From c11efdf94d3152443c11334720824bb6c7f6c655 Mon Sep 17 00:00:00 2001 From: Ravikiran G Thirumalai Date: Wed, 11 Jan 2006 22:43:57 +0100 Subject: [PATCH] x86_64: Align and pad x86_64 GDT on page boundary This patch is on the same lines as Zachary Amsden's i386 GDT page alignemnt patch in -mm, but for x86_64. Patch to align and pad x86_64 GDT on page boundries. [AK: some minor cleanups and fixed incorrect TLS initialization in CPU init.] Signed-off-by: Nippun Goel Signed-off-by: Ravikiran Thirumalai Signed-off-by: Shai Fultheim Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/smpboot.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/x86_64/kernel/smpboot.c') diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index f513dacc177..e6af93b51dc 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -744,6 +744,13 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid) }; DECLARE_WORK(work, do_fork_idle, &c_idle); + /* allocate memory for gdts of secondary cpus. Hotplug is considered */ + if (!cpu_gdt_descr[cpu].address && + !(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) { + printk(KERN_ERR "Failed to allocate GDT for CPU %d\n", cpu); + return -1; + } + c_idle.idle = get_idle_for_cpu(cpu); if (c_idle.idle) { -- cgit v1.2.3-18-g5258