tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
ARC: uaccess: elide unaliged handling if hardware supports
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
+6
-4
+6
-4
arch/arc/include/asm/uaccess.h
+6
-4
arch/arc/include/asm/uaccess.h
···
146
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if (n == 0)
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return 0;
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-
/* unaligned */
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-
if (((unsigned long)to & 0x3) || ((unsigned long)from & 0x3)) {
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+
/* fallback for unaligned access when hardware doesn't support */
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+
if (!IS_ENABLED(CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS) &&
151
+
(((unsigned long)to & 0x3) || ((unsigned long)from & 0x3))) {
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unsigned char tmp;
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154
···
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if (n == 0)
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return 0;
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-
/* unaligned */
378
-
if (((unsigned long)to & 0x3) || ((unsigned long)from & 0x3)) {
376
+
/* fallback for unaligned access when hardware doesn't support */
377
+
if (!IS_ENABLED(CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS) &&
378
+
(((unsigned long)to & 0x3) || ((unsigned long)from & 0x3))) {
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unsigned char tmp;
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