[PATCH 3/4] parisc: Use absolute_pointer for memcmp on fixed memory location
From: Guenter Roeck <linux@roeck-us.net>
Date: 2021-09-12 16:02:22
Also in:
linux-alpha, lkml
Subsystem:
parisc architecture, the rest · Maintainers:
"James E.J. Bottomley", Helge Deller, Linus Torvalds
parisc:allmodconfig fails to build with the following error when using gcc 11.x. arch/parisc/kernel/setup.c: In function 'start_parisc': arch/parisc/kernel/setup.c:389:28: error: '__builtin_memcmp_eq' specified bound 8 exceeds source size 0 Avoid the problem by using absolute_pointer() when providing a memory address to memcmp(). Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- arch/parisc/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index cceb09855e03..4e13345b6581 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c@@ -384,7 +384,7 @@ void __init start_parisc(void) struct pdc_coproc_cfg coproc_cfg; /* check QEMU/SeaBIOS marker in PAGE0 */ - running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0); + running_on_qemu = (memcmp(absolute_pointer(&PAGE0->pad0), "SeaBIOS", 8) == 0); cpunum = smp_processor_id();
--
2.33.0