linux-kernel - [PATCH] riscv: put va_kernel_xip_pa_offset into CONFIG_XIP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20231220103428.61758-1-cuiyunhui@bytedance.com>
Date: Wed, 20 Dec 2023 18:34:28 +0800
From: Yunhui Cui <cuiyunhui@...edance.com>
To: paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	ajones@...tanamicro.com,
	alexghiti@...osinc.com,
	anup@...infault.org,
	samitolvanen@...gle.com,
	rppt@...nel.org,
	panqinglin2020@...as.ac.cn,
	cuiyunhui@...edance.com,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] riscv: put va_kernel_xip_pa_offset into CONFIG_XIP_KERNEL

opitmize the kernel_mapping_pa_to_va() and kernel_mapping_va_to_pa().

Signed-off-by: Yunhui Cui <cuiyunhui@...edance.com>
---
 arch/riscv/include/asm/page.h | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 5488ecc337b6..0d2b479d02cd 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -113,8 +113,8 @@ struct kernel_mapping {
 	unsigned long va_pa_offset;
 	/* Offset between kernel mapping virtual address and kernel load address */
 	unsigned long va_kernel_pa_offset;
-	unsigned long va_kernel_xip_pa_offset;
 #ifdef CONFIG_XIP_KERNEL
+	unsigned long va_kernel_xip_pa_offset;
 	uintptr_t xiprom;
 	uintptr_t xiprom_sz;
 #endif
@@ -134,12 +134,25 @@ extern phys_addr_t phys_ram_base;
 #else
 void *linear_mapping_pa_to_va(unsigned long x);
 #endif
-#define kernel_mapping_pa_to_va(y)	({					\
-	unsigned long _y = (unsigned long)(y);					\
-	(IS_ENABLED(CONFIG_XIP_KERNEL) && _y < phys_ram_base) ?			\
-		(void *)(_y + kernel_map.va_kernel_xip_pa_offset) :		\
-		(void *)(_y + kernel_map.va_kernel_pa_offset + XIP_OFFSET);	\
-	})
+
+#ifdef CONFIG_XIP_KERNEL
+#define kernel_mapping_pa_to_va(y)							\
+	(((unsigned long)(y) < phys_ram_base) ?						\
+		(void *)((unsigned long)(y) + kernel_map.va_kernel_xip_pa_offset) :	\
+		(void *)((unsigned long)(y) + kernel_map.va_kernel_pa_offset + XIP_OFFSET))
+
+#define kernel_mapping_va_to_pa(y)						\
+	(((unsigned long)(y) < kernel_map.virt_addr + XIP_OFFSET) ?		\
+		((unsigned long)(y) - kernel_map.va_kernel_xip_pa_offset) :	\
+		((unsigned long)(y) - kernel_map.va_kernel_pa_offset - XIP_OFFSET))
+#else
+#define kernel_mapping_pa_to_va(y)						\
+	((void *)((unsigned long)(y) + kernel_map.va_kernel_pa_offset + XIP_OFFSET))
+
+#define kernel_mapping_va_to_pa(y)						\
+	((unsigned long)(y) - kernel_map.va_kernel_pa_offset - XIP_OFFSET)
+#endif
+
 #define __pa_to_va_nodebug(x)		linear_mapping_pa_to_va(x)
 
 #ifndef CONFIG_DEBUG_VIRTUAL
@@ -147,12 +160,6 @@ void *linear_mapping_pa_to_va(unsigned long x);
 #else
 phys_addr_t linear_mapping_va_to_pa(unsigned long x);
 #endif
-#define kernel_mapping_va_to_pa(y) ({						\
-	unsigned long _y = (unsigned long)(y);					\
-	(IS_ENABLED(CONFIG_XIP_KERNEL) && _y < kernel_map.virt_addr + XIP_OFFSET) ? \
-		(_y - kernel_map.va_kernel_xip_pa_offset) :			\
-		(_y - kernel_map.va_kernel_pa_offset - XIP_OFFSET);		\
-	})
 
 #define __va_to_pa_nodebug(x)	({						\
 	unsigned long _x = x;							\
-- 
2.20.1