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xen-devel
Re: [Xen-devel] do_domctl and EAGAIN
On 07/04/2009 09:19, "Juergen Gross" <juergen.gross@xxxxxxxxxxxxxx> wrote:
>> Our privcmd hypercall ioctl() is non-blocking and hence I don't think can
>> return EINTR. In fact ioctl() is used in loads of places throughout our
>> toolstack and in qemu, and I don't think EINTR is checked by any caller, nor
>> is EINTR mentioned in the ioctl man page.
>
> In the non-blocking case this might be irrelevant. Are you sure this is no
> issue in any case?
Yes, our ioctls are all non-blocking (or at least, they don't interruptibly
block -- they might block due to paging, memory allocations, and the like,
but that's never visible to userspace).
-- Keir
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