Re: [PATCH 01/10] x86/spec-ctrl: Remove conditional IRQs-on-ness for INT $0x80/0x82 paths

2023-11-14 Thread Krystian Hebel
Please ignore this series and review/reply to the other one ([XEN PATCH 0/9] x86: parallelize AP bring-up during boot) instead. `git send-email` did what I asked it to do instead of what I wanted, so I accidentally sent WIP version of patches. Sorry for the noise. -- Krystian Hebel Firmware

[PATCH 01/10] x86/spec-ctrl: Remove conditional IRQs-on-ness for INT $0x80/0x82 paths

2023-11-14 Thread Krystian Hebel
From: Andrew Cooper Before speculation defences, some paths in Xen could genuinely get away with being IRQs-on at entry. But XPTI invalidated this property on most paths, and attempting to maintain it on the remaining paths was a mistake. Fast forward, and DO_SPEC_CTRL_COND_IBPB (protection