* [PATCH] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up
@ 2021-11-16 8:46 Ivan T. Ivanov
2021-11-21 18:52 ` Heiko Stuebner
0 siblings, 1 reply; 2+ messages in thread
From: Ivan T. Ivanov @ 2021-11-16 8:46 UTC (permalink / raw)
To: Heiko Stuebner; +Cc: Russell King, linux-arm-kernel, linux-rockchip
This fixes a potential kernel panic on memcpy when FORTIFY_SOURCE
is enabled. Because memory is iomem use appropriate function for
accessing it.
Signed-off-by: Ivan T. Ivanov <iivanov@suse.de>
---
arch/arm/mach-rockchip/platsmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c
index d60856898d97..5ec58d004b7d 100644
--- a/arch/arm/mach-rockchip/platsmp.c
+++ b/arch/arm/mach-rockchip/platsmp.c
@@ -189,7 +189,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
rockchip_boot_fn = __pa_symbol(secondary_startup);
/* copy the trampoline to sram, that runs during startup of the core */
- memcpy(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
+ memcpy_toio(sram_base_addr, &rockchip_secondary_trampoline, trampoline_sz);
flush_cache_all();
outer_clean_range(0, trampoline_sz);
--
2.33.1
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* Re: [PATCH] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up
2021-11-16 8:46 [PATCH] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up Ivan T. Ivanov
@ 2021-11-21 18:52 ` Heiko Stuebner
0 siblings, 0 replies; 2+ messages in thread
From: Heiko Stuebner @ 2021-11-21 18:52 UTC (permalink / raw)
To: Ivan T. Ivanov
Cc: Heiko Stuebner, Russell King, linux-rockchip, linux-arm-kernel
On Tue, 16 Nov 2021 10:46:16 +0200, Ivan T. Ivanov wrote:
> This fixes a potential kernel panic on memcpy when FORTIFY_SOURCE
> is enabled. Because memory is iomem use appropriate function for
> accessing it.
Applied, thanks!
[1/1] ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up
commit: 423e85e97aaf69e5198bbec6811e3825c8b5019a
Best regards,
--
Heiko Stuebner <heiko@sntech.de>
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