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From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
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Date: Sun, 04 Jan 2009 15:45:18 +0000
Subject: [Qemu-devel] [6161] CRIS: Dont flush kernel protected pages when
	modifying $pid.
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Revision: 6161
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6161
Author:   edgar_igl
Date:     2009-01-04 15:45:17 +0000 (Sun, 04 Jan 2009)

Log Message:
-----------
CRIS: Dont flush kernel protected pages when modifying $pid.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

Modified Paths:
--------------
    trunk/target-cris/mmu.c

Modified: trunk/target-cris/mmu.c
===================================================================
--- trunk/target-cris/mmu.c	2009-01-04 15:42:04 UTC (rev 6160)
+++ trunk/target-cris/mmu.c	2009-01-04 15:45:17 UTC (rev 6161)
@@ -295,7 +295,7 @@
 	unsigned int idx;
 	uint32_t lo, hi;
 	uint32_t tlb_vpn;
-	int tlb_pid, tlb_g, tlb_v, tlb_k;
+	int tlb_pid, tlb_g, tlb_v;
 	unsigned int set;
 	unsigned int mmu;
 
@@ -311,11 +311,8 @@
 				tlb_pid = EXTRACT_FIELD(hi, 0, 7);
 				tlb_g  = EXTRACT_FIELD(lo, 4, 4);
 				tlb_v = EXTRACT_FIELD(lo, 3, 3);
-				tlb_k = EXTRACT_FIELD(lo, 2, 2);
 
-				/* Kernel protected areas need to be flushed
-				   as well.  */
-				if (tlb_v && !tlb_g && (tlb_pid == pid || tlb_k)) {
+				if (tlb_v && !tlb_g && (tlb_pid == pid)) {
 					vaddr = tlb_vpn << TARGET_PAGE_BITS;
 					D(fprintf(logfile,
 						  "flush pid=%x vaddr=%x\n",