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| author | Mark Brown <broonie@kernel.org> | 2022-11-25 19:16:05 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-11-25 19:16:05 +0000 |
| commit | 5cd4d3886780bf9a846eada29a2aefe8bfcac027 (patch) | |
| tree | ea5cc9b11657912a1371932ad467a7a622e8010c /arch/powerpc/lib | |
| parent | ef3232e3dbd172fa17190fa8a852a3180a73bbdc (diff) | |
| parent | f0c4d9fc9cc9462659728d168387191387e903cc (diff) | |
| download | linux-5cd4d3886780bf9a846eada29a2aefe8bfcac027.tar.gz linux-5cd4d3886780bf9a846eada29a2aefe8bfcac027.tar.bz2 linux-5cd4d3886780bf9a846eada29a2aefe8bfcac027.zip | |
Merge tag 'v6.1-rc4' into spi-6.2
Linux 6.1-rc4 which should get my CI working on RPi3s again.
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/vmx-helper.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/lib/vmx-helper.c b/arch/powerpc/lib/vmx-helper.c index f76a50291fd7..d491da8d1838 100644 --- a/arch/powerpc/lib/vmx-helper.c +++ b/arch/powerpc/lib/vmx-helper.c @@ -36,7 +36,17 @@ int exit_vmx_usercopy(void) { disable_kernel_altivec(); pagefault_enable(); - preempt_enable(); + preempt_enable_no_resched(); + /* + * Must never explicitly call schedule (including preempt_enable()) + * while in a kuap-unlocked user copy, because the AMR register will + * not be saved and restored across context switch. However preempt + * kernels need to be preempted as soon as possible if need_resched is + * set and we are preemptible. The hack here is to schedule a + * decrementer to fire here and reschedule for us if necessary. + */ + if (IS_ENABLED(CONFIG_PREEMPT) && need_resched()) + set_dec(1); return 0; } |