From: Michael Ellerman Date: Fri, 17 Mar 2017 05:02:35 +0000 (+1100) Subject: powerpc/pseries: Don't give a warning when HPT resizing isn't available X-Git-Tag: v4.14-rc1~1264^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8971e1c79d3f6c9a5e6f7a65c50c41f434a4dae6;p=platform%2Fkernel%2Flinux-rpi.git powerpc/pseries: Don't give a warning when HPT resizing isn't available As of commit 438cc81a41e8 ("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 Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 251060c..8b1fe89 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -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)