qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] VFIO-VGA Issue


From: Alex Williamson
Subject: Re: [Qemu-devel] VFIO-VGA Issue
Date: Sun, 19 May 2013 21:10:22 -0600

On Fri, 2013-05-17 at 12:23 +0200, Paolo Bonzini wrote:
> Il 16/05/2013 22:46, Maik Broemme ha scritto:
> > 
> > Regarding 2) it results in 100 messages like the following on the console
> > which runs qemu:
> > 
> > qemu-system-x86_64: vfio_vga_read(,0x3c3, 1) failed: Interrupted system call
> > qemu-system-x86_64: vfio_vga_read(,0x3c3, 1) failed: Interrupted system call
> > qemu-system-x86_64: vfio_vga_read(,0x3c3, 1) failed: Interrupted system call
> 
> This is because VFIO is not looping around pread errors (or short
> reads).  The masking of signals is slightly different between TCG and
> KVM, and VFIO code runs with signals unmasked when KVM is disabled.

I didn't know that, I'll add some retries.  Thanks,

Alex




reply via email to

[Prev in Thread] Current Thread [Next in Thread]