Messages in this thread | | | Subject | RE: [PATCH v6 07/12] x86/head_32.S: Define start_cpu0 | From | "H. Peter Anvin" <> | Date | Thu, 10 May 2012 18:53:08 -0500 |
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I just meant: please check if there are any conflicts ..
"Yu, Fenghua" <fenghua.yu@intel.com> wrote:
>> -----Original Message----- >> From: H. Peter Anvin [mailto:hpa@zytor.com] >> Sent: Thursday, May 10, 2012 10:31 AM >> To: Yu, Fenghua; Ingo Molnar; Thomas Gleixner; Linus Torvalds; Andrew >> Morton; Mallick, Asit K; Luck, Tony; Arjan Dan De Ven; Siddha, Suresh >B; >> Brown, Len; Srivatssa S. Bhat; Randy Dunlap; Chen Gong; linux-kernel; >> linux-pm; x86 >> Subject: Re: [PATCH v6 07/12] x86/head_32.S: Define start_cpu0 >> >> Can you check how this interacts with tip:x86/realmode? > >When CPU0 is waken up by NMI, it's in protect mode and jumps to >start_cpu0() which only sets up stack and goes to initial_code. CPU0 >wake up doesn't go through trampline and starts from real mode. This is >different from waking up AP when AP goes through INIT/STARTUP sequence >and starts from real mode. > >Thanks. > >-Fenghua
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