CVS commit: src/sys/arch/x86/pci

[David Young <dyoung%netbsd.org@localhost>]

Module Name:    src
Committed By:   dyoung
Date:           Tue Apr 27 23:33:14 UTC 2010

Modified Files:
        src/sys/arch/x86/pci: pci_machdep.c

Log Message:
Make pci_conf_read(9) and pci_conf_write(9) re-entrant so that the
kernel can use them in an NMI trap handler.  Only one CPU can be
in _read() or _write() at once.  However, on any single CPU, more
than one thread of execution (LWP, interrupt handler, trap handler)
may be in _read() or _write() at once, because each thread saves
and restores the PCI configuration-access state.


To generate a diff of this commit:
cvs rdiff -u -r1.41 -r1.42 src/sys/arch/x86/pci/pci_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.