On 2/26/25 15:12, BALATON Zoltan wrote:
On Wed, 26 Feb 2025, Cédric Le Goater wrote:
VFIO PCI never worked on PPC32 nor ARM, S390x is 64-bit, it might have
worked on i386 long ago but we have no plans to further support VFIO
on any 32-bit host platforms. Restrict to 64-bit host platforms.

Cc: Harsh Prateek Bora <hars...@linux.ibm.com>
Cc: Tony Krowiak <akrow...@linux.ibm.com>
Cc: Eric Farman <far...@linux.ibm.com>
Cc: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Cédric Le Goater <c...@redhat.com>
---
hw/vfio/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/vfio/Kconfig b/hw/vfio/Kconfig
index 
7cdba0560aa821c88d3420b36f86020575834202..6ed825429a9151fcdff33e95d1a310210689b258
 100644
--- a/hw/vfio/Kconfig
+++ b/hw/vfio/Kconfig
@@ -7,7 +7,7 @@ config VFIO_PCI
    default y
    select VFIO
    select EDID
-    depends on LINUX && PCI
+    depends on LINUX && PCI && (AARCH64 || PPC64 || X86_64 || S390X)

Are these defined for the host or target?

host.

I see PPC is defined in target/ppc/Kconfig so I think these mark the target not the host. Vfio-pci works with qemu-system-ppc

Ah ! I am surprised. Which host and QEMU machine please ?

and we are trying to use it for GPU pass through for 32 bit PPC guests. Please 
keep that enabled.

As per commit 6d701c9bac1d3571e9ad511e01b27df7237f0b13 "meson: Deprecate
32-bit host support", support will be fully removed in 2 releases and
it doesn't need to be addressed by VFIO.


Thanks,

C.




Regards,
BALATON Zoltan

config VFIO_CCW
    bool



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