powerpc/6xx: Store PGDIR physical address in a SPRG

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Use SPRN_SPRG2 to store the current thread PGDIR and
avoid reading thread_struct.pgdir at every TLB miss.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Christophe Leroy 2019-02-21 10:37:55 +00:00 • committed by Michael Ellerman

parent 0df977eafc

commit 93c4a162b0

4 changed files with 18 additions and 15 deletions

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1

arch/powerpc/include/asm/reg.h

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4

arch/powerpc/kernel/cpu_setup_6xx.S

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25

arch/powerpc/kernel/head_32.S

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3

arch/powerpc/mm/hash_low_32.S

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