PR/45519 CVS commit: src/sys/arch/m68k

["Izumi Tsutsui" <tsutsui%netbsd.org@localhost>]

The following reply was made to PR port-m68k/45519; it has been noted by GNATS.

From: "Izumi Tsutsui" <tsutsui%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/45519 CVS commit: src/sys/arch/m68k
Date: Sat, 29 Oct 2011 18:26:20 +0000

 Module Name:   src
 Committed By:  tsutsui
 Date:          Sat Oct 29 18:26:20 UTC 2011
 
 Modified Files:
        src/sys/arch/m68k/include: pmap_motorola.h
        src/sys/arch/m68k/m68k: pmap_motorola.c
 
 Log Message:
 Use pool(9) for struct pv_entry allocations rather than
 uvm_km_alloc(9)/uvm_km_free(9) and ancient homegrown pv_page_info structures.
 
 Calling uvm_km_free(9) during pmap_remove(9) could cause rw_lock error
 in uvm_unmap1() as noted in PR port-m68k/45519.
 
 NetBSD/x68k (both real X68030 and XM6i emulator) still gets weird panic
 (corrupted kernel stack pointer?) on some heavy load:
 ---
 panic: MMU fault
 Stopped in pid 363.1 (X68k) at  netbsd:cpu_Debugger+0x6:       unlk    a6
 db> tr
 cpu_Debugger(4012004,8,1cbb528,2a618e0,2a5b000) + 6
 db>
 ---
 but it also occurs without this change so there might be some more bugs
 in m68k pmap...
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.33 -r1.34 src/sys/arch/m68k/include/pmap_motorola.h
 cvs rdiff -u -r1.62 -r1.63 src/sys/arch/m68k/m68k/pmap_motorola.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.