* [Qemu-devel] [6161] CRIS: Dont flush kernel protected pages when modifying $pid.
@ 2009-01-04 15:45 Edgar E. Iglesias
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From: Edgar E. Iglesias @ 2009-01-04 15:45 UTC (permalink / raw)
To: qemu-devel
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",
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