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freebsd-dev/sys/i386/include
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Jason A. Harmening 713841afb2 Add two new pmap functions: 
vm_offset_t pmap_quick_enter_page(vm_page_t m)
void pmap_quick_remove_page(vm_offset_t kva)

These will create and destroy a temporary, CPU-local KVA mapping of a specified page.

Guarantees:
--Will not sleep and will not fail.
--Safe to call under a non-sleepable lock or from an ithread

Restrictions:
--Not guaranteed to be safe to call from an interrupt filter or under a spin mutex on all platforms
--Current implementation does not guarantee more than one page of mapping space across all platforms. MI code should not make nested calls to pmap_quick_enter_page.
--MI code should not perform locking while holding onto a mapping created by pmap_quick_enter_page

The idea is to use this in busdma, for bounce buffer copies as well as virtually-indexed cache maintenance on mips and arm.

NOTE: the non-i386, non-amd64 implementations of these functions still need review and testing.

Reviewed by:	kib
Approved by:	kib (mentor)
Differential Revision:	http://reviews.freebsd.org/D3013
2015-08-04 19:46:13 +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
apm_segments.h
asm.h Revert r274772: it is not valid on MIPS 2014-11-25 03:50:31 +00:00
asmacros.h Ensure that the upper 16 bits of segment registers manually saved in 2015-06-12 15:06:17 +00:00
atomic.h Improve comments. 2015-07-30 15:47:53 +00:00
bootinfo.h i386 bootinfo: re-arrange EFI fields for natural alignment and packing 2012-05-13 09:25:39 +00:00
bus_dma.h
bus.h Revert r243960 based on feedback regarding keeping x86 headers unified 2012-12-13 21:27:20 +00:00
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 Remove support for Xen PV domU kernels. Support for HVM domU kernels 2015-04-30 15:48:48 +00:00
cputypes.h
cserial.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
elan_mmcr.h
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
frame.h Duplicate the copyright from the i386/i386/machdep.c into 2015-07-10 09:15:06 +00:00
gdb_machdep.h Report the values of x86 segment registers to remote debuggers. 2015-06-12 15:14:08 +00:00
ieeefp.h
if_wl_wavelan.h
in_cksum.h MFp4 bz_ipv6_fast: 2012-05-24 22:00:48 +00:00
intr_machdep.h Remove support for Xen PV domU kernels. Support for HVM domU kernels 2015-04-30 15:48:48 +00:00
ioctl_bt848.h
ioctl_meteor.h
iodev.h
kdb.h
limits.h
md_var.h Clear the IA32_MISC_ENABLE MSR bit, which limits the max CPUID 2015-08-03 12:14:42 +00:00
memdev.h
metadata.h loader: implement multiboot support for Xen Dom0 2015-01-15 16:27:20 +00:00
minidump.h
mp_watchdog.h
nexusvar.h
npx.h Provide npx_get_fsave(9) and npx_set_fsave(9) functions to obtain and 2015-06-29 12:06:36 +00:00
ofw_machdep.h Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
param.h Give large kernel stack to the initial thread . Otherwise, ZFS 2015-08-04 13:50:52 +00:00
pcaudioio.h
pcb_ext.h
pcb.h MFamd64: Add support for extended FPU states on i386. This includes 2014-11-02 22:58:30 +00:00
pci_cfgreg.h
pcpu.h Add two new pmap functions: 2015-08-04 19:46:13 +00:00
perfmon.h
pmap.h Remove support for Xen PV domU kernels. Support for HVM domU kernels 2015-04-30 15:48:48 +00:00
pmc_mdep.h Use single instance of the identical INKERNEL() and PMC_IN_KERNEL() 2015-07-02 14:37:21 +00:00
ppireg.h
privatespace.h
proc.h Handle spurious page faults that may occur in no-fault sections of the 2012-03-22 04:52:51 +00:00
profile.h
psl.h Copy i386 psl.h to x86 and replace amd64/i386/pc98 psl.h with stubs. 2012-03-19 21:29:57 +00:00
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 Remove support for Xen PV domU kernels. Support for HVM domU kernels 2015-04-30 15:48:48 +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
smapi.h
smp.h Remove duplicate and useless declarations. 2015-07-22 09:12:40 +00:00
speaker.h
specialreg.h Copy i386 specialreg.h to x86 and merge with amd64 specialreg.h. Replace 2012-03-19 21:34:11 +00:00
stack.h Use single instance of the identical INKERNEL() and PMC_IN_KERNEL() 2015-07-02 14:37:21 +00:00
stdarg.h
sysarch.h Copy amd64 sysarch.h to x86 and merge with i386 sysarch.h. Replace 2012-03-19 21:57:31 +00:00
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
vm86.h x86: Allow users to change PSL_RF via ptrace(PT_SETREGS...) 2013-11-14 15:37:20 +00:00
vm.h Reassign copyright statements on several files from Advanced 2015-04-23 14:22:20 +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
xbox.h