Re: [PATCH 11/11] KVM: SVM: Optimize nested svm msrpm merging

[Joerg Roedel]

On Wed, Feb 24, 2010 at 08:27:50PM +0100, Alexander Graf wrote:
> > +	static const u32 msrpm_offsets[] = {
> > +		0x0000002c, /* SYSENTER_CS */
> > +
> > +		0x00000038, /* LASTBRANCHFROMIP
> > +			       LASTBRANCHTOIP
> > +			       LASTINTFROMIP
> > +			       LASTINTTOIP */
> > +
> > +		0x00000820, /* STAR
> > +			       LSTAR
> > +			       CSTAR
> > +			       SYSCALL_MASK */
> > +
> > +		0x00000840, /* FS_BASE
> > +			       GS_BASE
> > +			       KERNEL_GS_BASE */
> > +
> > +		0xffffffff, /* End of List */
> 
> Isn't there such a list around somewhere already? We really should
> only keep this list once throughout the whole code. If necessary, just
> create the list on the fly when bits get set in the msrpm.

No, the list is hardcoded in 3 functions (as parameter of
set_msr_interception). I think about a variant to do this with a single
list. Probably I create a list of MSRs and check in
set_msr_interceptionm for it.

	Joerg


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/