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author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2020-01-16 20:24:14 +0000 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2020-01-22 00:50:03 -0500 |
commit | 76525114736e8f669766e69b715fa59ce8648aae (patch) | |
tree | 41b24153bb9b882e39e79ccfa04c44d4ae39b1e3 /hw/i386 | |
parent | ff4776147e960b128ee68f94c728659f662f4378 (diff) | |
download | qemu-76525114736e8f669766e69b715fa59ce8648aae.zip qemu-76525114736e8f669766e69b715fa59ce8648aae.tar.gz qemu-76525114736e8f669766e69b715fa59ce8648aae.tar.bz2 |
vhost: Only align sections for vhost-user
I added hugepage alignment code in c1ece84e7c9 to deal with
vhost-user + postcopy which needs aligned pages when using userfault.
However, on x86 the lower 2MB of address space tends to be shotgun'd
with small fragments around the 512-640k range - e.g. video RAM, and
with HyperV synic pages tend to sit around there - again splitting
it up. The alignment code complains with a 'Section rounded to ...'
error and gives up.
Since vhost-user already filters out devices without an fd
(see vhost-user.c vhost_user_mem_section_filter) it shouldn't be
affected by those overlaps.
Turn the alignment off on vhost-kernel so that it doesn't try
and align, and thus won't hit the rounding issues.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200116202414.157959-3-dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/i386')
0 files changed, 0 insertions, 0 deletions