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| author | Jakub Kicinski <kuba@kernel.org> | 2021-05-27 19:22:11 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-05-27 19:55:10 +0300 |
| commit | 5ada57a9a6b0be0e6dfcbd4afa519b0347fd5649 (patch) | |
| tree | f82f466df9272bb0c385320b25adc51c45309f84 /arch/arm64/mm/proc.S | |
| parent | 59c56342459a483d5e563ed8b5fdb77ab7622a73 (diff) | |
| parent | d7c5303fbc8ac874ae3e597a5a0d3707dc0230b4 (diff) | |
| download | linux-5ada57a9a6b0be0e6dfcbd4afa519b0347fd5649.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
cdc-wdm: s/kill_urbs/poison_urbs/ to fix build
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 0a48191534ff..97d7bcd8d4f2 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -447,6 +447,18 @@ SYM_FUNC_START(__cpu_setup) mov x10, #(SYS_GCR_EL1_RRND | SYS_GCR_EL1_EXCL_MASK) msr_s SYS_GCR_EL1, x10 + /* + * If GCR_EL1.RRND=1 is implemented the same way as RRND=0, then + * RGSR_EL1.SEED must be non-zero for IRG to produce + * pseudorandom numbers. As RGSR_EL1 is UNKNOWN out of reset, we + * must initialize it. + */ + mrs x10, CNTVCT_EL0 + ands x10, x10, #SYS_RGSR_EL1_SEED_MASK + csinc x10, x10, xzr, ne + lsl x10, x10, #SYS_RGSR_EL1_SEED_SHIFT + msr_s SYS_RGSR_EL1, x10 + /* clear any pending tag check faults in TFSR*_EL1 */ msr_s SYS_TFSR_EL1, xzr msr_s SYS_TFSRE0_EL1, xzr |