freebsd-nq/sys/arm64
Alan Cox d1dde35baa Introduce pmap_clear(), which zeroes a page table entry, and use it, instead
of pmap_load_clear(), in places where we don't care about the page table
entry's prior contents.

Eliminate an unnecessary pmap_load() from pmap_remove_all().  Instead, use
the value returned by the pmap_load_clear() on the very next line.  (In the
future, when we support "hardware dirty bit management", using the value
from the pmap_load() rather than the pmap_load_clear() would have actually
been an error because the dirty bit could potentially change between the
pmap_load() and the pmap_load_clear().)

A KASSERT() in pmap_enter(), which originated in the amd64 pmap, was meant
to check the value returned by the pmap_load_clear() on the previous line.
However, we were ignoring the value returned by the pmap_load_clear(), and
so the KASSERT() was not serving its intended purpose.  Use the value
returned by the pmap_load_clear() in the KASSERT().

MFC after:	2 weeks
2019-07-09 20:28:53 +00:00
..
acpica arm64 acpi_iort: add some error handling 2019-06-24 21:24:55 +00:00
arm64 Introduce pmap_clear(), which zeroes a page table entry, and use it, instead 2019-07-09 20:28:53 +00:00
cavium Rename the ThunderX CPU identification macros to include the X. This is the 2018-06-13 12:17:11 +00:00
cloudabi32 Remove sv_pagesize, originally introduced with r100384. 2019-03-01 16:16:38 +00:00
cloudabi64 Remove sv_pagesize, originally introduced with r100384. 2019-03-01 16:16:38 +00:00
conf sys: Remove DEV_RANDOM device option 2019-06-21 00:16:30 +00:00
coresight Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
include Lightly hide the 'var' inside the macros to read the arm special registers. 2019-06-15 00:47:39 +00:00
linux makesyscalls.sh: always use absolute path for syscalls.conf 2019-05-30 20:56:23 +00:00
qualcomm Enable Qualcomm Debug Subsystem (QDSS) block on MSM8916 SoC. 2018-04-10 12:53:48 +00:00
rockchip Subclass Rockchip's General Register Files driver from Simple MFD driver. 2019-07-03 03:42:51 +00:00