Dave Woodhouse reported that we now nest calls to arch_enter_lazy_mmu_mode(). That was inadvertent, but in principle we should allow it. On further investigation, Juergen already fixed it for Xen, but didn't tell anyone. Fix it for Sparc & PowerPC too. This may or may not help fix the problem that Erhard reported.
Matthew Wilcox (Oracle) (2): powerpc: Allow nesting of lazy MMU mode sparc: Allow nesting of lazy MMU mode arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 5 ++--- arch/sparc/mm/tlb.c | 5 ++--- 2 files changed, 4 insertions(+), 6 deletions(-) -- 2.40.1