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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 08:44:24 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 08:44:24 -0700
commite3ebadd95cb621e2c7436f3d3646447ac9d5c16d (patch)
tree510b41550cc3751cfb565e3e2ba195a68b784a03 /arch/i386
parent15700770ef7c5d12e2f1659d2ddbeb3f658d9f37 (diff)
Revert "[PATCH] x86: __pa and __pa_symbol address space separation"
This was broken. It adds complexity, for no good reason. Rather than separate __pa() and __pa_symbol(), we should deprecate __pa_symbol(), and preferably __pa() too - and just use "virt_to_phys()" instead, which is more readable and has nicer semantics. However, right now, just undo the separation, and make __pa_symbol() be the exact same as __pa(). That fixes the bugs this patch introduced, and we can do the fairly obvious cleanups later. Do the new __phys_addr() function (which is now the actual workhorse for the unified __pa()/__pa_symbol()) as a real external function, that way all the potential issues with compile/link-time optimizations of constant symbol addresses go away, and we can also, if we choose to, add more sanity-checking of the argument. Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/i386')
-rw-r--r--arch/i386/kernel/alternative.c4
-rw-r--r--arch/i386/mm/init.c15
2 files changed, 9 insertions, 10 deletions
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c
index e5cec6685cc5..d8cda14fff8b 100644
--- a/arch/i386/kernel/alternative.c
+++ b/arch/i386/kernel/alternative.c
@@ -390,8 +390,8 @@ void __init alternative_instructions(void)
_text, _etext);
}
free_init_pages("SMP alternatives",
- __pa_symbol(&__smp_locks),
- __pa_symbol(&__smp_locks_end));
+ (unsigned long)__smp_locks,
+ (unsigned long)__smp_locks_end);
} else {
alternatives_smp_module_add(NULL, "core kernel",
__smp_locks, __smp_locks_end,
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index dbe16f63a566..1a7197e89eb4 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -843,11 +843,10 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
unsigned long addr;
for (addr = begin; addr < end; addr += PAGE_SIZE) {
- struct page *page = pfn_to_page(addr >> PAGE_SHIFT);
- ClearPageReserved(page);
- init_page_count(page);
- memset(page_address(page), POISON_FREE_INITMEM, PAGE_SIZE);
- __free_page(page);
+ ClearPageReserved(virt_to_page(addr));
+ init_page_count(virt_to_page(addr));
+ memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
+ free_page(addr);
totalram_pages++;
}
printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);
@@ -856,14 +855,14 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
void free_initmem(void)
{
free_init_pages("unused kernel memory",
- __pa_symbol(&__init_begin),
- __pa_symbol(&__init_end));
+ (unsigned long)(&__init_begin),
+ (unsigned long)(&__init_end));
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- free_init_pages("initrd memory", __pa(start), __pa(end));
+ free_init_pages("initrd memory", start, end);
}
#endif