On 03/07/2018 09:30 AM, Greg Kroah-Hartman wrote: > On Fri, Mar 02, 2018 at 01:32:09PM -0800, Tim Chen wrote: >> From: Andy Lutomirski <luto@xxxxxxxxxx> >> commit: f39681ed0f48498b80455095376f11535feea332 >> >> This adds a new variable to mmu_context_t: ctx_id. >> ctx_id uniquely identifies the mm_struct and will never be reused. >> >> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx> >> Reviewed-by: Nadav Amit <nadav.amit@xxxxxxxxx> >> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> >> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> >> Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> >> Cc: Borislav Petkov <bp@xxxxxxxxx> >> Cc: Dave Hansen <dave.hansen@xxxxxxxxx> >> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> >> Cc: Mel Gorman <mgorman@xxxxxxx> >> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> >> Cc: Rik van Riel <riel@xxxxxxxxxx> >> Cc: linux-mm@xxxxxxxxx >> Link: http://lkml.kernel.org/r/413a91c24dab3ed0caa5f4e4d017d87b0857f920.1498751203.git.luto@xxxxxxxxxx >> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> >> Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> >> --- >> arch/x86/include/asm/mmu.h | 15 +++++++++++++-- >> arch/x86/include/asm/mmu_context.h | 5 +++++ >> arch/x86/mm/tlb.c | 2 ++ >> 3 files changed, 20 insertions(+), 2 deletions(-) >> > > Does not apply to 4.4.y :( > > Can you provide a working backport for that tree? > Okay. Will do. Thanks. Tim