Dan Williams 4369deaa2f generic/pgtable: Introduce set_pte_safe() ... Commit: f77084d963 "x86/mm/pat: Disable preemption around __flush_tlb_all()" introduced a warning to capture cases __flush_tlb_all() is called without pre-emption disabled. It triggers a false positive warning in the memory hotplug path. On investigation it was found that the __flush_tlb_all() calls are not necessary. However, they are only "not necessary" in practice provided the ptes are being initially populated from the !present state. Introduce set_pte_safe() as a sanity check that the pte is being updated in a way that does not require a TLB flush. Forgive the macro, the availability of the various of set_pte() levels is hit and miss across architectures. [ mingo: Minor readability edits. ] Suggested-by: Peter Zijlstra <peterz@infradead.org> Suggested-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rik van Riel <riel@surriel.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/279dadae-9148-465c-7ec6-3f37e026c6c9@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-12-05 09:03:06 +01:00
..
acpi	pci-v4.20-changes	2018-10-25 06:50:48 -07:00
asm-generic	generic/pgtable: Introduce set_pte_safe()	2018-12-05 09:03:06 +01:00
clocksource
crypto	KEYS: asym_tpm: extract key size & public key [ver #2]	2018-10-26 09:30:46 +01:00
drm	drm, i915, amdgpu, bridge + core quirk	2018-11-02 10:58:20 -07:00
dt-bindings	This time it looks like a quieter release cycle in the clk tree. I guess that's	2018-10-31 11:08:30 -07:00
keys	KEYS: Move trusted.h to include/keys [ver #2]	2018-10-26 09:30:47 +01:00
kvm
linux	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-11-11 16:41:50 -06:00
math-emu
media	media updates for v4.20-rc1	2018-10-31 10:53:29 -07:00
memory
misc
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2018-11-05 17:19:25 -08:00
pcmcia
ras
rdma	First merge window pull request	2018-10-26 07:38:19 -07:00
scsi
soc	ARM: SoC driver updates for 4.17	2018-10-29 15:16:01 -07:00
sound
target
trace	Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-11-01 19:58:52 -07:00
uapi	drm: i915, amdgpu, sun4i, exynos and etnaviv fixes	2018-11-10 13:29:47 -06:00
video
xen	CONFIG_XEN_PV breaks xen_create_contiguous_region on ARM	2018-11-02 17:18:34 +01:00