Commit-ID: d54368127a11c6da0776c109a4c65a7b6a815f32 Gitweb: http://git.kernel.org/tip/d54368127a11c6da0776c109a4c65a7b6a815f32 Author: Andy Lutomirski <[email protected]> AuthorDate: Tue, 20 Jun 2017 22:22:09 -0700 Committer: Ingo Molnar <[email protected]> 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 <[email protected]> Reviewed-by: Rik van Riel <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Reviewed-by: Borislav Petkov <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Arjan van de Ven <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brian Gerst <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Nadav Amit <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/3acc7ad02a2ec060d2321a1e0f6de1cb90069517.1498022414.git.l...@kernel.org Signed-off-by: Ingo Molnar <[email protected]> --- 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();
