kib 3584ef8115 Stop clearing x87 exceptions in the #MF handler on amd64. If user code ... understands FPU hardware enough to catch SIGFPE and unmask exceptions in control word, then it may as well properly handle return from SIGFPE without causing an infinite loop of #MF exceptions due to faulting instruction restart, when needed. Clearing exceptions causes information loss for handlers which do understand FPU hardware, and struct siginfo si_code member cannot be considered adequate replacement for en_sw content due to translation. Supposed reason for clearing the exceptions, which is IRQ13 handling oddities, were never applicable to amd64. Note: this change will be merged to i386 kernel as well, since we do not support IRQ13 delivery of #MF notifications for some time. Requested by: bde MFC after: 1 week		2012-07-21 13:05:34 +00:00
..
acpica	- Remove unused code for CR3 and CR4.	2012-06-13 22:53:56 +00:00
amd64	Stop clearing x87 exceptions in the #MF handler on amd64. If user code	2012-07-21 13:05:34 +00:00
compile
conf	tws(4) is interfaced with CAM so move it to the same section.	2012-07-01 08:10:49 +00:00
ia32	Eliminate ia32_reg.h by moving its contents to x86 and ia64 reg.h.	2012-03-18 19:12:11 +00:00
include	Introduce curpcb magic variable, similar to curthread, which is MD	2012-07-19 19:09:12 +00:00
linux32	Regenerate system call tables.	2012-05-25 21:52:57 +00:00
pci	Move {amd64,i386}/pci/pci_bus.c and {amd64,i386}/include/pci_cfgreg.h to	2011-06-22 21:04:13 +00:00
Makefile