Commit 9a77c4a0 authored Jul 20, 2020 by Nicholas Piggin Committed by Michael Ellerman Jul 20, 2020

powerpc/prom: Enable Radix GTSE in cpu pa-features



When '029ab30b ("powerpc/mm: Enable radix GTSE only if supported.")'
made GTSE an MMU feature, it was enabled by default in
powerpc-cpu-features but was missed in pa-features. This causes random
memory corruption during boot of PowerNV kernels where
CONFIG_PPC_DT_CPU_FTRS isn't enabled.

Fixes: 029ab30b ("powerpc/mm: Enable radix GTSE only if supported.")
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
[mpe: Unwrap long line]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200720044258.863574-1-bharata@linux.ibm.com

parent ef9f7cfa

arch/powerpc/kernel/prom.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -163,7 +163,7 @@ static struct ibm_pa_feature {
		{ .pabyte = 0, .pabit = 6, .cpu_features = CPU_FTR_NOEXECUTE },
		{ .pabyte = 1, .pabit = 2, .mmu_features = MMU_FTR_CI_LARGE_PAGE },
		#ifdef CONFIG_PPC_RADIX_MMU
		{ .pabyte = 40, .pabit = 0, .mmu_features = MMU_FTR_TYPE_RADIX },
		{ .pabyte = 40, .pabit = 0, .mmu_features = MMU_FTR_TYPE_RADIX \| MMU_FTR_GTSE },
		#endif
		{ .pabyte = 1, .pabit = 1, .invert = 1, .cpu_features = CPU_FTR_NODSISRALIGN },
		{ .pabyte = 5, .pabit = 0, .cpu_features = CPU_FTR_REAL_LE,

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