On Mon, 16 Mar 2020, Philippe Mathieu-Daudé wrote: > Xen on ARM does not use QEMU machines [*]. Disable the 'virt' > machine there to avoid odd errors such: > > CC i386-softmmu/hw/cpu/a15mpcore.o > hw/cpu/a15mpcore.c:28:10: fatal error: kvm_arm.h: No such file or directory > > [*] https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions#Use_of_qemu-system-i386_on_ARM I confirm that what's written on that wikipage is correct: Xen on ARM doesn't use QEMU for emulation, only as a PV backends provider. As such, and also because the code is a bit entangled with the x86 platform, even on ARM we are building and running qemu-system-i386 to get the PV disk and PV framebuffer. Of course, no x86 emulation is actually done. Ideally we would have a non-arch-specific machine type for the PV backends, but that doesn't exist today. In short, I think this patch is fine, at least until somebody comes around and tries to add emulation to Xen on ARM. > Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx> > --- > Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx> > Cc: Anthony Perard <anthony.perard@xxxxxxxxxx> > Cc: Paul Durrant <paul@xxxxxxx> > Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx > --- > hw/arm/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig > index 8e801cd15f..69a8e30125 100644 > --- a/hw/arm/Kconfig > +++ b/hw/arm/Kconfig > @@ -1,5 +1,6 @@ > config ARM_VIRT > bool > + depends on !XEN > default y if KVM > imply PCI_DEVICES > imply TEST_DEVICES > -- > 2.21.1 >
