Date: Fri, 2 Dec 2005 18:02:54 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/alpha pmap.c Message-ID: <200512021802.jB2I2sqi074769@repoman.freebsd.org>
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alc 2005-12-02 18:02:54 UTC
FreeBSD src repository
Modified files:
sys/alpha/alpha pmap.c
Log:
Change pmap_enter_quick() to use the vm_prot_t parameter introduced in
revision 1.179 to correctly set/clear execute permission on the mapping
it creates. Thus, mmap(2)ing a memory resident file will not result in
the file being mapped with execute permission when execute permission was
not requested.
Eliminate an unneeded Instruction Memory Barrier (IMB) in
pmap_enter_quick(). Since there was no previous (instruction) mapping
for the given virtual address prior to pmap_enter_quick(), there can be
no instructions from the given virtual address in the pipeline that need
flushing.
MFC after: 1 week
Revision Changes Path
1.187 +4 -3 src/sys/alpha/alpha/pmap.c
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