Hi Dan, You are right; the low two bits of cr.itir are NOT reserved. But when tlb happens, the hardware action is, itir.ps=rr.ps itir.key=rr.rid All other fields are set to 0.
Thanks, -Anthony >-----Original Message----- >From: Magenheimer, Dan (HP Labs Fort Collins) [mailto:[EMAIL PROTECTED] >Sent: 2006?3?30? 6:01 >To: Xu, Anthony; xen-ia64-devel >Subject: RE: [Xen-ia64-devel] [PATCH] access_reflection fix > >Ah but with further examination, I see that setting >the bits to zero will avoid problems, so I agree >now that the patch is good. > >> -----Original Message----- >> From: Magenheimer, Dan (HP Labs Fort Collins) >> Sent: Wednesday, March 29, 2006 11:45 AM >> To: 'Xu, Anthony'; xen-ia64-devel >> Subject: RE: [Xen-ia64-devel] [PATCH] access_reflection fix >> >> I am reading from an old SDM so this may have changed, >> but I think the low two bits of cr.itir are NOT reserved, >> so it is not necessary to write zero to them. >> >> See SDM Vol2 3.3.5.5 >> >> > -----Original Message----- >> > From: [EMAIL PROTECTED] >> > [mailto:[EMAIL PROTECTED] On Behalf >> > Of Xu, Anthony >> > Sent: Wednesday, March 29, 2006 9:42 AM >> > To: xen-ia64-devel >> > Subject: [Xen-ia64-devel] [PATCH] access_reflection fix >> > >> > Before injecting fault to guest, VMM need to setup >> > guest itir by using guest region register. >> > But the lowest two bits of itir are reserved. VMM need >> > to reset these two bits. >> > >> > Signed-off-by: Anthony Xu <[EMAIL PROTECTED]> >> > >> > Thanks, >> > -Anthony >> > >> > >> _______________________________________________ Xen-ia64-devel mailing list [email protected] http://lists.xensource.com/xen-ia64-devel
