powerpc/pseries: Read TLB Block Invalidate Characteristics

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The PAPR document specifies the TLB Block Invalidate Characteristics
which tells for each pair of segment base page size, actual page size,
the size of the block the hcall H_BLOCK_REMOVE supports.

These characteristics are loaded at boot time in a new table
hblkr_size. The table is separate from the mmu_psize_def because this
is specific to the pseries platform.

A new init function, pseries_lpar_read_hblkrm_characteristics() is
added to read the characteristics. It is called from
pSeries_setup_arch().

Fixes: ba2dd8a26b ("powerpc/pseries/mm: call H_BLOCK_REMOVE")
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190920130523.20441-2-ldufour@linux.ibm.com

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Laurent Dufour 2019-09-20 15:05:22 +02:00 • committed by Michael Ellerman

parent 3a83f677a6

commit 1211ee61b4

3 changed files with 142 additions and 0 deletions

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arch/powerpc/platforms/pseries/lpar.c

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arch/powerpc/platforms/pseries/pseries.h

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arch/powerpc/platforms/pseries/setup.c

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