Andy Lutomirski ce27374fab x86/mm: Make flush_tlb_mm_range() more predictable ... I'm about to rewrite the function almost completely, but first I want to get a functional change out of the way. Currently, if flush_tlb_mm_range() does not flush the local TLB at all, it will never do individual page flushes on remote CPUs. This seems to be an accident, and preserving it will be awkward. Let's change it first so that any regressions in the rewrite will be easier to bisect and so that the rewrite can attempt to change no visible behavior at all. The fix is simple: we can simply avoid short-circuiting the calculation of base_pages_to_flush. As a side effect, this also eliminates a potential corner case: if tlb_single_page_flush_ceiling == TLB_FLUSH_ALL, flush_tlb_mm_range() could have ended up flushing the entire address space one page at a time. Signed-off-by: Andy Lutomirski <luto@kernel.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nadav Amit <namit@vmware.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/4b29b771d9975aad7154c314534fec235618175a.1492844372.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-04-26 10:02:06 +02:00
..
boot	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
configs	x86/build/x86_64_defconfig: Enable CONFIG_R8169	2017-03-06 11:47:43 +01:00
crypto
entry	x86/asm: Remove __VIRTUAL_MASK_SHIFT==47 assert	2017-04-04 08:22:33 +02:00
events	sched/clock, x86/perf: Fix "perf test tsc"	2017-03-23 07:31:49 +01:00
hyperv	x86/hyperv: Hide unused label	2017-03-01 10:51:40 +01:00
ia32	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
include	x86/mm: Remove flush_tlb() and flush_tlb_current_task()	2017-04-26 10:02:06 +02:00
kernel	x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly()	2017-04-26 10:02:06 +02:00
kvm	Linux 4.11-rc5	2017-04-03 16:36:32 +02:00
lguest
lib	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
math-emu
mm	x86/mm: Make flush_tlb_mm_range() more predictable	2017-04-26 10:02:06 +02:00
net
oprofile
pci	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
platform	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
power	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
purgatory	kasan: do not sanitize kexec purgatory	2017-03-31 17:13:30 -07:00
ras
realmode
tools
um	um/arch_prctl: Fix fallout from x86 arch_prctl() rework	2017-03-21 10:08:29 +01:00
video
xen	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
.gitignore
Kbuild
Kconfig	Revert "x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation"	2017-04-23 11:45:20 +02:00
Kconfig.cpu
Kconfig.debug	mm: add arch-independent testcases for RODATA	2017-02-27 18:43:48 -08:00
Makefile	x86/build: Mostly disable '-maccumulate-outgoing-args'	2017-03-30 11:53:04 +02:00
Makefile_32.cpu	x86/build: Mostly disable '-maccumulate-outgoing-args'	2017-03-30 11:53:04 +02:00
Makefile.um