diff options
| author | Minfei Huang <mnfhuang@gmail.com> | 2014-10-29 14:38:37 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-11-03 15:40:44 +0300 |
| commit | 63e7b6d90c1ebdb73d82eedb945b62ceedc3f963 (patch) | |
| tree | b70608ec34780769c93d7a3d261d625999be6327 /arch/x86/include/asm/pgtable_32_types.h | |
| parent | 96e70f83285676d8794f62f3c294d0247bef6b21 (diff) | |
| download | linux-63e7b6d90c1ebdb73d82eedb945b62ceedc3f963.tar.xz | |
x86: mm: Re-use the early_ioremap fixed area
The temp fixed area is only used during boot for early_ioremap(), and
it is unused when ioremap() is functional. vmalloc/pkmap area become
available after early boot so the temp fixed area is available for
re-use.
The virtual address is more precious on i386, especially turning on
high memory. So we can re-use the virtual address space.
Remove the now unused defines FIXADDR_BOOT_START and FIXADDR_BOOT_SIZE.
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Cc: pbonzini@redhat.com
Cc: bp@suse.de
Link: http://lkml.kernel.org/r/1414582717-32729-1-git-send-email-mnfhuang@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/pgtable_32_types.h')
| -rw-r--r-- | arch/x86/include/asm/pgtable_32_types.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h index 2ac5fc86abb3..9fb2f2bc8245 100644 --- a/arch/x86/include/asm/pgtable_32_types.h +++ b/arch/x86/include/asm/pgtable_32_types.h @@ -37,13 +37,13 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */ #define LAST_PKMAP 1024 #endif -#define PKMAP_BASE ((FIXADDR_BOOT_START - PAGE_SIZE * (LAST_PKMAP + 1)) \ +#define PKMAP_BASE ((FIXADDR_START - PAGE_SIZE * (LAST_PKMAP + 1)) \ & PMD_MASK) #ifdef CONFIG_HIGHMEM # define VMALLOC_END (PKMAP_BASE - 2 * PAGE_SIZE) #else -# define VMALLOC_END (FIXADDR_BOOT_START - 2 * PAGE_SIZE) +# define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE) #endif #define MODULES_VADDR VMALLOC_START |