Paul Mackerras <pau...@samba.org> writes: > On Tue, Jan 28, 2014 at 10:14:12PM +0530, Aneesh Kumar K.V wrote: >> We allow priv-mode update of this. The guest value is saved in fscr, >> and the value actually used is saved in shadow_fscr. shadow_fscr >> only contains values that are allowed by the host. On >> facility unavailable interrupt, if the facility is allowed by fscr >> but disabled in shadow_fscr we need to emulate the support. Currently >> all but EBB is disabled. We still don't support performance monitoring >> in PR guest. > > ... > >> + /* >> + * Save the current fscr in shadow fscr >> + */ >> + mfspr r3,SPRN_FSCR >> + PPC_STL r3, VCPU_SHADOW_FSCR(r7) > > I don't think you need to do this. What could possibly have changed > FSCR since we loaded it on the way into the guest?
The reason for facility unavailable interrupt is encoded in FSCR right ? -aneesh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
