[Qemu-commits] [qemu/qemu] 4158e9: xen-mapcache: use MAP_FIXED flag so the mmap addre...

[Peter Maydell]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: 4158e93f4aced247c8db94a0275fc027da7dc97e
      
https://github.com/qemu/qemu/commit/4158e93f4aced247c8db94a0275fc027da7dc97e
  Author: Roger Pau Monne <address@hidden>
  Date:   2019-03-19 (Tue, 19 Mar 2019)

  Changed paths:
    M hw/i386/xen/xen-mapcache.c

  Log Message:
  -----------
  xen-mapcache: use MAP_FIXED flag so the mmap address hint is always honored

Or if it's not possible to honor the hinted address an error is returned
instead. This makes it easier to spot the actual failure, instead of
failing later on when the caller of xen_remap_bucket realizes the
mapping has not been created at the requested address.

Also note that at least on FreeBSD using MAP_FIXED will cause mmap to
try harder to honor the passed address.

Signed-off-by: Roger Pau Monné <address@hidden>
Reviewed-by: Paul Durrant <address@hidden>
Acked-by: Anthony PERARD <address@hidden>
Reviewed-by: Igor Druzhinin <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Anthony PERARD <address@hidden>


  Commit: 9bc59ffd9e157ced671f2b60bbcfa3bceceacd4d
      
https://github.com/qemu/qemu/commit/9bc59ffd9e157ced671f2b60bbcfa3bceceacd4d
  Author: Peter Maydell <address@hidden>
  Date:   2019-03-19 (Tue, 19 Mar 2019)

  Changed paths:
    M hw/i386/xen/xen-mapcache.c

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/aperard/tags/pull-xen-20190319' into 
staging

Xen queue

Fix a bug on FreeBSD when doing a migration.

# gpg: Signature made Tue 19 Mar 2019 15:40:55 GMT
# gpg:                using RSA key F80C006308E22CFD8A92E7980CF5572FD7FB55AF
# gpg:                issuer "address@hidden"
# gpg: Good signature from "Anthony PERARD <address@hidden>" [marginal]
# gpg:                 aka "Anthony PERARD <address@hidden>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5379 2F71 024C 600F 778A  7161 D8D5 7199 DF83 42C8
#      Subkey fingerprint: F80C 0063 08E2 2CFD 8A92  E798 0CF5 572F D7FB 55AF

* remotes/aperard/tags/pull-xen-20190319:
  xen-mapcache: use MAP_FIXED flag so the mmap address hint is always honored

Signed-off-by: Peter Maydell <address@hidden>


Compare: https://github.com/qemu/qemu/compare/b98a66201dbc...9bc59ffd9e15