Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [RFC PATCH v3 10/15] powerpc/syscall: Use is_compat_task() | Date | Mon, 6 Apr 2020 18:16:46 +0000 (UTC) |
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Instead of hard comparing task flags with _TIF_32BIT, use is_compat_task(). The advantage is that it returns 0 on PPC32 allthough _TIF_32BIT is always set.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/kernel/syscall.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/syscall.c b/arch/powerpc/kernel/syscall.c index 98c98ce12f7d..0ad4250d2ce8 100644 --- a/arch/powerpc/kernel/syscall.c +++ b/arch/powerpc/kernel/syscall.c @@ -1,6 +1,8 @@ // SPDX-License-Identifier: GPL-2.0-or-later #include <linux/err.h> +#include <linux/compat.h> + #include <asm/asm-prototypes.h> #include <asm/kup.h> #include <asm/cputime.h> @@ -86,7 +88,7 @@ notrace long system_call_exception(long r3, long r4, long r5, /* May be faster to do array_index_nospec? */ barrier_nospec(); - if (unlikely(ti_flags & _TIF_32BIT)) { + if (is_compat_task()) { f = (void *)compat_sys_call_table[r0]; r3 &= 0x00000000ffffffffULL; -- 2.25.0
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