Messages in this thread | | | Date | Thu, 14 May 2015 15:13:27 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [RFC PATCH] x86, espfix: use spin_lock rather than mutex |
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On 05/14/2015 02:27 PM, Borislav Petkov wrote: > Remove stable@ from CC. > > On Thu, May 14, 2015 at 08:29:55PM +0200, Ingo Molnar wrote: >> We could allocate them on the boot CPU side and hand them over to the >> secondary CPU. > > Yeah, something along those lines. I mean, they're allocated and in-use > during the complete system lifetime, we might just as well allocate them > all in one go. Btw, what's our allocator that early, memblock? > > Still, what I find strange is why are we seeing this only now? Is it > because it had to be a big box (cpu >= 128) or something else changed...? >
Quite probable. You don't really want to allocate them until you know if a CPU at least exists, though.
I like Ingo's suggestion of allocating them before CPU bringup on the initiating CPU.
-hpa
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