Commit 4a280a41 authored by Joakim Tjernlund's avatar Joakim Tjernlund Committed by Benjamin Herrenschmidt

powerpc/8xx: Add missing Guarded setting in DTLB Error.

only DTLB Miss did set this bit, DTLB Error needs too otherwise
the setting is lost when the page becomes dirty.
Signed-off-by: default avatarJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 0a2ab51f
......@@ -553,8 +553,15 @@ DARFixed:/* Return from dcbx instruction bug workaround, r10 holds value of DAR
ori r11, r11, 1 /* Set valid bit in physical L2 page */
DO_8xx_CPU6(0x3b80, r3)
mtspr SPRN_MD_TWC, r11 /* Load pte table base address */
mfspr r11, SPRN_MD_TWC /* ....and get the pte address */
lwz r10, 0(r11) /* Get the pte */
mfspr r10, SPRN_MD_TWC /* ....and get the pte address */
lwz r10, 0(r10) /* Get the pte */
/* Insert the Guarded flag into the TWC from the Linux PTE.
* It is bit 27 of both the Linux PTE and the TWC
*/
rlwimi r11, r10, 0, 27, 27
DO_8xx_CPU6(0x3b80, r3)
mtspr SPRN_MD_TWC, r11
mfspr r11, SPRN_MD_TWC /* get the pte address again */
ori r10, r10, _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_HWWRITE
stw r10, 0(r11) /* and update pte in table */
......
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