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Re: [Qemu-devel] [Qemu-block] Guest unresponsive after Virtqueue size ex

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [Qemu-block] Guest unresponsive after Virtqueue size exceeded error
Date: Fri, 22 Feb 2019 17:39:21 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 22/02/19 17:37, Dr. David Alan Gilbert wrote:
> Why does vring_avail_idx use virtio_ld*u*w_phys_cached?
> (similar for vring_avail_ring).
> There's no generically safe way to do unaligned atomic loads - don't we know
> in virtio that these are naturally aligned?

u is for unsigned. :)  We know that these are aligned and so they will
be atomic.


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