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| author | Shaohua Li <shaohua.li@intel.com> | 2006-06-27 02:53:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-27 17:32:37 -0700 |
| commit | bd9e0b74f52dbac6241643fadca2393808b14c7a (patch) | |
| tree | af2c479782edbeca009cf195401d82abb61b1ac7 /arch/i386/kernel/cpu/common.c | |
| parent | 28eba5bf9d4bf3ba4d58d985abf3a2903b7f2125 (diff) | |
| download | kernel_samsung_tuna-bd9e0b74f52dbac6241643fadca2393808b14c7a.zip kernel_samsung_tuna-bd9e0b74f52dbac6241643fadca2393808b14c7a.tar.gz kernel_samsung_tuna-bd9e0b74f52dbac6241643fadca2393808b14c7a.tar.bz2 | |
[PATCH] x86: cpu_init(): avoid GFP_KERNEL allocation while atomic
The patch fixes two issues:
1. cpu_init is called with interrupt disabled. Allocating gdt table
there isn't good at runtime.
2. gdt table page cause memory leak in CPU hotplug case.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/cpu/common.c')
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 44f2c5f..640364d 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -613,6 +613,12 @@ void __cpuinit cpu_init(void) set_in_cr4(X86_CR4_TSD); } + /* The CPU hotplug case */ + if (cpu_gdt_descr->address) { + gdt = (struct desc_struct *)cpu_gdt_descr->address; + memset(gdt, 0, PAGE_SIZE); + goto old_gdt; + } /* * This is a horrible hack to allocate the GDT. The problem * is that cpu_init() is called really early for the boot CPU @@ -631,7 +637,7 @@ void __cpuinit cpu_init(void) local_irq_enable(); } } - +old_gdt: /* * Initialize the per-CPU GDT with the boot GDT, * and set up the GDT descriptor: |