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author | Ingo Molnar <mingo@kernel.org> | 2019-11-29 10:17:25 +0300 |
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committer | Ingo Molnar <mingo@kernel.org> | 2019-12-10 12:12:55 +0300 |
commit | 186525bd6b83efc592672e2d6185e4d7c810d2b4 (patch) | |
tree | 0fd5cb176e8e113a552730ea07dedbb8359e652b /mm/highmem.c | |
parent | 1f059dfdf5d170dccbac92193be2fee3c1763384 (diff) | |
download | linux-186525bd6b83efc592672e2d6185e4d7c810d2b4.tar.xz |
mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions
- Untangle the somewhat incestous way of how VMALLOC_START is used all across the
kernel, but is, on x86, defined deep inside one of the lowest level page table headers.
It doesn't help that vmalloc.h only includes a single asm header:
#include <asm/page.h> /* pgprot_t */
So there was no existing cross-arch way to decouple address layout
definitions from page.h details. I used this:
#ifndef VMALLOC_START
# include <asm/vmalloc.h>
#endif
This way every architecture that wants to simplify page.h can do so.
- Also on x86 we had a couple of LDT related inline functions that used
the late-stage address space layout positions - but these could be
uninlined without real trouble - the end result is cleaner this way as
well.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/highmem.c')
-rw-r--r-- | mm/highmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/highmem.c b/mm/highmem.c index 107b10f9878e..64d8dea47dd1 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -29,7 +29,7 @@ #include <linux/highmem.h> #include <linux/kgdb.h> #include <asm/tlbflush.h> - +#include <linux/vmalloc.h> #if defined(CONFIG_HIGHMEM) || defined(CONFIG_X86_32) DEFINE_PER_CPU(int, __kmap_atomic_idx); |