CVS commit: src/sys/arch/alpha

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

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.