This is a note to let you know that I've just added the patch titled
LoongArch: Fix reserving screen info memory for above-4G firmware
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
loongarch-fix-reserving-screen-info-memory-for-above.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7e2a735d283fe40eee22482ca3343a52853d4028
Author: Huacai Chen <chenhuacai@xxxxxxxxxx>
Date: Mon Dec 2 16:42:07 2024 +0800
LoongArch: Fix reserving screen info memory for above-4G firmware
[ Upstream commit 55dc2f8f263448f1e6c7ef135d08e640d5a4826e ]
Since screen_info.lfb_base is a __u32 type, an above-4G address need an
ext_lfb_base to present its higher 32bits. In init_screen_info() we can
use __screen_info_lfb_base() to handle this case for reserving screen
info memory.
Signed-off-by: Xuefeng Zhao <zhaoxuefeng@xxxxxxxxxxx>
Signed-off-by: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
Signed-off-by: Tianyang Zhang <zhangtianyang@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c
index 2bf86aeda874..de21e72759ee 100644
--- a/arch/loongarch/kernel/efi.c
+++ b/arch/loongarch/kernel/efi.c
@@ -95,7 +95,7 @@ static void __init init_screen_info(void)
memset(si, 0, sizeof(*si));
early_memunmap(si, sizeof(*si));
- memblock_reserve(screen_info.lfb_base, screen_info.lfb_size);
+ memblock_reserve(__screen_info_lfb_base(&screen_info), screen_info.lfb_size);
}
void __init efi_init(void)
