This is a note to let you know that I've just added the patch titled sparc64: combine activate_mm and switch_mm to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: sparc64-combine-activate_mm-and-switch_mm.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Thu Jun 8 08:58:43 CEST 2017 From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Date: Wed, 31 May 2017 11:25:21 -0400 Subject: sparc64: combine activate_mm and switch_mm From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> [ Upstream commit 14d0334c6748ff2aedb3f2f7fdc51ee90a9b54e7 ] The only difference between these two functions is that in activate_mm we unconditionally flush context. However, there is no need to keep this difference after fixing a bug where cpumask was not reset on a wrap. So, in this patch we combine these. Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Reviewed-by: Bob Picco <bob.picco@xxxxxxxxxx> Reviewed-by: Steven Sistare <steven.sistare@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/sparc/include/asm/mmu_context_64.h | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) --- a/arch/sparc/include/asm/mmu_context_64.h +++ b/arch/sparc/include/asm/mmu_context_64.h @@ -133,26 +133,7 @@ static inline void switch_mm(struct mm_s } #define deactivate_mm(tsk,mm) do { } while (0) - -/* Activate a new MM instance for the current task. */ -static inline void activate_mm(struct mm_struct *active_mm, struct mm_struct *mm) -{ - unsigned long flags; - int cpu; - - spin_lock_irqsave(&mm->context.lock, flags); - if (!CTX_VALID(mm->context)) - get_new_mmu_context(mm); - cpu = smp_processor_id(); - if (!cpumask_test_cpu(cpu, mm_cpumask(mm))) - cpumask_set_cpu(cpu, mm_cpumask(mm)); - - load_secondary_context(mm); - __flush_tlb_mm(CTX_HWBITS(mm->context), SECONDARY_CONTEXT); - tsb_context_switch(mm); - spin_unlock_irqrestore(&mm->context.lock, flags); -} - +#define activate_mm(active_mm, mm) switch_mm(active_mm, mm, NULL) #endif /* !(__ASSEMBLY__) */ #endif /* !(__SPARC64_MMU_CONTEXT_H) */ Patches currently in stable-queue which might be from pasha.tatashin@xxxxxxxxxx are queue-4.11/sparc64-new-context-wrap.patch queue-4.11/sparc64-combine-activate_mm-and-switch_mm.patch queue-4.11/sparc64-add-per-cpu-mm-of-secondary-contexts.patch queue-4.11/sparc64-reset-mm-cpumask-after-wrap.patch queue-4.11/sparc64-redefine-first-version.patch queue-4.11/sparc64-delete-old-wrap-code.patch