On Thu, 2017-05-25 at 19:01 -0700, Andy Lutomirski wrote:
> On Thu, May 25, 2017 at 6:39 PM, Rik van Riel
> wrote:
> > On Thu, 2017-05-25 at 17:47 -0700, Andy Lutomirski wrote:
> > >
> > > +++ b/arch/x86/mm/tlb.c
> > > @@ -311,7 +311,7 @@ void flush_tlb_mm_range(struct mm_struct *mm,
> > > unsign
On Thu, May 25, 2017 at 6:39 PM, Rik van Riel wrote:
> On Thu, 2017-05-25 at 17:47 -0700, Andy Lutomirski wrote:
>>
>> +++ b/arch/x86/mm/tlb.c
>> @@ -311,7 +311,7 @@ void flush_tlb_mm_range(struct mm_struct *mm,
>> unsigned long start,
>> goto out;
>> }
>>
>> - if (!current
> On May 25, 2017, at 5:47 PM, Andy Lutomirski wrote:
>
> On a remote TLB flush, we leave_mm() if we're TLBSTATE_LAZY. For a
> local flush_tlb_mm_range(), we leave_mm() if !current->mm. These
> are approximately the same condition -- the scheduler sets lazy TLB
> mode when switching to a threa
On Thu, 2017-05-25 at 17:47 -0700, Andy Lutomirski wrote:
>
> +++ b/arch/x86/mm/tlb.c
> @@ -311,7 +311,7 @@ void flush_tlb_mm_range(struct mm_struct *mm,
> unsigned long start,
> goto out;
> }
>
> - if (!current->mm) {
> + if (this_cpu_read(cpu_tlbstate.state) != TLBS
On a remote TLB flush, we leave_mm() if we're TLBSTATE_LAZY. For a
local flush_tlb_mm_range(), we leave_mm() if !current->mm. These
are approximately the same condition -- the scheduler sets lazy TLB
mode when switching to a thread with no mm.
I'm about to merge the local and remote flush code,
5 matches
Mail list logo
