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freebsd-skq/sys/i386/include
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alc 85b0c58343 Retire VM_PROT_READ_IS_EXEC. It was intended to be a micro-optimization, 
but I see no benefit from it today.

VM_PROT_READ_IS_EXEC was only intended for use on processors that do not
distinguish between read and execute permission.  On an mmap(2) or
mprotect(2), it automatically added execute permission if the caller
specified permissions included read permission.  The hope was that this
would reduce the number of vm map entries needed to implement an address
space because there would be fewer neighboring vm map entries that differed
only in the presence or absence of VM_PROT_EXECUTE.  (See vm/vm_mmap.c
revision 1.56.)

Today, I don't see any real applications that benefit from
VM_PROT_READ_IS_EXEC.  In any case, vm map entries are now organized
as a self-adjusting binary search tree instead of an ordered list.  So,
the need for coalescing vm map entries is not as great as it once was.
2009-04-04 23:12:14 +00:00
..
pc Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
xen Fix the Xen build for i386 PV mode. 2009-04-01 17:06:28 +00:00
_bus.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
_inttypes.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
_limits.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
_stdint.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
_types.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
acpica_machdep.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
apicreg.h Add constants for fields in the local APIC error status register and a 2008-12-11 15:56:30 +00:00
apicvar.h - Allocate apic vectors on a per-cpu basis. This allows us to allocate 2009-01-29 09:22:56 +00:00
apm_bios.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
apm_segments.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
asm.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
asmacros.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
atomic.h Restore memory clobber, to cause mb on the compiler level too. 2008-12-06 21:33:44 +00:00
bootinfo.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
bus_dma.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
bus.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
clock.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
cpu.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
cpufunc.h Change some movl's to mov's. Newer GAS no longer accept 'movl' instructions 2009-01-31 11:37:21 +00:00
cputypes.h Introduce cpu_vendor_id and replace a lot of strcmp(cpu_vendor, "..."). 2008-11-26 19:25:13 +00:00
cserial.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
db_machdep.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
elan_mmcr.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
elf.h Add AT_EXECPATH ELF auxinfo entry type. The value's a_ptr is a pointer 2009-03-17 12:50:16 +00:00
endian.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
exec.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
float.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
floatingpoint.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
frame.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
gdb_machdep.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
ieeefp.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
if_wl_wavelan.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
in_cksum.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
intr_machdep.h - Allocate apic vectors on a per-cpu basis. This allows us to allocate 2009-01-29 09:22:56 +00:00
ioctl_bt848.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
ioctl_meteor.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
iodev.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
kdb.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
legacyvar.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
limits.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
md_var.h Introduce cpu_vendor_id and replace a lot of strcmp(cpu_vendor, "..."). 2008-11-26 19:25:13 +00:00
memdev.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
metadata.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
minidump.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
mp_watchdog.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
mptable.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
mutex.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
nexusvar.h Rework how the nexus(4) device works on x86 to better handle the idea of 2008-03-13 20:39:04 +00:00
npx.h Some cleanups to the i386 FPU support: 2009-03-05 18:32:43 +00:00
param.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
pcaudioio.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
pcb_ext.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
pcb.h A better fix for handling different FPU initial control words for different 2009-03-05 19:42:11 +00:00
pci_cfgreg.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
pcpu.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
perfmon.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
pmap.h Update stale comments. The alternate address space mapping was eliminated 2009-03-22 18:56:26 +00:00
pmc_mdep.h - Add support for PMCs in Intel CPUs of Family 6, model 0xE (Core Solo 2008-11-27 09:00:47 +00:00
ppireg.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
privatespace.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
proc.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
profile.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
psl.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
ptrace.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
reg.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
reloc.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
resource.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
runq.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
segments.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
setjmp.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
sf_buf.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
sigframe.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
signal.h Sync definitions for struct sigcontext for i386 and amd64 architectures 2009-04-01 13:44:28 +00:00
smapi.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
smp.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
speaker.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
specialreg.h Add more CPUID bits from AMD CPUID Specification Rev. 2.28. 2008-12-12 23:17:00 +00:00
stack.h Break out stack(9) from ddb(4): 2007-12-02 20:40:35 +00:00
stdarg.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
sysarch.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
timerreg.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
trap.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
tss.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
ucontext.h Add all segment registers for the amd64 CPU to struct reg and mcontext. 2009-04-01 12:44:17 +00:00
varargs.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
vm86.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00
vmparam.h Retire VM_PROT_READ_IS_EXEC. It was intended to be a micro-optimization, 2009-04-04 23:12:14 +00:00
xbox.h Clone Kip's Xen on stable/6 tree so that I can work on improving FreeBSD/amd64 2008-11-22 16:14:52 +00:00