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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 16:38:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 16:38:06 -0700
commit26c12d93348f0bda0756aff83f4867d9ae58a5a6 (patch)
tree65221f6837c66a9260c5c973e5fb908b10e0d504 /arch/x86
parentdc5ed40686a4da95881c35d913b60f867755cbe2 (diff)
parentfdc5813fbbd484a54c88477f91a78934cda8bb32 (diff)
Merge branch 'akpm' (incoming from Andrew)
Merge second patch-bomb from Andrew Morton: - the rest of MM - zram updates - zswap updates - exit - procfs - exec - wait - crash dump - lib/idr - rapidio - adfs, affs, bfs, ufs - cris - Kconfig things - initramfs - small amount of IPC material - percpu enhancements - early ioremap support - various other misc things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (156 commits) MAINTAINERS: update Intel C600 SAS driver maintainers fs/ufs: remove unused ufs_super_block_third pointer fs/ufs: remove unused ufs_super_block_second pointer fs/ufs: remove unused ufs_super_block_first pointer fs/ufs/super.c: add __init to init_inodecache() doc/kernel-parameters.txt: add early_ioremap_debug arm64: add early_ioremap support arm64: initialize pgprot info earlier in boot x86: use generic early_ioremap mm: create generic early_ioremap() support x86/mm: sparse warning fix for early_memremap lglock: map to spinlock when !CONFIG_SMP percpu: add preemption checks to __this_cpu ops vmstat: use raw_cpu_ops to avoid false positives on preemption checks slub: use raw_cpu_inc for incrementing statistics net: replace __this_cpu_inc in route.c with raw_cpu_inc modules: use raw_cpu_write for initialization of per cpu refcount. mm: use raw_cpu ops for determining current NUMA node percpu: add raw_cpu_ops slub: fix leak of 'name' in sysfs_slab_add ...
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--arch/x86/include/asm/Kbuild1
-rw-r--r--arch/x86/include/asm/bug.h3
-rw-r--r--arch/x86/include/asm/fixmap.h6
-rw-r--r--arch/x86/include/asm/io.h14
-rw-r--r--arch/x86/include/asm/percpu.h98
-rw-r--r--arch/x86/include/asm/preempt.h16
-rw-r--r--arch/x86/mm/ioremap.c224
-rw-r--r--arch/x86/mm/pgtable_32.c2
9 files changed, 70 insertions, 295 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f73071742975..5b8ec0f53b57 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -43,6 +43,7 @@ config X86
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if !SWIOTLB
select HAVE_KRETPROBES
+ select GENERIC_EARLY_IOREMAP
select HAVE_OPTPROBES
select HAVE_KPROBES_ON_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 4acddc43ee0c..3ca9762e1649 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -5,5 +5,6 @@ genhdr-y += unistd_64.h
genhdr-y += unistd_x32.h
generic-y += clkdev.h
+generic-y += early_ioremap.h
generic-y += cputime.h
generic-y += mcs_spinlock.h
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
index 2f03ff018d36..ba38ebbaced3 100644
--- a/arch/x86/include/asm/bug.h
+++ b/arch/x86/include/asm/bug.h
@@ -1,7 +1,6 @@
#ifndef _ASM_X86_BUG_H
#define _ASM_X86_BUG_H
-#ifdef CONFIG_BUG
#define HAVE_ARCH_BUG
#ifdef CONFIG_DEBUG_BUGVERBOSE
@@ -33,8 +32,6 @@ do { \
} while (0)
#endif
-#endif /* !CONFIG_BUG */
-
#include <asm-generic/bug.h>
#endif /* _ASM_X86_BUG_H */
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 8dcd35c4c787..43f482a0db37 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -163,5 +163,11 @@ static inline void __set_fixmap(enum fixed_addresses idx,
#include <asm-generic/fixmap.h>
+#define __late_set_fixmap(idx, phys, flags) __set_fixmap(idx, phys, flags)
+#define __late_clear_fixmap(idx) __set_fixmap(idx, 0, __pgprot(0))
+
+void __early_set_fixmap(enum fixed_addresses idx,
+ phys_addr_t phys, pgprot_t flags);
+
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_X86_FIXMAP_H */
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 91d9c69a629e..b8237d8a1e0c 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -39,6 +39,7 @@
#include <linux/string.h>
#include <linux/compiler.h>
#include <asm/page.h>
+#include <asm/early_ioremap.h>
#define build_mmio_read(name, size, type, reg, barrier) \
static inline type name(const volatile void __iomem *addr) \
@@ -316,19 +317,6 @@ extern int ioremap_change_attr(unsigned long vaddr, unsigned long size,
unsigned long prot_val);
extern void __iomem *ioremap_wc(resource_size_t offset, unsigned long size);
-/*
- * early_ioremap() and early_iounmap() are for temporary early boot-time
- * mappings, before the real ioremap() is functional.
- * A boot-time mapping is currently limited to at most 16 pages.
- */
-extern void early_ioremap_init(void);
-extern void early_ioremap_reset(void);
-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);
-extern void fixup_early_ioremap(void);
extern bool is_early_ioremap_ptep(pte_t *ptep);
#ifdef CONFIG_XEN
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 94220d14d5cc..851bcdc5db04 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -52,7 +52,7 @@
* Compared to the generic __my_cpu_offset version, the following
* saves one instruction and avoids clobbering a temp register.
*/
-#define __this_cpu_ptr(ptr) \
+#define raw_cpu_ptr(ptr) \
({ \
unsigned long tcp_ptr__; \
__verify_pcpu_ptr(ptr); \
@@ -362,25 +362,25 @@ do { \
*/
#define this_cpu_read_stable(var) percpu_from_op("mov", var, "p" (&(var)))
-#define __this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
-#define __this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
-#define __this_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
-
-#define __this_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
-#define __this_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
-#define __this_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
-#define __this_cpu_add_1(pcp, val) percpu_add_op((pcp), val)
-#define __this_cpu_add_2(pcp, val) percpu_add_op((pcp), val)
-#define __this_cpu_add_4(pcp, val) percpu_add_op((pcp), val)
-#define __this_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
-#define __this_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
-#define __this_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
-#define __this_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
-#define __this_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
-#define __this_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
-#define __this_cpu_xchg_1(pcp, val) percpu_xchg_op(pcp, val)
-#define __this_cpu_xchg_2(pcp, val) percpu_xchg_op(pcp, val)
-#define __this_cpu_xchg_4(pcp, val) percpu_xchg_op(pcp, val)
+#define raw_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define raw_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define raw_cpu_read_4(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+
+#define raw_cpu_write_1(pcp, val) percpu_to_op("mov", (pcp), val)
+#define raw_cpu_write_2(pcp, val) percpu_to_op("mov", (pcp), val)
+#define raw_cpu_write_4(pcp, val) percpu_to_op("mov", (pcp), val)
+#define raw_cpu_add_1(pcp, val) percpu_add_op((pcp), val)
+#define raw_cpu_add_2(pcp, val) percpu_add_op((pcp), val)
+#define raw_cpu_add_4(pcp, val) percpu_add_op((pcp), val)
+#define raw_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
+#define raw_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
+#define raw_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
+#define raw_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
+#define raw_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
+#define raw_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
+#define raw_cpu_xchg_1(pcp, val) percpu_xchg_op(pcp, val)
+#define raw_cpu_xchg_2(pcp, val) percpu_xchg_op(pcp, val)
+#define raw_cpu_xchg_4(pcp, val) percpu_xchg_op(pcp, val)
#define this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
#define this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
@@ -401,16 +401,16 @@ do { \
#define this_cpu_xchg_2(pcp, nval) percpu_xchg_op(pcp, nval)
#define this_cpu_xchg_4(pcp, nval) percpu_xchg_op(pcp, nval)
-#define __this_cpu_add_return_1(pcp, val) percpu_add_return_op(pcp, val)
-#define __this_cpu_add_return_2(pcp, val) percpu_add_return_op(pcp, val)
-#define __this_cpu_add_return_4(pcp, val) percpu_add_return_op(pcp, val)
-#define __this_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define __this_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define __this_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
+#define raw_cpu_add_return_1(pcp, val) percpu_add_return_op(pcp, val)
+#define raw_cpu_add_return_2(pcp, val) percpu_add_return_op(pcp, val)
+#define raw_cpu_add_return_4(pcp, val) percpu_add_return_op(pcp, val)
+#define raw_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
+#define raw_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
+#define raw_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define this_cpu_add_return_1(pcp, val) percpu_add_return_op(pcp, val)
-#define this_cpu_add_return_2(pcp, val) percpu_add_return_op(pcp, val)
-#define this_cpu_add_return_4(pcp, val) percpu_add_return_op(pcp, val)
+#define this_cpu_add_return_1(pcp, val) percpu_add_return_op(pcp, val)
+#define this_cpu_add_return_2(pcp, val) percpu_add_return_op(pcp, val)
+#define this_cpu_add_return_4(pcp, val) percpu_add_return_op(pcp, val)
#define this_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
#define this_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
#define this_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
@@ -427,7 +427,7 @@ do { \
__ret; \
})
-#define __this_cpu_cmpxchg_double_4 percpu_cmpxchg8b_double
+#define raw_cpu_cmpxchg_double_4 percpu_cmpxchg8b_double
#define this_cpu_cmpxchg_double_4 percpu_cmpxchg8b_double
#endif /* CONFIG_X86_CMPXCHG64 */
@@ -436,22 +436,22 @@ do { \
* 32 bit must fall back to generic operations.
*/
#ifdef CONFIG_X86_64
-#define __this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
-#define __this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
-#define __this_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
-#define __this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
-#define __this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
-#define __this_cpu_add_return_8(pcp, val) percpu_add_return_op(pcp, val)
-#define __this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
-#define __this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-
-#define this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
-#define this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
-#define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
-#define this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
-#define this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
-#define this_cpu_add_return_8(pcp, val) percpu_add_return_op(pcp, val)
-#define this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
+#define raw_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define raw_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
+#define raw_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
+#define raw_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
+#define raw_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
+#define raw_cpu_add_return_8(pcp, val) percpu_add_return_op(pcp, val)
+#define raw_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
+#define raw_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
+
+#define this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
+#define this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)
+#define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
+#define this_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
+#define this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
+#define this_cpu_add_return_8(pcp, val) percpu_add_return_op(pcp, val)
+#define this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
#define this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
/*
@@ -474,7 +474,7 @@ do { \
__ret; \
})
-#define __this_cpu_cmpxchg_double_8 percpu_cmpxchg16b_double
+#define raw_cpu_cmpxchg_double_8 percpu_cmpxchg16b_double
#define this_cpu_cmpxchg_double_8 percpu_cmpxchg16b_double
#endif
@@ -495,9 +495,9 @@ static __always_inline int x86_this_cpu_constant_test_bit(unsigned int nr,
unsigned long __percpu *a = (unsigned long *)addr + nr / BITS_PER_LONG;
#ifdef CONFIG_X86_64
- return ((1UL << (nr % BITS_PER_LONG)) & __this_cpu_read_8(*a)) != 0;
+ return ((1UL << (nr % BITS_PER_LONG)) & raw_cpu_read_8(*a)) != 0;
#else
- return ((1UL << (nr % BITS_PER_LONG)) & __this_cpu_read_4(*a)) != 0;
+ return ((1UL << (nr % BITS_PER_LONG)) & raw_cpu_read_4(*a)) != 0;
#endif
}
diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
index c8b051933b1b..7024c12f7bfe 100644
--- a/arch/x86/include/asm/preempt.h
+++ b/arch/x86/include/asm/preempt.h
@@ -19,12 +19,12 @@ DECLARE_PER_CPU(int, __preempt_count);
*/
static __always_inline int preempt_count(void)
{
- return __this_cpu_read_4(__preempt_count) & ~PREEMPT_NEED_RESCHED;
+ return raw_cpu_read_4(__preempt_count) & ~PREEMPT_NEED_RESCHED;
}
static __always_inline void preempt_count_set(int pc)
{
- __this_cpu_write_4(__preempt_count, pc);
+ raw_cpu_write_4(__preempt_count, pc);
}
/*
@@ -53,17 +53,17 @@ static __always_inline void preempt_count_set(int pc)
static __always_inline void set_preempt_need_resched(void)
{
- __this_cpu_and_4(__preempt_count, ~PREEMPT_NEED_RESCHED);
+ raw_cpu_and_4(__preempt_count, ~PREEMPT_NEED_RESCHED);
}
static __always_inline void clear_preempt_need_resched(void)
{
- __this_cpu_or_4(__preempt_count, PREEMPT_NEED_RESCHED);
+ raw_cpu_or_4(__preempt_count, PREEMPT_NEED_RESCHED);
}
static __always_inline bool test_preempt_need_resched(void)
{
- return !(__this_cpu_read_4(__preempt_count) & PREEMPT_NEED_RESCHED);
+ return !(raw_cpu_read_4(__preempt_count) & PREEMPT_NEED_RESCHED);
}
/*
@@ -72,12 +72,12 @@ static __always_inline bool test_preempt_need_resched(void)
static __always_inline void __preempt_count_add(int val)
{
- __this_cpu_add_4(__preempt_count, val);
+ raw_cpu_add_4(__preempt_count, val);
}
static __always_inline void __preempt_count_sub(int val)
{
- __this_cpu_add_4(__preempt_count, -val);
+ raw_cpu_add_4(__preempt_count, -val);
}
/*
@@ -95,7 +95,7 @@ static __always_inline bool __preempt_count_dec_and_test(void)
*/
static __always_inline bool should_resched(void)
{
- return unlikely(!__this_cpu_read_4(__preempt_count));
+ return unlikely(!raw_cpu_read_4(__preempt_count));
}
#ifdef CONFIG_PREEMPT
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 799580cabc78..597ac155c91c 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -328,17 +328,6 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
return;
}
-static int __initdata early_ioremap_debug;
-
-static int __init early_ioremap_debug_setup(char *str)
-{
- early_ioremap_debug = 1;
-
- return 0;
-}
-early_param("early_ioremap_debug", early_ioremap_debug_setup);
-
-static __initdata int after_paging_init;
static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss;
static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
@@ -362,18 +351,11 @@ bool __init is_early_ioremap_ptep(pte_t *ptep)
return ptep >= &bm_pte[0] && ptep < &bm_pte[PAGE_SIZE/sizeof(pte_t)];
}
-static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;
-
void __init early_ioremap_init(void)
{
pmd_t *pmd;
- int i;
- if (early_ioremap_debug)
- printk(KERN_INFO "early_ioremap_init()\n");
-
- for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
- slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
+ early_ioremap_setup();
pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
memset(bm_pte, 0, sizeof(bm_pte));
@@ -402,13 +384,8 @@ void __init early_ioremap_init(void)
}
}
-void __init early_ioremap_reset(void)
-{
- after_paging_init = 1;
-}
-
-static void __init __early_set_fixmap(enum fixed_addresses idx,
- phys_addr_t phys, pgprot_t flags)
+void __init __early_set_fixmap(enum fixed_addresses idx,
+ phys_addr_t phys, pgprot_t flags)
{
unsigned long addr = __fix_to_virt(idx);
pte_t *pte;
@@ -425,198 +402,3 @@ static void __init __early_set_fixmap(enum fixed_addresses idx,
pte_clear(&init_mm, addr, pte);
__flush_tlb_one(addr);
}
-
-static inline void __init early_set_fixmap(enum fixed_addresses idx,
- phys_addr_t phys, pgprot_t prot)
-{
- if (after_paging_init)
- __set_fixmap(idx, phys, prot);
- else
- __early_set_fixmap(idx, phys, prot);
-}
-
-static inline void __init early_clear_fixmap(enum fixed_addresses idx)
-{
- if (after_paging_init)
- clear_fixmap(idx);
- else
- __early_set_fixmap(idx, 0, __pgprot(0));
-}
-
-static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
-static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
-
-void __init fixup_early_ioremap(void)
-{
- int i;
-
- for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
- if (prev_map[i]) {
- WARN_ON(1);
- break;
- }
- }
-
- early_ioremap_init();
-}
-
-static int __init check_early_ioremap_leak(void)
-{
- int count = 0;
- int i;
-
- for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
- if (prev_map[i])
- count++;
-
- if (!count)
- return 0;
- WARN(1, KERN_WARNING
- "Debug warning: early ioremap leak of %d areas detected.\n",
- count);
- printk(KERN_WARNING
- "please boot with early_ioremap_debug and report the dmesg.\n");
-
- return 1;
-}
-late_initcall(check_early_ioremap_leak);
-
-static void __init __iomem *
-__early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot)
-{
- unsigned long offset;
- resource_size_t last_addr;
- unsigned int nrpages;
- enum fixed_addresses idx;
- int i, slot;
-
- WARN_ON(system_state != SYSTEM_BOOTING);
-
- slot = -1;
- for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
- if (!prev_map[i]) {
- slot = i;
- break;
- }
- }
-
- if (slot < 0) {
- printk(KERN_INFO "%s(%08llx, %08lx) not found slot\n",
- __func__, (u64)phys_addr, size);
- WARN_ON(1);
- return NULL;
- }
-
- if (early_ioremap_debug) {
- printk(KERN_INFO "%s(%08llx, %08lx) [%d] => ",
- __func__, (u64)phys_addr, size, slot);
- dump_stack();
- }
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr) {
- WARN_ON(1);
- return NULL;
- }
-
- prev_size[slot] = size;
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr + 1) - phys_addr;
-
- /*
- * Mappings have to fit in the FIX_BTMAP area.
- */
- nrpages = size >> PAGE_SHIFT;
- if (nrpages > NR_FIX_BTMAPS) {
- WARN_ON(1);
- return NULL;
- }
-
- /*
- * Ok, go for it..
- */
- idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
- while (nrpages > 0) {
- early_set_fixmap(idx, phys_addr, prot);
- phys_addr += PAGE_SIZE;
- --idx;
- --nrpages;
- }
- if (early_ioremap_debug)
- printk(KERN_CONT "%08lx + %08lx\n", offset, slot_virt[slot]);
-
- prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]);
- return prev_map[slot];
-}
-
-/* Remap an IO device */
-void __init __iomem *
-early_ioremap(resource_size_t phys_addr, unsigned long size)
-{
- return __early_ioremap(phys_addr, size, PAGE_KERNEL_IO);
-}
-
-/* Remap memory */
-void __init __iomem *
-early_memremap(resource_size_t phys_addr, unsigned long size)
-{
- return __early_ioremap(phys_addr, size, PAGE_KERNEL);
-}
-
-void __init early_iounmap(void __iomem *addr, unsigned long size)
-{
- unsigned long virt_addr;
- unsigned long offset;
- unsigned int nrpages;
- enum fixed_addresses idx;
- int i, slot;
-
- slot = -1;
- for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
- if (prev_map[i] == addr) {
- slot = i;
- break;
- }
- }
-
- if (slot < 0) {
- printk(KERN_INFO "early_iounmap(%p, %08lx) not found slot\n",
- addr, size);
- WARN_ON(1);
- return;
- }
-
- if (prev_size[slot] != size) {
- printk(KERN_INFO "early_iounmap(%p, %08lx) [%d] size not consistent %08lx\n",
- addr, size, slot, prev_size[slot]);
- WARN_ON(1);
- return;
- }
-
- if (early_ioremap_debug) {
- printk(KERN_INFO "early_iounmap(%p, %08lx) [%d]\n", addr,
- size, slot);
- dump_stack();
- }
-
- virt_addr = (unsigned long)addr;
- if (virt_addr < fix_to_virt(FIX_BTMAP_BEGIN)) {
- WARN_ON(1);
- return;
- }
- offset = virt_addr & ~PAGE_MASK;
- nrpages = PAGE_ALIGN(offset + size) >> PAGE_SHIFT;
-
- idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot;
- while (nrpages > 0) {
- early_clear_fixmap(idx);
- --idx;
- --nrpages;
- }
- prev_map[slot] = NULL;
-}
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index a69bcb8c7621..4dd8cf652579 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -127,7 +127,7 @@ static int __init parse_reservetop(char *arg)
address = memparse(arg, &arg);
reserve_top_address(address);
- fixup_early_ioremap();
+ early_ioremap_init();
return 0;
}
early_param("reservetop", parse_reservetop);