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| author | Yinghai Lu <yinghai@kernel.org> | 2012-11-16 19:39:23 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-11-17 11:59:51 -0800 |
| commit | 9710f581bb4c35589ac046b0cfc0deb7f369fc85 (patch) | |
| tree | d812925de02770a064770bfab60b1769a5d70360 /arch/x86/kernel/e820.c | |
| parent | 600cc5b7f6371706679490d7ee108015ae57ac2f (diff) | |
| download | linux-9710f581bb4c35589ac046b0cfc0deb7f369fc85.tar.bz2 | |
x86, mm: Let "memmap=" take more entries one time
Current "memmap=" only can take one entry every time.
when we have more entries, we have to use memmap= for each of them.
For pxe booting, we have command line length limitation, those extra
"memmap=" would waste too much space.
This patch make memmap= could take several entries one time,
and those entries will be split with ','
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1353123563-3103-47-git-send-email-yinghai@kernel.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/e820.c')
| -rw-r--r-- | arch/x86/kernel/e820.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index df06ade26bef..d32abeabbda5 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -835,7 +835,7 @@ static int __init parse_memopt(char *p) } early_param("mem", parse_memopt); -static int __init parse_memmap_opt(char *p) +static int __init parse_memmap_one(char *p) { char *oldp; u64 start_at, mem_size; @@ -877,6 +877,20 @@ static int __init parse_memmap_opt(char *p) return *p == '\0' ? 0 : -EINVAL; } +static int __init parse_memmap_opt(char *str) +{ + while (str) { + char *k = strchr(str, ','); + + if (k) + *k++ = 0; + + parse_memmap_one(str); + str = k; + } + + return 0; +} early_param("memmap", parse_memmap_opt); void __init finish_e820_parsing(void) |