On Wed, Jun 17, 2009 at 10:06:44AM -0700, H. Peter Anvin wrote:
> Ingo Molnar wrote:
> >>
> >> +static inline int kernel_fpu_using(void)
> >> +{
> >> + if (in_interrupt() && !(read_cr0() & X86_CR0_TS))
> >> + return 1;
> >> + return 0;
> >> +}
> >> +
> >
> > Looks sane to me. Herbert, do you ack it?
Ack. Please pick it up in your tree. Thanks!
> Huang: if I recall correctly, these functions were originally designed
> to deal with the fact that VIA processors generate spurious #TS faults
> due to broken design of the Padlock instructions. The AES and PCLMUL
> instructions actually use SSE registers and so will require different
> structure.
No irq_ts_save was the one designed for the VIA, the Intel stuff
does save the FPU state.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herb...@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
