PR/56201 CVS commit: src/sys/arch/alpha

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

The following reply was made to PR port-alpha/56201; it has been noted by GNATS.

From: "Jason R Thorpe" <thorpej%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/56201 CVS commit: src/sys/arch/alpha
Date: Mon, 24 May 2021 03:43:24 +0000

 Module Name:	src
 Committed By:	thorpej
 Date:		Mon May 24 03:43:24 UTC 2021
 
 Modified Files:
 	src/sys/arch/alpha/alpha: pmap.c
 	src/sys/arch/alpha/include: pmap.h
 
 Log Message:
 pmap_tlb_shootdown_all_user() can be called in the PV scenario as well
 as the forward scenario, for example if a pmap_page_protect() to remove
 all mappings results in the freeing of a PT page.  It therefore needs
 to do the same reference counting dance as pmap_tlb_shootdown_pv().
 
 Also fix a use-after-free error in pmap_page_protect().
 
 Add / tweak some assertions, and shrink the pmap::pm_count field from
 long to unsigned int (which gave me a spare unsigned int field for
 debugging purposes).
 
 PR port-alpha/56201.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.277 -r1.278 src/sys/arch/alpha/alpha/pmap.c
 cvs rdiff -u -r1.84 -r1.85 src/sys/arch/alpha/include/pmap.h
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.