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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-10-19 10:29:23 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-12-09 14:41:19 +0300 |
| commit | 937fb7003ee1f37faed1f1a4ece46e8a14863d92 (patch) | |
| tree | f75e83e40cf99ba19d199c20002671aefdcb745b /arch/powerpc/kernel/interrupt.c | |
| parent | 2341964e27b02b2ca1deef8a18df59d1db7b9085 (diff) | |
| download | linux-937fb7003ee1f37faed1f1a4ece46e8a14863d92.tar.xz | |
powerpc/kuap: Add kuap_lock()
Add kuap_lock() and call it when entering interrupts from user.
It is called kuap_lock() as it is similar to kuap_save_and_lock()
without the save.
However book3s/32 already have a kuap_lock(). Rename it
kuap_lock_addr().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4437e2deb9f6f549f7089d45e9c6f96a7e77905a.1634627931.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/interrupt.c')
| -rw-r--r-- | arch/powerpc/kernel/interrupt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c index 75dc045bdcb8..beb55bc92ffe 100644 --- a/arch/powerpc/kernel/interrupt.c +++ b/arch/powerpc/kernel/interrupt.c @@ -81,6 +81,8 @@ notrace long system_call_exception(long r3, long r4, long r5, { syscall_fn f; + kuap_lock(); + regs->orig_gpr3 = r3; if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) |