haraldwolff/qemu-patch-raspberry4
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vfio-ccw: remove orb.c64 (64 bit data addresses) check

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The vfio-ccw module does the check too, and there is actually no
technical obstacle for supporting fmt 1 idaws. Let us be ready for the
beautiful day when fmt 1 idaws become supported by the vfio-ccw kernel
module. QEMU does not have to do a thing for that, except not insisting
on this check.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Acked-by: Jason J. Herne <jjherne@linux.ibm.com>
Tested-by: Jason J. Herne <jjherne@linux.ibm.com>
Message-Id: <20180524175828.3143-3-pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Halil Pasic 2018-05-24 19:58:28 +02:00 committed by Cornelia Huck
parent 9a51c9ee6c
commit ea2dd691e2
1 changed files with 0 additions and 11 deletions
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11
hw/s390x/css.c
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@ -1199,17 +1199,6 @@ static IOInstEnding sch_handle_start_func_passthrough(SubchDev *sch)
assert(orb != NULL);
p->intparm = orb->intparm;
}
/*
* Only support prefetch enable mode.
* Only support 64bit addressing idal.
*/
if (!(orb->ctrl0 & ORB_CTRL0_MASK_C64)) {
warn_report("vfio-ccw requires PFCH and C64 flags set");
sch_gen_unit_exception(sch);
css_inject_io_interrupt(sch);
return IOINST_CC_EXPECTED;
}
return s390_ccw_cmd_request(sch);
}