jhb 2da46e01a0 Add a new bus method to fetch device-specific CPU sets. ... bus_get_cpus() returns a specified set of CPUs for a device. It accepts an enum for the second parameter that indicates the type of cpuset to request. Currently two valus are supported: - LOCAL_CPUS (on x86 this returns all the CPUs in the package closest to the device when DEVICE_NUMA is enabled) - INTR_CPUS (like LOCAL_CPUS but only returns 1 SMT thread for each core) For systems that do not support NUMA (or if it is not enabled in the kernel config), LOCAL_CPUS fails with EINVAL. INTR_CPUS is mapped to 'all_cpus' by default. The idea is that INTR_CPUS should always return a valid set. Device drivers which want to use per-CPU interrupts should start using INTR_CPUS instead of simply assigning interrupts to all available CPUs. In the future we may wish to add tunables to control the policy of INTR_CPUS (e.g. should it be local-only or global, should it ignore SMT threads or not). The x86 nexus driver exposes the internal set of interrupt CPUs from the the x86 interrupt code via INTR_CPUS. The ACPI bus driver and PCI bridge drivers use _PXM to return a suitable LOCAL_CPUS set when _PXM exists and DEVICE_NUMA is enabled. They also and the global INTR_CPUS set from the nexus driver with the per-domain set from _PXM to generate a local INTR_CPUS set for child devices. Reviewed by: wblock (manpage) Differential Revision: https://reviews.freebsd.org/D5519		2016-05-02 18:00:38 +00:00
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acpica	If x86 CPU implementation of the MWAIT instruction reasonably	2015-05-09 12:28:48 +00:00
amd64	fix missing variable in r298736	2016-04-28 09:40:24 +00:00
cloudabi64	Make CloudABI's way of doing TLS more friendly to userspace emulators.	2016-04-06 11:11:31 +00:00
conf	Move 'device pci' for the PCI bus driver to the MI NOTES file.	2016-04-29 23:53:55 +00:00
ia32	Convert ss_sp in stack_t and sigstack to void *.	2016-01-27 17:55:01 +00:00
include	Add a new bus method to fetch device-specific CPU sets.	2016-05-02 18:00:38 +00:00
linux	Cleanup redundant parenthesis from existing howmany()/roundup() macro uses.	2016-04-22 16:57:42 +00:00
linux32	Cleanup redundant parenthesis from existing howmany()/roundup() macro uses.	2016-04-22 16:57:42 +00:00
pci	Pull in r267961 and r267973 again. Fix for issues reported will follow.	2014-06-28 03:56:17 +00:00
vmm	Allow guest writes to AMD microcode update[0xc0010020] MSR without updating actual hardware MSR. This allows guest microcode update to go through which otherwise failing because wrmsr() was returning EINVAL.	2016-04-11 05:09:43 +00:00
Makefile	Bring the tags and links entries for amd64 up to date.	2015-10-27 22:59:24 +00:00