Commit 72b7a9e5 authored Feb 08, 2021 by Christophe Leroy Committed by Michael Ellerman Feb 11, 2021

powerpc/syscall: Use is_compat_task()

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@csgroup.eu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c8094662199337a7200fea9f6e1d1f8b1b6d5f69.1612796617.git.christophe.leroy@csgroup.eu

parent 344bb20b

arch/powerpc/kernel/interrupt.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2,6 +2,8 @@

		#include <linux/context_tracking.h>
		#include <linux/err.h>
		#include <linux/compat.h>

		#include <asm/asm-prototypes.h>
		#include <asm/kup.h>
		#include <asm/cputime.h>
		@@ -118,7 +120,7 @@ notrace long system_call_exception(long r3, long r4, long r5,
		/* May be faster to do array_index_nospec? */
		barrier_nospec();

		if (unlikely(is_32bit_task())) {
		if (unlikely(is_compat_task())) {
		f = (void *)compat_sys_call_table[r0];

		r3 &= 0x00000000ffffffffULL;