From: George Guo <[email protected]>
When CONFIG_KFENCE is enabled, the virt_to_phys() and phys_to_virt()
macros in arch/loongarch/include/asm/io.h expand to use offset_in_page()
and page_address(), both of which are declared in <linux/mm.h>.
Without this include, any translation unit that includes <asm/io.h> and
expands these macros with CONFIG_KFENCE=y will fail to build. This was
observed when building kernel/liveupdate/luo_session.c with
CONFIG_KFENCE=y:
asm/io.h: error: implicit declaration of function 'offset_in_page'
asm/io.h: error: implicit declaration of function 'page_address'
Add the missing include to fix these build errors.
Fixes: 0ca84aeaee15 ("LoongArch: Make {virt, phys, page, pfn} translation work
with KFENCE")
Co-developed-by: Kexin Liu <[email protected]>
Signed-off-by: Kexin Liu <[email protected]>
Signed-off-by: George Guo <[email protected]>
---
arch/loongarch/include/asm/io.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h
index 0130185e0349..7ff4aa72a34a 100644
--- a/arch/loongarch/include/asm/io.h
+++ b/arch/loongarch/include/asm/io.h
@@ -13,6 +13,7 @@
#include <asm/page.h>
#include <asm/pgtable-bits.h>
#include <asm/string.h>
+#include <linux/mm.h>
extern void __init __iomem *early_ioremap(phys_addr_t phys_addr, unsigned long
size);
extern void __init early_iounmap(void __iomem *addr, unsigned long size);
--
2.25.1
