Hi,
> Just a question, why didn't we choose the virtio-vga order to avoid
> shuffling from the beginning? Vga came after and we keep the
> compatibility ?
Well, transitional virtio devices need bar 0 for legacy virtio
compatibility (io bar), so using bar 1 for msix makes sense in that
case.
vi
On Wed, Apr 22, 2020 at 12:46:57PM +0200, Gerd Hoffmann wrote:
This fix exchange the modern io bar with the modern memory bar,
replacing the msix bar that is never impacted anyway.
Well, msix was placed in bar 4 intentionally. That keeps bar 1 (default
msix location) free, so we have the optio
On Wed, Apr 22, 2020 at 12:49:41PM +0200, Gerd Hoffmann wrote:
> On Wed, Apr 22, 2020 at 02:04:36AM -0400, Michael S. Tsirkin wrote:
> > On Tue, Apr 21, 2020 at 11:48:53PM +0200, Anthoine Bourgeois wrote:
> > > With virtio-vga, pci bar are reordered. Bar #2 is used for compatibility
> > > with stdv
On Wed, Apr 22, 2020 at 02:04:36AM -0400, Michael S. Tsirkin wrote:
> On Tue, Apr 21, 2020 at 11:48:53PM +0200, Anthoine Bourgeois wrote:
> > With virtio-vga, pci bar are reordered. Bar #2 is used for compatibility
> > with stdvga. By default, bar #2 is used by virtio modern io bar.
> > This bar is
> This fix exchange the modern io bar with the modern memory bar,
> replacing the msix bar that is never impacted anyway.
Well, msix was placed in bar 4 intentionally. That keeps bar 1 (default
msix location) free, so we have the option to turn bar 0 (vga compat
vram) into a 64bit bar without shu
On Tue, Apr 21, 2020 at 11:48:53PM +0200, Anthoine Bourgeois wrote:
> With virtio-vga, pci bar are reordered. Bar #2 is used for compatibility
> with stdvga. By default, bar #2 is used by virtio modern io bar.
> This bar is the last one introduce in the virtio pci bar layout and it's
> crushed by t
With virtio-vga, pci bar are reordered. Bar #2 is used for compatibility
with stdvga. By default, bar #2 is used by virtio modern io bar.
This bar is the last one introduce in the virtio pci bar layout and it's
crushed by the virtio-vga reordering. So virtio-vga and
modern-pio-notify are incompatib
