The patch titled
mm: make ioremap_prot() take a pgprot
has been added to the -mm tree. Its filename is
mm-make-ioremap_prot-take-a-pgprot.patch
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out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: make ioremap_prot() take a pgprot
From: Paul Mundt <lethal@xxxxxxxxxxxx>
The current definition of ioremap_prot() takes an unsigned long for the
page flags and then converts to/from a pgprot as necessary. This is
unfortunately not sufficient for the SH-X2 TLB case which has a 64-bit
pgprot and a 32-bit unsigned long.
An inspection of the tree shows that tile and cris also have their own
equivalent routines that are using the pgprot_t but do not set
HAVE_IOREMAP_PROT, both of which could trivially be adapted.
After cris/tile are updated there would also be enough critical mass to
move the powerpc devm_ioremap_prot() in to the generic lib/devres.c.
Signed-off-by: Paul Mundt <lethal@xxxxxxxxxxxx>
Acked-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Mikael Starvik <starvik@xxxxxxxx>
Cc: Jesper Nilsson <jesper.nilsson@xxxxxxxx>
Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/io.h | 8 +++++---
arch/powerpc/lib/devres.c | 10 +++++-----
arch/sh/Kconfig | 2 +-
arch/sh/boards/mach-landisk/setup.c | 2 +-
arch/sh/boards/mach-lboxre2/setup.c | 2 +-
arch/sh/boards/mach-sh03/setup.c | 2 +-
arch/sh/include/asm/io.h | 4 ++--
arch/x86/include/asm/io.h | 2 +-
arch/x86/mm/ioremap.c | 5 +++--
arch/x86/mm/pat.c | 5 ++---
include/linux/mm.h | 2 +-
mm/memory.c | 6 +++---
12 files changed, 26 insertions(+), 24 deletions(-)
diff -puN arch/powerpc/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot arch/powerpc/include/asm/io.h
--- a/arch/powerpc/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/powerpc/include/asm/io.h
@@ -618,7 +618,8 @@ static inline void iosync(void)
*
* * ioremap_flags allows to specify the page flags as an argument and can
* also be hooked by the platform via ppc_md. ioremap_prot is the exact
- * same thing as ioremap_flags.
+ * same thing as ioremap_flags, with the exception that it takes a
+ * pgprot value instead.
*
* * ioremap_nocache is identical to ioremap
*
@@ -643,7 +644,8 @@ extern void __iomem *ioremap(phys_addr_t
extern void __iomem *ioremap_flags(phys_addr_t address, unsigned long size,
unsigned long flags);
#define ioremap_nocache(addr, size) ioremap((addr), (size))
-#define ioremap_prot(addr, size, prot) ioremap_flags((addr), (size), (prot))
+#define ioremap_prot(addr, size, prot) ioremap_flags((addr), (size), \
+ pgprot_val(prot))
extern void iounmap(volatile void __iomem *addr);
@@ -779,7 +781,7 @@ static inline void * bus_to_virt(unsigne
#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset,
- size_t size, unsigned long flags);
+ size_t size, pgprot_t prot);
#endif /* __KERNEL__ */
diff -puN arch/powerpc/lib/devres.c~mm-make-ioremap_prot-take-a-pgprot arch/powerpc/lib/devres.c
--- a/arch/powerpc/lib/devres.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/powerpc/lib/devres.c
@@ -9,21 +9,21 @@
#include <linux/device.h> /* devres_*(), devm_ioremap_release() */
#include <linux/gfp.h>
-#include <linux/io.h> /* ioremap_flags() */
+#include <linux/io.h> /* ioremap_prot() */
#include <linux/module.h> /* EXPORT_SYMBOL() */
/**
- * devm_ioremap_prot - Managed ioremap_flags()
+ * devm_ioremap_prot - Managed ioremap_prot()
* @dev: Generic device to remap IO address for
* @offset: BUS offset to map
* @size: Size of map
- * @flags: Page flags
+ * @prot: Page protection flags
*
* Managed ioremap_prot(). Map is automatically unmapped on driver
* detach.
*/
void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset,
- size_t size, unsigned long flags)
+ size_t size, pgprot_t prot)
{
void __iomem **ptr, *addr;
@@ -31,7 +31,7 @@ void __iomem *devm_ioremap_prot(struct d
if (!ptr)
return NULL;
- addr = ioremap_flags(offset, size, flags);
+ addr = ioremap_prot(offset, size, prot);
if (addr) {
*ptr = addr;
devres_add(dev, ptr);
diff -puN arch/sh/Kconfig~mm-make-ioremap_prot-take-a-pgprot arch/sh/Kconfig
--- a/arch/sh/Kconfig~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/sh/Kconfig
@@ -33,7 +33,7 @@ config SUPERH32
def_bool ARCH = "sh"
select HAVE_KPROBES
select HAVE_KRETPROBES
- select HAVE_IOREMAP_PROT if MMU && !X2TLB
+ select HAVE_IOREMAP_PROT if MMU
select HAVE_FUNCTION_TRACER
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
diff -puN arch/sh/boards/mach-landisk/setup.c~mm-make-ioremap_prot-take-a-pgprot arch/sh/boards/mach-landisk/setup.c
--- a/arch/sh/boards/mach-landisk/setup.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/sh/boards/mach-landisk/setup.c
@@ -63,7 +63,7 @@ static int __init landisk_devices_setup(
/* open I/O area window */
paddrbase = virt_to_phys((void *)PA_AREA5_IO);
prot = PAGE_KERNEL_PCC(1, _PAGE_PCC_IO16);
- cf_ide_base = ioremap_prot(paddrbase, PAGE_SIZE, pgprot_val(prot));
+ cf_ide_base = ioremap_prot(paddrbase, PAGE_SIZE, prot);
if (!cf_ide_base) {
printk("allocate_cf_area : can't open CF I/O window!\n");
return -ENOMEM;
diff -puN arch/sh/boards/mach-lboxre2/setup.c~mm-make-ioremap_prot-take-a-pgprot arch/sh/boards/mach-lboxre2/setup.c
--- a/arch/sh/boards/mach-lboxre2/setup.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/sh/boards/mach-lboxre2/setup.c
@@ -57,7 +57,7 @@ static int __init lboxre2_devices_setup(
paddrbase = virt_to_phys((void*)PA_AREA5_IO);
psize = PAGE_SIZE;
prot = PAGE_KERNEL_PCC(1, _PAGE_PCC_IO16);
- cf0_io_base = (u32)ioremap_prot(paddrbase, psize, pgprot_val(prot));
+ cf0_io_base = (u32)ioremap_prot(paddrbase, psize, prot);
if (!cf0_io_base) {
printk(KERN_ERR "%s : can't open CF I/O window!\n" , __func__ );
return -ENOMEM;
diff -puN arch/sh/boards/mach-sh03/setup.c~mm-make-ioremap_prot-take-a-pgprot arch/sh/boards/mach-sh03/setup.c
--- a/arch/sh/boards/mach-sh03/setup.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/sh/boards/mach-sh03/setup.c
@@ -82,7 +82,7 @@ static int __init sh03_devices_setup(voi
/* open I/O area window */
paddrbase = virt_to_phys((void *)PA_AREA5_IO);
prot = PAGE_KERNEL_PCC(1, _PAGE_PCC_IO16);
- cf_ide_base = ioremap_prot(paddrbase, PAGE_SIZE, pgprot_val(prot));
+ cf_ide_base = ioremap_prot(paddrbase, PAGE_SIZE, prot);
if (!cf_ide_base) {
printk("allocate_cf_area : can't open CF I/O window!\n");
return -ENOMEM;
diff -puN arch/sh/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot arch/sh/include/asm/io.h
--- a/arch/sh/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/sh/include/asm/io.h
@@ -389,9 +389,9 @@ ioremap_cache(phys_addr_t offset, unsign
#ifdef CONFIG_HAVE_IOREMAP_PROT
static inline void __iomem *
-ioremap_prot(phys_addr_t offset, unsigned long size, unsigned long flags)
+ioremap_prot(phys_addr_t offset, unsigned long size, pgprot_t prot)
{
- return __ioremap_mode(offset, size, __pgprot(flags));
+ return __ioremap_mode(offset, size, prot);
}
#endif
diff -puN arch/x86/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot arch/x86/include/asm/io.h
--- a/arch/x86/include/asm/io.h~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/x86/include/asm/io.h
@@ -196,7 +196,7 @@ static inline unsigned int isa_virt_to_b
extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size,
- unsigned long prot_val);
+ pgprot_t prot);
/*
* The default ioremap() behavior is non-cached:
diff -puN arch/x86/mm/ioremap.c~mm-make-ioremap_prot-take-a-pgprot arch/x86/mm/ioremap.c
--- a/arch/x86/mm/ioremap.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/x86/mm/ioremap.c
@@ -243,9 +243,10 @@ void __iomem *ioremap_cache(resource_siz
EXPORT_SYMBOL(ioremap_cache);
void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
- unsigned long prot_val)
+ pgprot_t prot)
{
- return __ioremap_caller(phys_addr, size, (prot_val & _PAGE_CACHE_MASK),
+ return __ioremap_caller(phys_addr, size,
+ (pgprot_val(prot) & _PAGE_CACHE_MASK),
__builtin_return_address(0));
}
EXPORT_SYMBOL(ioremap_prot);
diff -puN arch/x86/mm/pat.c~mm-make-ioremap_prot-take-a-pgprot arch/x86/mm/pat.c
--- a/arch/x86/mm/pat.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/arch/x86/mm/pat.c
@@ -661,7 +661,6 @@ static void free_pfn_range(u64 paddr, un
int track_pfn_vma_copy(struct vm_area_struct *vma)
{
resource_size_t paddr;
- unsigned long prot;
unsigned long vma_size = vma->vm_end - vma->vm_start;
pgprot_t pgprot;
@@ -670,11 +669,11 @@ int track_pfn_vma_copy(struct vm_area_st
* reserve the whole chunk covered by vma. We need the
* starting address and protection from pte.
*/
- if (follow_phys(vma, vma->vm_start, 0, &prot, &paddr)) {
+ if (follow_phys(vma, vma->vm_start, 0, &pgprot, &paddr)) {
WARN_ON_ONCE(1);
return -EINVAL;
}
- pgprot = __pgprot(prot);
+
return reserve_pfn_range(paddr, vma_size, &pgprot, 1);
}
diff -puN include/linux/mm.h~mm-make-ioremap_prot-take-a-pgprot include/linux/mm.h
--- a/include/linux/mm.h~mm-make-ioremap_prot-take-a-pgprot
+++ a/include/linux/mm.h
@@ -819,7 +819,7 @@ void unmap_mapping_range(struct address_
int follow_pfn(struct vm_area_struct *vma, unsigned long address,
unsigned long *pfn);
int follow_phys(struct vm_area_struct *vma, unsigned long address,
- unsigned int flags, unsigned long *prot, resource_size_t *phys);
+ unsigned int flags, pgprot_t *prot, resource_size_t *phys);
int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
void *buf, int len, int write);
diff -puN mm/memory.c~mm-make-ioremap_prot-take-a-pgprot mm/memory.c
--- a/mm/memory.c~mm-make-ioremap_prot-take-a-pgprot
+++ a/mm/memory.c
@@ -3456,7 +3456,7 @@ EXPORT_SYMBOL(follow_pfn);
#ifdef CONFIG_HAVE_IOREMAP_PROT
int follow_phys(struct vm_area_struct *vma,
unsigned long address, unsigned int flags,
- unsigned long *prot, resource_size_t *phys)
+ pgprot_t *prot, resource_size_t *phys)
{
int ret = -EINVAL;
pte_t *ptep, pte;
@@ -3472,7 +3472,7 @@ int follow_phys(struct vm_area_struct *v
if ((flags & FOLL_WRITE) && !pte_write(pte))
goto unlock;
- *prot = pgprot_val(pte_pgprot(pte));
+ *prot = pte_pgprot(pte);
*phys = (resource_size_t)pte_pfn(pte) << PAGE_SHIFT;
ret = 0;
@@ -3486,7 +3486,7 @@ int generic_access_phys(struct vm_area_s
void *buf, int len, int write)
{
resource_size_t phys_addr;
- unsigned long prot = 0;
+ pgprot_t prot;
void __iomem *maddr;
int offset = addr & (PAGE_SIZE-1);
_
Patches currently in -mm which might be from lethal@xxxxxxxxxxxx are
linux-next.patch
mm-make-ioremap_prot-take-a-pgprot.patch
set_rtc_mmss-show-warning-message-only-once.patch
bitops-introduce-little-endian-bitops-for-most-architectures.patch
bitops-remove-minix-bitops-from-asm-bitopsh.patch
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