On 2/3/25 12:09, Kirill A. Shutemov wrote: ... > But Sean's proposal with HLT check before enabling interrupts looks better > to me. "Sean's proposal" being this: https://lore.kernel.org/all/Z5l6L3Hen9_Y3SGC@xxxxxxxxxx/ ? Is that just intended to quietly fix up a hlt-induced #VE? I'm not sure that's a good idea. The TDVMCALL is slow, but the #VE is also presumably quite slow. This is (presumably) getting called in an idle path which is actually one of the most performance-sensitive things we have in the kernel. Or am I missing the point of Sean's proposal? I don't mind having the #VE handler warn about the situation if we end up there accidentally. I'd much rather have a kernel configured in a way that we are pretty sure there's no path to even call hlt.
