The patch titled
Subject: mm: move is_ioremap_addr() into new header file
has been added to the -mm mm-unstable branch. Its filename is
mm-move-is_ioremap_addr-into-new-header-file.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-move-is_ioremap_addr-into-new-header-file.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Baoquan He <bhe@xxxxxxxxxx>
Subject: mm: move is_ioremap_addr() into new header file
Date: Thu, 6 Jul 2023 23:45:17 +0800
Now is_ioremap_addr() is only used in kernel/iomem.c and gonna be used in
mm/ioremap.c. Move it into its own new header file linux/ioremap.h.
Link: https://lkml.kernel.org/r/20230706154520.11257-17-bhe@xxxxxxxxxx
Suggested-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Brian Cain <bcain@xxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: David Laight <David.Laight@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Stafford Horne <shorne@xxxxxxxxx>
Cc: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>
Cc: Sven Schnelle <svens@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/pgtable.h | 10 ---------
include/linux/ioremap.h | 30 +++++++++++++++++++++++++++
include/linux/mm.h | 5 ----
kernel/iomem.c | 1
mm/ioremap.c | 10 ---------
5 files changed, 32 insertions(+), 24 deletions(-)
--- a/arch/powerpc/include/asm/pgtable.h~mm-move-is_ioremap_addr-into-new-header-file
+++ a/arch/powerpc/include/asm/pgtable.h
@@ -157,16 +157,6 @@ static inline pgtable_t pmd_pgtable(pmd_
return (pgtable_t)pmd_page_vaddr(pmd);
}
-#ifdef CONFIG_PPC64
-#define is_ioremap_addr is_ioremap_addr
-static inline bool is_ioremap_addr(const void *x)
-{
- unsigned long addr = (unsigned long)x;
-
- return addr >= IOREMAP_BASE && addr < IOREMAP_END;
-}
-#endif /* CONFIG_PPC64 */
-
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PGTABLE_H */
--- /dev/null
+++ a/include/linux/ioremap.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_IOREMAP_H
+#define _LINUX_IOREMAP_H
+
+#include <linux/kasan.h>
+#include <asm/pgtable.h>
+
+#if defined(CONFIG_HAS_IOMEM) || defined(CONFIG_GENERIC_IOREMAP)
+/*
+ * Ioremap often, but not always uses the generic vmalloc area. E.g on
+ * Power ARCH, it could have different ioremap space.
+ */
+#ifndef IOREMAP_START
+#define IOREMAP_START VMALLOC_START
+#define IOREMAP_END VMALLOC_END
+#endif
+static inline bool is_ioremap_addr(const void *x)
+{
+ unsigned long addr = (unsigned long)kasan_reset_tag(x);
+
+ return addr >= IOREMAP_START && addr < IOREMAP_END;
+}
+#else
+static inline bool is_ioremap_addr(const void *x)
+{
+ return false;
+}
+#endif
+
+#endif /* _LINUX_IOREMAP_H */
--- a/include/linux/mm.h~mm-move-is_ioremap_addr-into-new-header-file
+++ a/include/linux/mm.h
@@ -1090,11 +1090,6 @@ unsigned long vmalloc_to_pfn(const void
* On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there
* is no special casing required.
*/
-
-#ifndef is_ioremap_addr
-#define is_ioremap_addr(x) is_vmalloc_addr(x)
-#endif
-
#ifdef CONFIG_MMU
extern bool is_vmalloc_addr(const void *x);
extern int is_vmalloc_or_module_addr(const void *x);
--- a/kernel/iomem.c~mm-move-is_ioremap_addr-into-new-header-file
+++ a/kernel/iomem.c
@@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/io.h>
#include <linux/mm.h>
+#include <linux/ioremap.h>
#ifndef ioremap_cache
/* temporary while we convert existing ioremap_cache users to memremap */
--- a/mm/ioremap.c~mm-move-is_ioremap_addr-into-new-header-file
+++ a/mm/ioremap.c
@@ -10,15 +10,7 @@
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/export.h>
-
-/*
- * Ioremap often, but not always uses the generic vmalloc area. E.g on
- * Power ARCH, it could have different ioremap space.
- */
-#ifndef IOREMAP_START
-#define IOREMAP_START VMALLOC_START
-#define IOREMAP_END VMALLOC_END
-#endif
+#include <linux/ioremap.h>
void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size,
pgprot_t prot)
_
Patches currently in -mm which might be from bhe@xxxxxxxxxx are
asm-generic-iomaph-remove-arch_has_ioremap_xx-macros.patch
hexagon-mm-convert-to-generic_ioremap.patch
openrisc-mm-remove-unneeded-early-ioremap-code.patch
mm-ioremap-allow-arch-to-have-its-own-ioremap-method-definition.patch
mm-ioremap-add-slab-availability-checking-in-ioremap_prot.patch
arc-mm-convert-to-generic_ioremap.patch
ia64-mm-convert-to-generic_ioremap.patch
openrisc-mm-convert-to-generic_ioremap.patch
s390-mm-convert-to-generic_ioremap.patch
sh-add-asm-generic-ioh-including.patch
sh-mm-convert-to-generic_ioremap.patch
xtensa-mm-convert-to-generic_ioremap.patch
parisc-mm-convert-to-generic_ioremap.patch
mm-move-is_ioremap_addr-into-new-header-file.patch
arm64-mm-add-wrapper-function-ioremap_prot.patch
mm-ioremap-remove-unneeded-ioremap_allowed-and-iounmap_allowed.patch
