mar 03, 2023 at 04:46:03PM -0800, Jakub Kicinski wrote: > On Thu, 2 Mar 2023 04:48:38 -0500 Michael S. Tsirkin wrote: > > > Looks not the core can try to enable and disable features according to > > > the diff between features and hw_features > > > > > > static inline netdev_features_t netdev_get_wanted_features( > > > struct

...to mount the 9p root: https://gist.github.com/anonymous/cb32986fd9b85c315ae4 And wrap qemu to create the 9p device (the mount is just there for a quick test, in reality supermin itself should probably leave the unpacker dir around): https://gist.github.com/anonymous/5cdbc18974f88d6ea9e0 Next step: kvmtool [3]. Avoids some delays introduced by legacy BIOS boot, and device probing, however lkvm currently lacks support for additional virtio-serial channels, so - although the supermin appliance would boot - guestfsd wouldn't be able to communicate with the host: https://gist.github.com/anonymous/e6...

Implement a virtio-iommu device and translate DMA traffic from vfio and virtio devices. Virtio needed some rework to support scatter-gather accesses to vring and buffers at page granularity. Patch 3 implements the actual virtio-iommu device. Adding --viommu on the command-line now inserts a virtual IOMMU in front of all virtio and vfio devices: $ lkvm run -k Image --console virtio -p