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powerpc/pseries: Don't give a warning when HPT resizing isn't available 

As of commit 438cc81a41 ("powerpc/pseries: Automatically resize HPT
for memory hot add/remove"), when running on the pseries platform, we
always attempt to use the PAPR extension to resize the hashed page
table (HPT) when we add or remove memory.

This is fine, but when the extension is not available we'll give a
harmless, but scary warning. Instead check if the firmware supports HPT
resizing before populating the mmu_hash_ops.resize_hpt pointer.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2017-03-17 16:02:35 +11:00 committed by Michael Ellerman
parent f717629c7f
commit 8971e1c79d
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/platforms/pseries/lpar.c
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@ -751,7 +751,9 @@ void __init hpte_init_pseries(void)
mmu_hash_ops.flush_hash_range = pSeries_lpar_flush_hash_range;
mmu_hash_ops.hpte_clear_all = pseries_hpte_clear_all;
mmu_hash_ops.hugepage_invalidate = pSeries_lpar_hugepage_invalidate;
mmu_hash_ops.resize_hpt = pseries_lpar_resize_hpt;
if (firmware_has_feature(FW_FEATURE_HPT_RESIZE))
mmu_hash_ops.resize_hpt = pseries_lpar_resize_hpt;
}
void radix_init_pseries(void)