Konstantin Belousov 3b23ffe271 amd64 pmap: reorder IPI send and local TLB flush in TLB invalidations. ... Right now code first flushes all local TLB entries that needs to be flushed, then signals IPI to remote cores, and then waits for acknowledgements while spinning idle. In the VMWare article 'Don’t shoot down TLB shootdowns!' it was noted that the time spent spinning is lost, and can be more usefully used doing local TLB invalidation. We could use the same invalidation handler for local TLB as for remote, but typically for pmap == curpmap we can use INVLPG for locals instead of INVPCID on remotes, since we cannot control context switches on them. Due to that, keep the local code and provide the callbacks to be called from smp_targeted_tlb_shootdown() after IPIs are fired but before spin wait starts. Reviewed by: alc, cem, markj, Anton Rang <rang at acm.org> Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D25188		2020-06-10 22:07:57 +00:00
..
acpica	Merge ACPICA 20190329.	2019-03-29 20:21:28 +00:00
bios
cloudabi32	Use uintptr_t instead of register_t * for the stack base.	2019-12-03 23:17:54 +00:00
conf	retire cx,ctau drivers	2020-03-20 16:50:19 +00:00
i386	amd64 pmap: reorder IPI send and local TLB flush in TLB invalidations.	2020-06-10 22:07:57 +00:00
include	Expand generic subword atomic primitives	2020-03-25 23:12:43 +00:00
linux	Convert canary, execpathp, and pagesizes to pointers.	2020-04-16 21:53:17 +00:00
pci	Detect invalid PCI devices more correctly in PCI interrupt router drivers.	2019-08-06 23:15:04 +00:00
Makefile