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x86: fix set_fixmap to use phys_addr_t

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Impact: fix kprobes crash on 32-bit with RAM above 4G

Use phys_addr_t for receiving a physical address argument
instead of unsigned long. This allows fixmap to handle
pages higher than 4GB on x86-32.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: systemtap-ml <systemtap@sources.redhat.com>
Cc: Gary Hade <garyhade@us.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <49DE3695.6040800@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Masami Hiramatsu
2009-04-09 10:55:33 -07:00
committed by Ingo Molnar
parent a0d22f485a
commit 9b987aeb4a
6 changed files with 24 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/include/asm/fixmap.h
View File

@ -151,11 +151,11 @@ extern pte_t *pkmap_page_table;
void __native_set_fixmap(enum fixed_addresses idx, pte_t pte);
void native_set_fixmap(enum fixed_addresses idx,
unsigned long phys, pgprot_t flags);
phys_addr_t phys, pgprot_t flags);
#ifndef CONFIG_PARAVIRT
static inline void __set_fixmap(enum fixed_addresses idx,
unsigned long phys, pgprot_t flags)
phys_addr_t phys, pgprot_t flags)
{
native_set_fixmap(idx, phys, flags);
}

6
arch/x86/include/asm/io.h
View File

@ -193,8 +193,10 @@ extern void __iomem *ioremap_wc(resource_size_t offset, unsigned long size);
*/
extern void early_ioremap_init(void);
extern void early_ioremap_reset(void);
extern void __iomem *early_ioremap(unsigned long offset, unsigned long size);
extern void __iomem *early_memremap(unsigned long offset, unsigned long size);
extern void __iomem *early_ioremap(resource_size_t phys_addr,
unsigned long size);
extern void __iomem *early_memremap(resource_size_t phys_addr,
unsigned long size);
extern void early_iounmap(void __iomem *addr, unsigned long size);
#define IO_SPACE_LIMIT 0xffff

4
arch/x86/include/asm/paravirt.h
View File

@ -347,7 +347,7 @@ struct pv_mmu_ops {
/* Sometimes the physical address is a pfn, and sometimes its
an mfn. We can tell which is which from the index. */
void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
unsigned long phys, pgprot_t flags);
phys_addr_t phys, pgprot_t flags);
};
struct raw_spinlock;
@ -1432,7 +1432,7 @@ static inline void arch_leave_lazy_mmu_mode(void)
void arch_flush_lazy_mmu_mode(void);
static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
unsigned long phys, pgprot_t flags)
phys_addr_t phys, pgprot_t flags)
{
pv_mmu_ops.set_fixmap(idx, phys, flags);
}