Hi Ingo, etc: Patches 1 and 2 fix boot regressions. Patch 1 needs to be backported. Patch 2 doesn't because the regression is new in 4.8 (although it's probably unobservable because the regression fixed in patch 1 also prevented bootup on affected CPUs).
Patch 3 cleans the whole mess up. It's probably not 4.8 material, but I'm sending it as part of this series for ease of review. If you like, you could apply patches 1 and 2 to x86/urgent, merge into x86/asm, and apply patch 3 on top. Andy Lutomirski (3): x86/init: Fix cr4_init_shadow() on CR4-less machines x86/boot: Fix another __read_cr4() case on 486 x86/asm: Get rid of __read_cr4_safe() arch/x86/include/asm/paravirt.h | 4 ---- arch/x86/include/asm/paravirt_types.h | 1 - arch/x86/include/asm/special_insns.h | 22 +++++++--------------- arch/x86/kernel/paravirt.c | 1 - arch/x86/kernel/process_32.c | 2 +- arch/x86/kernel/setup.c | 9 +++++++-- arch/x86/power/cpu.c | 2 +- arch/x86/xen/enlighten.c | 1 - 8 files changed, 16 insertions(+), 26 deletions(-) -- 2.7.4
