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(parent: 0102263) | patch
powerpc/8xx: Always pin TLBs at startup.
authorChristophe Leroy <christophe.leroy@csgroup.eu>
Tue, 19 May 2020 05:49:15 +0000 (05:49 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 26 May 2020 12:22:22 +0000 (22:22 +1000)
commit722f6b4ed0f8557a8d3174fa8d00ff101820e1b0
tree4bc71891baee42144cc040a56549fc8d14a3420btree | snapshot
parent01022630d9887b286af7f1d53b7d4938cc179ed6commit | diff
powerpc/8xx: Always pin TLBs at startup.

At startup, map 32 Mbytes of memory through 4 pages of 8M,
and PIN them inconditionnaly. They need to be pinned because
KASAN is using page tables early and the TLBs might be
dynamically replaced otherwise.

Remove RSV4I flag after installing mappings unless
CONFIG_PIN_TLB_XXXX is selected.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b27c5767d18053b59f7eefddc189fcc3acf7b9c2.1589866984.git.christophe.leroy@csgroup.eu
arch/powerpc/kernel/head_8xx.S diff | blob | history
arch/powerpc/mm/nohash/8xx.c diff | blob | history
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