freebsd-src/sys/amd64
Alan Cox f1d73aacdc pmap: Skip some superpage promotion attempts that will fail
Implement a simple heuristic to skip pointless promotion attempts by
pmap_enter_quick_locked() and moea64_enter().  Specifically, when
vm_fault() calls pmap_enter_quick() to map neighboring pages at the end
of a copy-on-write fault, there is no point in attempting promotion in
pmap_enter_quick_locked() and moea64_enter().  Promotion will fail
because the base pages have differing protection.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D45431
MFC after:	1 week
2024-06-04 00:38:05 -05:00
..
acpica sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
amd64 pmap: Skip some superpage promotion attempts that will fail 2024-06-04 00:38:05 -05:00
conf sys/amd64/conf/LINT-NOINET{6,}: don't set WITHOUT_INET{6,}_SUPPORT 2024-05-24 22:21:25 -06:00
ia32 freebsd32: struct siginfo32 -> struct __siginfo32 2024-03-19 23:13:26 +00:00
include libkern: add ilog2 macro 2024-06-03 11:37:55 -05:00
linux syscalls: Regen for Linux emulator additions 2024-05-23 13:40:47 -06:00
linux32 syscalls: Regen for Linux emulator additions 2024-05-23 13:40:47 -06:00
pci x86: Adjust base addr for PCI MCFG regions 2023-12-27 13:14:47 -08:00
sgx Reduce reliance on sys/sysproto.h pollution 2024-04-15 21:35:40 +01:00
vmm vmm: Start reconciling amd64 and arm64 copies of vmm_dev.c 2024-05-08 12:11:03 -04:00
Makefile sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00