* [Qemu-devel] [6947] target-ppc: Explain why the whole TLB is flushed on SR write
@ 2009-03-29 13:36 Aurelien Jarno
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From: Aurelien Jarno @ 2009-03-29 13:36 UTC (permalink / raw)
To: qemu-devel
Revision: 6947
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6947
Author: aurel32
Date: 2009-03-29 13:36:32 +0000 (Sun, 29 Mar 2009)
Log Message:
-----------
target-ppc: Explain why the whole TLB is flushed on SR write
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/target-ppc/helper.c
Modified: trunk/target-ppc/helper.c
===================================================================
--- trunk/target-ppc/helper.c 2009-03-29 10:50:43 UTC (rev 6946)
+++ trunk/target-ppc/helper.c 2009-03-29 13:36:32 UTC (rev 6947)
@@ -2009,6 +2009,8 @@
#endif
if (env->sr[srnum] != value) {
env->sr[srnum] = value;
+/* Invalidating 256MB of virtual memory in 4kB pages is way longer than
+ flusing the whole TLB. */
#if !defined(FLUSH_ALL_TLBS) && 0
{
target_ulong page, end;
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2009-03-29 13:36 [Qemu-devel] [6947] target-ppc: Explain why the whole TLB is flushed on SR write Aurelien Jarno
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