This fixes a 32-bit boot warning, a 32-bit boot oddity that seems unsymtomatic right now, and a potential userspace corruption issue across EFI calls if PCID is enabled.
With this series applied, the only remaining issue I'm aware of is the paging-structure cache laziness problem. I've tested SMP boot, suspend/resume, hotplug/unplug, and hibernate on a 32-bit VM, a 64-bit VM, and a 64-bit laptop. (Except hibernate on the laptop -- my laptop can't resume from hibernation on *any* kernel due to a userspace (systemd? Fedora overall integration?) issue.) Andy Lutomirski (4): x86/mm: Factor out CR3-building code x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs arch/x86/include/asm/mmu_context.h | 32 ++++++++++++++++++++++++++++---- arch/x86/kernel/cpu/bugs.c | 8 -------- arch/x86/kernel/cpu/common.c | 8 ++++++++ arch/x86/kernel/smpboot.c | 13 +++++++------ arch/x86/mm/tlb.c | 11 +++++------ 5 files changed, 48 insertions(+), 24 deletions(-) -- 2.13.5
