On 09.04.19 18:40, Paul Durrant wrote: > A recent Xen commit [1] clarified the semantics of sector based quantities > used in the blkif protocol such that it is now safe to create a xen-block > device with a logical_block_size != 512, as long as the device only > connects to a frontend advertizing 'feature-large-block-size'. > > This patch modifies xen-block accordingly. It also uses a stack variable > for the BlockBackend in xen_block_realize() to avoid repeated dereferencing > of the BlockConf pointer, and changes the parameters of > xen_block_dataplane_create() so that the BlockBackend pointer and sector > size are passed expicitly rather than implicitly via the BlockConf. > > These modifications have been tested against a recent Windows PV XENVBD > driver [2] using a xen-disk device with a 4kB logical block size. > > [1] > http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=67e1c050e36b2c9900cca83618e56189effbad98 > [2] https://winpvdrvbuild.xenproject.org:8080/job/XENVBD-master/126 > > Signed-off-by: Paul Durrant <paul.durr...@citrix.com> > --- > Cc: Stefano Stabellini <sstabell...@kernel.org> > Cc: Anthony Perard <anthony.per...@citrix.com> > Cc: Stefan Hajnoczi <stefa...@redhat.com> > Cc: Kevin Wolf <kw...@redhat.com> > Cc: Max Reitz <mre...@redhat.com> > --- > hw/block/dataplane/xen-block.c | 25 ++++++++++++---------- > hw/block/dataplane/xen-block.h | 3 ++- > hw/block/xen-block.c | 38 +++++++++++++++++++++------------- > 3 files changed, 40 insertions(+), 26 deletions(-)
Thanks, added “by frontend” to the error message and applied to my block branch: https://git.xanclic.moe/XanClic/qemu/commits/branch/block Max
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