d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
3036312050
freebsd-nq/sys/amd64/include
History
Neel Natu 9b1aa8d622 Restructure memory allocation in bhyve to support "devmem". 
devmem is used to represent MMIO devices like the boot ROM or a VESA framebuffer
where doing a trap-and-emulate for every access is impractical. devmem is a
hybrid of system memory (sysmem) and emulated device models.

devmem is mapped in the guest address space via nested page tables similar
to sysmem. However the address range where devmem is mapped may be changed
by the guest at runtime (e.g. by reprogramming a PCI BAR). Also devmem is
usually mapped RO or RW as compared to RWX mappings for sysmem.

Each devmem segment is named (e.g. "bootrom") and this name is used to
create a device node for the devmem segment (e.g. /dev/vmm/testvm.bootrom).
The device node supports mmap(2) and this decouples the host mapping of
devmem from its mapping in the guest address space (which can change).

Reviewed by:	tychon
Discussed with:	grehan
Differential Revision:	https://reviews.freebsd.org/D2762
MFC after:	4 weeks
2015-06-18 06:00:17 +00:00
..
pc - Add a new structure type for the ACPI 3.0 SMAP entry that includes the 2014-08-29 21:25:47 +00:00
xen Remove support for Xen PV domU kernels. Support for HVM domU kernels 2015-04-30 15:48:48 +00:00
_align.h
_bus.h
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h Merge acpica_machdep.h for amd64 and i386 and move to x86. In fact, these 2013-08-13 22:05:10 +00:00
apm_bios.h
asm.h Revert r274772: it is not valid on MIPS 2014-11-25 03:50:31 +00:00
asmacros.h Extend earlier addition of stack frames to most of support.S. This makes 2014-11-13 22:11:44 +00:00
atomic.h Remove empty lines before return statements for style consistency. 2013-08-21 22:05:58 +00:00
bus_dma.h
bus.h
clock.h xen: implement an early timer for Xen PVH 2014-03-11 10:20:42 +00:00
counter.h Fix issues with zeroing and fetching the counters, on x86 and ppc64. 2013-07-01 02:48:27 +00:00
cpu.h amd64/i386: introduce APIC hooks for different APIC implementations. 2014-06-16 08:43:03 +00:00
cpufunc.h Rewrite amd64 PCID implementation to follow an algorithm described in 2015-05-09 19:11:01 +00:00
cputypes.h
db_machdep.h
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
elf.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
endian.h
exec.h
fdt.h Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
float.h
floatingpoint.h
fpu.h Create a separate structure for per-CPU state saved across suspend and 2014-09-06 15:23:28 +00:00
frame.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
gdb_machdep.h
ieeefp.h
in_cksum.h MFp4 bz_ipv6_fast: 2012-05-24 22:00:48 +00:00
intr_machdep.h Use VT-d interrupt remapping block (IR) to perform FSB messages 2015-03-19 13:57:47 +00:00
iodev.h
kdb.h
limits.h
md_var.h Update print_INTEL_TLB() by the tag values from the Intel SDM 2015-06-06 22:03:24 +00:00
memdev.h
metadata.h Use explicitly sized types in EFI module metadata 2015-04-10 19:26:45 +00:00
minidump.h
mp_watchdog.h
nexusvar.h
npx.h
ofw_machdep.h Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
param.h Bump MAXCPU on amd64 from 64 to 256. In practice APIC only permits 255 2014-08-20 16:06:24 +00:00
pcb.h Create a separate structure for per-CPU state saved across suspend and 2014-09-06 15:23:28 +00:00
pci_cfgreg.h
pcpu.h Rewrite amd64 PCID implementation to follow an algorithm described in 2015-05-09 19:11:01 +00:00
pmap.h Rewrite amd64 PCID implementation to follow an algorithm described in 2015-05-09 19:11:01 +00:00
pmc_mdep.h
ppireg.h
proc.h
profile.h
psl.h
ptrace.h
pvclock.h Generalized parts of the XEN timer code into a generic pvclock 2015-02-04 08:26:43 +00:00
reg.h
reloc.h
resource.h Add support for managing PCI bus numbers. As with BARs and PCI-PCI bridge 2014-02-12 04:30:37 +00:00
runq.h
segments.h Hide struct pcb definition by #ifdef __amd64__ braces. If cc -m32 2013-11-26 19:38:42 +00:00
setjmp.h
sf_buf.h Merge all MD sf_buf allocators into one MI, residing in kern/subr_sfbuf.c 2014-08-05 09:44:10 +00:00
sigframe.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
signal.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
smp.h Rewrite amd64 PCID implementation to follow an algorithm described in 2015-05-09 19:11:01 +00:00
specialreg.h
stack.h
stdarg.h
sysarch.h
timerreg.h
trap.h
tss.h
ucontext.h Convert machine/elf.h, machine/frame.h, machine/sigframe.h, 2013-02-20 17:39:52 +00:00
varargs.h
vdso.h Implement mechanism to export some kernel timekeeping data to 2012-06-22 07:06:40 +00:00
vm.h Reassign copyright statements on several files from Advanced 2015-04-23 14:22:20 +00:00
vmm_dev.h Restructure memory allocation in bhyve to support "devmem". 2015-06-18 06:00:17 +00:00
vmm_instruction_emul.h Deprecate the 3-way return values from vm_gla2gpa() and vm_copy_setup(). 2015-05-06 16:25:20 +00:00
vmm.h Restructure memory allocation in bhyve to support "devmem". 2015-06-18 06:00:17 +00:00
vmparam.h Retire VM_FREEPOOL_CACHE as the next step in eliminating PG_CACHE pages. 2015-06-08 04:59:32 +00:00