Thomas Gleixner 8f849ff63b x86/microcode: Handle "offline" CPUs correctly ... Offline CPUs need to be parked in a safe loop when microcode update is in progress on the primary CPU. Currently, offline CPUs are parked in mwait_play_dead(), and for Intel CPUs, its not a safe instruction, because the MWAIT instruction can be patched in the new microcode update that can cause instability. - Add a new microcode state 'UCODE_OFFLINE' to report status on per-CPU basis. - Force NMI on the offline CPUs. Wake up offline CPUs while the update is in progress and then return them back to mwait_play_dead() after microcode update is complete. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20231002115903.660850472@linutronix.de		2023-10-24 15:05:55 +02:00
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asm	x86/microcode: Handle "offline" CPUs correctly	2023-10-24 15:05:55 +02:00
uapi/asm	x86: Remove the arch_calc_vm_prot_bits() macro from the UAPI	2023-09-06 23:50:46 +02:00