Commit-ID: d54368127a11c6da0776c109a4c65a7b6a815f32 Gitweb: http://git.kernel.org/tip/d54368127a11c6da0776c109a4c65a7b6a815f32 Author: Andy Lutomirski <l...@kernel.org> AuthorDate: Tue, 20 Jun 2017 22:22:09 -0700 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 22 Jun 2017 10:57:50 +0200
x86/mm: Remove reset_lazy_tlbstate() The only call site also calls idle_task_exit(), and idle_task_exit() puts us into a clean state by explicitly switching to init_mm. Signed-off-by: Andy Lutomirski <l...@kernel.org> Reviewed-by: Rik van Riel <r...@redhat.com> Reviewed-by: Thomas Gleixner <t...@linutronix.de> Reviewed-by: Borislav Petkov <b...@suse.de> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Arjan van de Ven <ar...@linux.intel.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Dave Hansen <dave.han...@intel.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Mel Gorman <mgor...@suse.de> Cc: Nadav Amit <nadav.a...@gmail.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: linux...@kvack.org Link: http://lkml.kernel.org/r/3acc7ad02a2ec060d2321a1e0f6de1cb90069517.1498022414.git.l...@kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/include/asm/tlbflush.h | 8 -------- arch/x86/kernel/smpboot.c | 1 - 2 files changed, 9 deletions(-) diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h index 5f78c6a..50ea348 100644 --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -259,14 +259,6 @@ void native_flush_tlb_others(const struct cpumask *cpumask, #define TLBSTATE_OK 1 #define TLBSTATE_LAZY 2 -static inline void reset_lazy_tlbstate(void) -{ - this_cpu_write(cpu_tlbstate.state, 0); - this_cpu_write(cpu_tlbstate.loaded_mm, &init_mm); - - WARN_ON(read_cr3_pa() != __pa_symbol(swapper_pg_dir)); -} - static inline void arch_tlbbatch_add_mm(struct arch_tlbflush_unmap_batch *batch, struct mm_struct *mm) { diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index f04479a..6169a56 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1589,7 +1589,6 @@ void native_cpu_die(unsigned int cpu) void play_dead_common(void) { idle_task_exit(); - reset_lazy_tlbstate(); /* Ack it */ (void)cpu_report_death();
