------- Comment From [email protected] 2020-09-10 11:46 EDT------- (In reply to comment #19) ...snip... > If you want to drive this forward to FOCAL as well it might be useful to > provide us a header update with just exactly what you need instead.
As far as the header update in QEMU goes, these two kernel commits are the ones involved: d8cac29b1d52 vfio-ccw: Introduce a new CRW region 24c986748ba6 vfio-ccw: Introduce a new schib region With those applied to kernel 5.4, the following diff is the important hunk for QEMU. Should apply to https://git.launchpad.net/~usd-import- team/ubuntu/+source/qemu branch origin/ubuntu/focal-devel diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h index fb10370d2..9e227348b 100644 --- a/linux-headers/linux/vfio.h +++ b/linux-headers/linux/vfio.h @@ -378,6 +378,8 @@ struct vfio_region_gfx_edid { /* sub-types for VFIO_REGION_TYPE_CCW */ #define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD (1) +#define VFIO_REGION_SUBTYPE_CCW_SCHIB (2) +#define VFIO_REGION_SUBTYPE_CCW_CRW (3) /* * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped @@ -577,6 +579,7 @@ enum { enum { VFIO_CCW_IO_IRQ_INDEX, + VFIO_CCW_CRW_IRQ_INDEX, VFIO_CCW_NUM_IRQS }; diff --git a/linux-headers/linux/vfio_ccw.h b/linux-headers/linux/vfio_ccw.h index fcc3e69ef..516496f1d 100644 --- a/linux-headers/linux/vfio_ccw.h +++ b/linux-headers/linux/vfio_ccw.h @@ -34,4 +34,23 @@ struct ccw_cmd_region { __u32 ret_code; } __attribute__((packed)); +/* + * Used for processing commands that read the subchannel-information block + * Reading this region triggers a stsch() to hardware + * Note: this is controlled by a capability + */ +struct ccw_schib_region { +#define SCHIB_AREA_SIZE 52 + __u8 schib_area[SCHIB_AREA_SIZE]; +} __attribute__((packed)); + +/* + * Used for returning a Channel Report Word to userspace. + * Note: this is controlled by a capability + */ +struct ccw_crw_region { + __u32 crw; + __u32 pad; +} __attribute__((packed)); + #endif -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887930 Title: [FFe][20.10 FEAT] KVM: Enable Channel Path Handling for vfio-ccw - qemu part To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1887930/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
