linux-kernel - [PATCH] x86/mm: use resource_size_t parameter in phys_mem_access

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Date:   Tue,  6 Sep 2022 13:36:32 +0800
From:   Xin Hao <xhao@...ux.alibaba.com>
To:     tglx@...utronix.de
Cc:     mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        x86@...nel.org, hpa@...or.com, luto@...nel.org,
        sathyanarayanan.kuppuswamy@...ux.intel.com, xhao@...ux.alibaba.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH] x86/mm: use resource_size_t parameter in phys_mem_access_encrypted()

As phys_mem_access_encrypted() func calls arch_memremap_can_ram_remap()
which use resource_size_t parameter, so there just to be consistent in
case to avoid ambiguity.

Signed-off-by: Xin Hao <xhao@...ux.alibaba.com>
---
 arch/x86/include/asm/io.h | 4 ++--
 arch/x86/mm/ioremap.c     | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index e9025640f634..bd10b0979bfa 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -354,10 +354,10 @@ extern bool arch_memremap_can_ram_remap(resource_size_t offset,
 					unsigned long flags);
 #define arch_memremap_can_ram_remap arch_memremap_can_ram_remap
 
-extern bool phys_mem_access_encrypted(unsigned long phys_addr,
+extern bool phys_mem_access_encrypted(resource_size_t phys_addr,
 				      unsigned long size);
 #else
-static inline bool phys_mem_access_encrypted(unsigned long phys_addr,
+static inline bool phys_mem_access_encrypted(resource_size_t phys_addr,
 					     unsigned long size)
 {
 	return true;
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 1ad0228f8ceb..5832ce84512f 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -792,7 +792,7 @@ pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
 			      : pgprot_decrypted(prot);
 }
 
-bool phys_mem_access_encrypted(unsigned long phys_addr, unsigned long size)
+bool phys_mem_access_encrypted(resource_size_t phys_addr, unsigned long size)
 {
 	return arch_memremap_can_ram_remap(phys_addr, size, 0);
 }
-- 
2.31.0