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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-04-14 22:32:04 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-04-27 13:02:14 +1000
commit1a51dde139d5305b2592c716c50c005d6ab9624b (patch)
treec3dd4bf78fb8137f8da2954cc39345c28635966c /arch/powerpc
parentca1769f7a372898f5e3dbb8e4ff53f53f0626ef4 (diff)
downloadlinaro-lsk-1a51dde139d5305b2592c716c50c005d6ab9624b.tar.gz
powerpc/book3e: Use way 3 for linear mapping bolted entry
An erratum on A2 can lead to the bolted entry we insert for the linear mapping being evicted, to avoid that write the bolted entry to way 3. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/exceptions-64e.S5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 9651acc3504..8fe0fc233f0 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -864,8 +864,9 @@ have_hes:
* that will have to be made dependent on whether we are running under
* a hypervisor I suppose.
*/
- ori r3,r3,MAS0_HES | MAS0_WQ_ALLWAYS
- mtspr SPRN_MAS0,r3
+ ori r11,r3,MAS0_WQ_ALLWAYS
+ oris r11,r11,MAS0_ESEL(3)@h /* Use way 3: workaround A2 erratum 376 */
+ mtspr SPRN_MAS0,r11
lis r3,(MAS1_VALID | MAS1_IPROT)@h
ori r3,r3,BOOK3E_PAGESZ_1GB << MAS1_TSIZE_SHIFT
mtspr SPRN_MAS1,r3