# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 7e3cbc40967620fb6b89eff6d931269d21416546
# Parent 27050b1390cf74cf6fc1579c0f6bdceb6eeb3e6f
[IA64] ptc.ga for SMP-g
ptc.ga extended for SMP-g.
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
diff -r 27050b1390cf -r 7e3cbc409676 xen/arch/ia64/xen/vcpu.c
--- a/xen/arch/ia64/xen/vcpu.c Mon Mar 27 15:35:31 2006 -0700
+++ b/xen/arch/ia64/xen/vcpu.c Mon Mar 27 15:36:47 2006 -0700
@@ -1865,16 +1865,63 @@ IA64FAULT vcpu_ptc_g(VCPU *vcpu, UINT64
return IA64_ILLOP_FAULT;
}
+#if defined(CONFIG_XEN_SMP) && defined(VHPT_GLOBAL)
+struct ptc_ga_args {
+ unsigned long vadr;
+ unsigned long addr_range;
+};
+
+static void ptc_ga_remote_func (void *varg)
+{
+ struct ptc_ga_args *args = (struct ptc_ga_args *)varg;
+ vhpt_flush_address (args->vadr, args->addr_range);
+}
+#endif
+
IA64FAULT vcpu_ptc_ga(VCPU *vcpu,UINT64 vadr,UINT64 addr_range)
{
// FIXME: validate not flushing Xen addresses
// if (Xen address) return(IA64_ILLOP_FAULT);
// FIXME: ??breaks if domain PAGE_SIZE < Xen PAGE_SIZE
//printf("######## vcpu_ptc_ga(%p,%p) ##############\n",vadr,addr_range);
+
+#ifdef CONFIG_XEN_SMP
+ struct domain *d = vcpu->domain;
+ struct vcpu *v;
+ struct ptc_ga_args args;
+
+ args.vadr = vadr;
+ args.addr_range = addr_range;
+
+ /* This method is very conservative and should be optimized:
+ - maybe IPI calls can be avoided,
+ - a processor map can be built to avoid duplicate purge
+ - maybe ptc.ga can be replaced by ptc.l+invala.
+ Hopefully, it has no impact when UP.
+ */
+ for_each_vcpu (d, v) {
+ if (v != vcpu) {
+ /* Purge tc entry.
+ Can we do this directly ? Well, this is just a
+ single atomic write. */
+ vcpu_purge_tr_entry(&PSCBX(v,dtlb));
+ vcpu_purge_tr_entry(&PSCBX(v,itlb));
+#ifdef VHPT_GLOBAL
+ /* Flush VHPT on remote processors.
+ FIXME: invalidate directly the entries? */
+ smp_call_function_single
+ (v->processor, &ptc_ga_remote_func,
+ &args, 0, 1);
+#endif
+ }
+ }
+#endif
+
#ifdef VHPT_GLOBAL
vhpt_flush_address(vadr,addr_range);
#endif
ia64_global_tlb_purge(vadr,vadr+addr_range,PAGE_SHIFT);
+ /* Purge tc. */
vcpu_purge_tr_entry(&PSCBX(vcpu,dtlb));
vcpu_purge_tr_entry(&PSCBX(vcpu,itlb));
return IA64_NO_FAULT;
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