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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-14 13:40:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-14 13:40:27 -0700 |
| commit | 7fca4dee610dffbe119714231cac0d59496bc193 (patch) | |
| tree | 033049367ea586eb5725b7f3bd5bdceb168a6542 | |
| parent | 0520058d0578c2924b1571c16281f873cb4a3d2b (diff) | |
| parent | 6553fb799f601497ca0703682e2aff131197dc5c (diff) | |
| download | prandom-7fca4dee610dffbe119714231cac0d59496bc193.tar.gz | |
Merge tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"One fix for a boot crash on some platforms introduced by the recent
pkey refactoring.
Thanks to Christian Zigotzky and Aneesh Kumar K.V"
* tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_utils.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/pkeys.c | 12 |
2 files changed, 8 insertions, 9 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c index 1478fceeb683ce..1da9dbba92171b 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -1115,9 +1115,8 @@ void hash__early_init_mmu_secondary(void) && cpu_has_feature(CPU_FTR_HVMODE)) tlbiel_all(); -#ifdef CONFIG_PPC_MEM_KEYS - mtspr(SPRN_UAMOR, default_uamor); -#endif + if (IS_ENABLED(CONFIG_PPC_MEM_KEYS) && mmu_has_feature(MMU_FTR_PKEY)) + mtspr(SPRN_UAMOR, default_uamor); } #endif /* CONFIG_SMP */ diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c index 69a6b87f2bb4e3..b1d091a9761193 100644 --- a/arch/powerpc/mm/book3s64/pkeys.c +++ b/arch/powerpc/mm/book3s64/pkeys.c @@ -73,12 +73,6 @@ static int scan_pkey_feature(void) if (early_radix_enabled()) return 0; - /* - * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1 - */ - if (!early_cpu_has_feature(CPU_FTR_ARCH_206)) - return 0; - ret = of_scan_flat_dt(dt_scan_storage_keys, &pkeys_total); if (ret == 0) { /* @@ -124,6 +118,12 @@ void __init pkey_early_init_devtree(void) __builtin_popcountl(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT) != (sizeof(u64) * BITS_PER_BYTE)); + /* + * Only P7 and above supports SPRN_AMR update with MSR[PR] = 1 + */ + if (!early_cpu_has_feature(CPU_FTR_ARCH_206)) + return; + /* scan the device tree for pkey feature */ pkeys_total = scan_pkey_feature(); if (!pkeys_total) |