CVS commit: src/sys/arch

["Manuel Bouyer" <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Tue May 26 10:10:32 UTC 2020

Modified Files:
        src/sys/arch/x86/include: pmap.h
        src/sys/arch/x86/x86: pmap.c
        src/sys/arch/xen/include: xenpmap.h
        src/sys/arch/xen/x86: x86_xpmap.c

Log Message:
Ajust pmap_enter_ma() for upcoming new Xen privcmd ioctl:
pass flags to xpq_update_foreign()
Introduce a pmap MD flag: PMAP_MD_XEN_NOTR, which cause xpq_update_foreign()
to use the MMU_PT_UPDATE_NO_TRANSLATE flag.
make xpq_update_foreign() return the raw Xen error. This will cause
pmap_enter_ma() to return a negative error number in this case, but the
only user of this code path is privcmd.c and it can deal with it.

Add pmap_enter_gnt()m which maps a set of Xen grant entries at the
specified va in the specified pmap. Use the hooks implemented for EPT to
keep track of mapped grand entries in the pmap, and unmap them
when pmap_remove() is called. This requires pmap_remove() to be split
into a pmap_remove_locked(), to be called from pmap_remove_gnt().


To generate a diff of this commit:
cvs rdiff -u -r1.120 -r1.121 src/sys/arch/x86/include/pmap.h
cvs rdiff -u -r1.393 -r1.394 src/sys/arch/x86/x86/pmap.c
cvs rdiff -u -r1.43 -r1.44 src/sys/arch/xen/include/xenpmap.h
cvs rdiff -u -r1.88 -r1.89 src/sys/arch/xen/x86/x86_xpmap.c

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