RE: [Xen-ia64-devel] [PATCH] Fix vmx_vcpu_thash()

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

Hi,

In guest Linux and Windows using short format VHPT,
there is no performance degradation for this patch.
So I wish it to be applied. 
(and besides my machine's PAL is 8.09)

Even on latest PAL, the following patch is needed.
     if(vpta.vf){
         pval = ia64_call_vsa(PAL_VPS_THASH, vadr, vrr.rrval,
                              vpta.val, 0, 0, 0, 0);
-        pval = vpta.val & ~0xffff;
     }else{
         vhpt_offset=((vadr>>vrr.ps)<<3)&((1UL<<(vpta.size))-1);
         pval = (vadr & VRN_MASK) |

Thanks,
Kouya

Alex Williamson writes:
 > On Fri, 2007-06-08 at 15:23 +0800, Xu, Anthony wrote:
 > > Hi all,
 > > 
 > > This bug has been fixed by PAL9.08.
 > > You need to update PAL to 9.08.
 > 
 >   So is this patch needed?  We can't expect everyone to have the very
 > latest PAL and 9.08 is quite new.  I think something around PAL 7.31 was
 > what was available when Montecito shipped, so that probably needs to be
 > our baseline for hvm issues even though it doesn't have the VT-i
 > performance optimizations.  Thanks,
 > 
 >      Alex
 > 
 > -- 
 > Alex Williamson                             HP Open Source & Linux Org.

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