Jes Sorensen wrote: > Zhang, Xiantao wrote: >>> From 6b731c15afa8cec84f16408c421c286f1dd1b7d3 Mon Sep 17 00:00:00 >>> 2001 >> From: Xiantao Zhang <xiantao.zhang@xxxxxxxxx> >> Date: Wed, 12 Mar 2008 13:45:40 +0800 >> Subject: [PATCH] KVM:IA64 : Add TLB virtulization support. >> >> vtlb.c includes tlb/VHPT virtulization. >> Signed-off-by: Anthony Xu <anthony.xu@xxxxxxxxx> >> Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx> > > Hi Xiantao, > > Just a clarification question on this one: > > >> +void machine_tlb_purge(u64 va, u64 ps) >> +{ >> + ia64_ptcl(va, ps << 2); >> +} > > What is the purpose of machine_tlb_purge()? Is it supposed to do a > global purge of the tlb on the host machine? If so, how does this > macro differ from platform_global_tlb_purge()? Hi, Jes Not for global purge, and just for purge local processsor's TLB entry covered by the parameters :-) Xiantao > I am mentioning this because it's very important to keep in mind that > the regular tlb purging instructions are not functional on all ia64 > platforms, which is why we have special implementations via the > machine vector interface. If global puge, we indeed need to consider the machine vectore. -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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