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path: root/arch/x86_64/kernel/trampoline.S
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2007-05-02[PATCH] x86-64: Move cpu verification code to common fileVivek Goyal
o This patch moves the code to verify long mode and SSE to a common file. This code is now shared by trampoline.S, wakeup.S, boot/setup.S and boot/compressed/head.S o So far we used to do very limited check in trampoline.S, wakeup.S and in 32bit entry point. Now all the entry paths are forced to do the exhaustive check, including SSE because verify_cpu is shared. o I am keeping this patch as last in the x86 relocatable series because previous patches have got quite some amount of testing done and don't want to distrub that. So that if there is problem introduced by this patch, at least it can be easily isolated. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de>
2007-05-02[PATCH] x86-64: 64bit PIC SMP trampolineVivek Goyal
This modifies the SMP trampoline and all of the associated code so it can jump to a 64bit kernel loaded at an arbitrary address. The dependencies on having an idenetity mapped page in the kernel page tables for SMP bootup have all been removed. In addition the trampoline has been modified to verify that long mode is supported. Asking if long mode is implemented is down right silly but we have traditionally had some of these checks, and they can't hurt anything. So when the totally ludicrous happens we just might handle it correctly. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26[PATCH] Fix gdt table size in trampoline.SEric W. Biederman
Allows easier extension of the GDT by using the proper C symbol for the size in the descriptor. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andi Kleen <ak@suse.de>
2006-01-11[PATCH] x86_64: Fix SMP bootup with CONFIG_KDUMP enabledVivek Goyal
o This fix was posted for i386 long back. Posting it for x86_64. http://marc.theaimsgroup.com/?l=linux-kernel&m=110380103229830&w=2 o This patch fixes the problem of secondary cpus boot up. This situation is faced when kernel is built for default locations like 16MB and onwards. In this configuration, only primary cpu (BP) comes and secondary cpus don't boot. o Problem occurs because in trampoline code, lgdt is not able to load the GDT as it happens to be situated beyond 16MB. This is due to the fact that cpu is still in real mode and default operand size is 16bit. o This patch uses lgdtl instead of lgdt to force operand size to 32 instead of 16. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!