lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86-32: compute initial mapping size more accurately

Browse Source 
Impact: simplification

We only need to map the kernel in head_32.S, not the whole of
lowmem.  We use 512MB as a reasonable (but arbitrary) limit on
the maximum size of the kernel image.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu
2009-03-12 16:04:42 -07:00
committed by H. Peter Anvin
parent 6de6cb442e
commit 7543c1de84
2 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/head_32.S
View File

@@ -54,7 +54,7 @@
*
* This should be a multiple of a page.
*/
LOW_PAGES = 1<<(32-PAGE_SHIFT_asm)
LOW_PAGES = (KERNEL_IMAGE_SIZE + PAGE_SIZE_asm - 1)>>PAGE_SHIFT
/*
* To preserve the DMA pool in PAGEALLOC kernels, we'll allocate