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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-07-09 08:59:42 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-20 22:57:59 +1000 |
| commit | e0d8e991be641ba0034c67785bf86f6c097869d6 (patch) | |
| tree | 608b14a2b1c2097b199ad995f8ca8b151e120321 /arch/powerpc/mm/book3s64/hash_utils.c | |
| parent | 000a42b35a54372597f0657f6b9875b38c641864 (diff) | |
| download | lwn-e0d8e991be641ba0034c67785bf86f6c097869d6.tar.gz lwn-e0d8e991be641ba0034c67785bf86f6c097869d6.zip | |
powerpc/book3s64/kuap: Move UAMOR setup to key init function
UAMOR values are not application-specific. The kernel initializes
its value based on different reserved keys. Remove the thread-specific
UAMOR value and don't switch the UAMOR on context switch.
Move UAMOR initialization to key initialization code and remove
thread_struct.uamor because it is not used anymore.
Before commit: 4a4a5e5d2aad ("powerpc/pkeys: key allocation/deallocation must not change pkey registers")
we used to update uamor based on key allocation and free.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200709032946.881753-20-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm/book3s64/hash_utils.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_utils.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c index eec6f4e5e481..9dfb0ceed5e3 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -1110,6 +1110,10 @@ void hash__early_init_mmu_secondary(void) if (cpu_has_feature(CPU_FTR_ARCH_206) && cpu_has_feature(CPU_FTR_HVMODE)) tlbiel_all(); + +#ifdef CONFIG_PPC_MEM_KEYS + mtspr(SPRN_UAMOR, default_uamor); +#endif } #endif /* CONFIG_SMP */ |