Messages in this thread |  | | From | Thomas Gleixner <> | Subject | Re: [patch 02/38] x86/cpu: Use native_wrmsrl() in load_percpu_segment() | Date | Sun, 17 Jul 2022 22:13:10 +0200 |
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On Sun, Jul 17 2022 at 22:08, Thomas Gleixner wrote: > On Sun, Jul 17 2022 at 21:08, Thomas Gleixner wrote: > loadsegment_simple() was a red herring. The gs segment is already zero. > > So what explodes here is the early boot when switching from early per > CPU to the real per CPU area. > > start_kernel() > ..... > setup_per_cpu_areas(); > smp_prepare_boot_cpu()
Bah. switch_to_new_gdt() is already invoked from setup_per_cpu_areas() and then again in smp_prepare_boot_cpu() and once more in cpu_init(),
What a mess.
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