Re: IOAPIC doesn't handle byte writes

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On 11/22/2011 03:13 PM, Julian Stecklina wrote:
> Hello,
>
> KVM emulates an IOAPIC that doesn't handle byte writes to its
> IOAPIC_REG_SELECT register, although for example the ICH10 spec[1]
> clearly states that this is an 8-bit register. See
> http://www.intel.com/content/dam/doc/datasheet/io-controller-hub-10-family-datasheet.pdf
>  Table 13-4 on page 433.
>
> The code in question is:
>
> http://git.kernel.org/?p=virt/kvm/kvm.git;a=blob;f=virt/kvm/ioapic.c;h=3eed61eb48675a63dd1f31b0095217ab6bc5f646;hb=HEAD#l323
>
> This breaks IOAPIC code in OSes that adhere to the spec.

Agree, the code is broken.

> I would file a bug, but the kernel bugzilla seems to be down at the
> moment.

Care to post a patch instead?

-- 
error compiling committee.c: too many arguments to function

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