powerpc/mm: dump block address translation on book3s/32

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This patch adds a debugfs file to dump block address translation:

~# cat /sys/kernel/debug/powerpc/block_address_translation
---[ Instruction Block Address Translations ]---
0:         -
1:         -
2: 0xc0000000-0xcfffffff 0x00000000 Kernel EXEC coherent
3: 0xd0000000-0xdfffffff 0x10000000 Kernel EXEC coherent
4:         -
5:         -
6:         -
7:         -

---[ Data Block Address Translations ]---
0:         -
1:         -
2: 0xc0000000-0xcfffffff 0x00000000 Kernel RW coherent
3: 0xd0000000-0xdfffffff 0x10000000 Kernel RW coherent
4:         -
5:         -
6:         -
7:         -

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

This commit is contained in:

Christophe Leroy 2018-12-03 17:40:25 +00:00 • committed by Michael Ellerman

parent 0261a508c9

commit 7c91efce16

3 changed files with 178 additions and 1 deletions

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4

arch/powerpc/include/asm/book3s/32/mmu-hash.h

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2

arch/powerpc/mm/Makefile

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173

arch/powerpc/mm/dump_bats.c

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