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powerpc/8xx: Inconditionally use task PGDIR in ITLB misses

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Now that modules exec page tables are preallocated, the instruction
TLBmiss handler can use task PGDIR inconditionally.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/774fd766a8b9bcb9173b5e677d5dad0df2d3970f.1724173828.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy
2024-08-20 19:23:52 +02:00
committed by Michael Ellerman
parent 16a71c0451
commit 33c527522f
1 changed files with 0 additions and 11 deletions
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11
arch/powerpc/kernel/head_8xx.S
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@@ -199,18 +199,7 @@ instruction_counter:
mfspr r10, SPRN_SRR0 /* Get effective address of fault */ mfspr r10, SPRN_SRR0 /* Get effective address of fault */
INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11) INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11)
mtspr SPRN_MD_EPN, r10 mtspr SPRN_MD_EPN, r10
#ifdef CONFIG_EXECMEM
mfcr r11
compare_to_kernel_boundary r10, r10
#endif
mfspr r10, SPRN_M_TWB /* Get level 1 table */ mfspr r10, SPRN_M_TWB /* Get level 1 table */
#ifdef CONFIG_EXECMEM
blt+ 3f
rlwinm r10, r10, 0, 20, 31
oris r10, r10, (swapper_pg_dir - PAGE_OFFSET)@ha
3:
mtcr r11
#endif
lwz r11, (swapper_pg_dir-PAGE_OFFSET)@l(r10) /* Get level 1 entry */ lwz r11, (swapper_pg_dir-PAGE_OFFSET)@l(r10) /* Get level 1 entry */
mtspr SPRN_MD_TWC, r11 mtspr SPRN_MD_TWC, r11
mfspr r10, SPRN_MD_TWC mfspr r10, SPRN_MD_TWC