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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 10:06:12 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 10:06:12 -0700 |
commit | 1758feddb0f9751debdc865fefde94b45907c948 (patch) | |
tree | 3b677285709b730e572724dcdd925e43333f2d45 /drivers/s390/cio/device_id.c | |
parent | Merge tag 'm68k-for-v5.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k (diff) | |
parent | docs: s390: s390dbf: typos and formatting, update crash command (diff) | |
download | linux-dev-1758feddb0f9751debdc865fefde94b45907c948.tar.xz linux-dev-1758feddb0f9751debdc865fefde94b45907c948.zip |
Merge tag 's390-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Improve stop_machine wait logic: replace cpu_relax_yield call in
generic stop_machine function with a weak stop_machine_yield
function. This is overridden on s390, which yields the current cpu to
the neighbouring cpu after a couple of retries, instead of blindly
giving up the cpu to the hipervisor. This significantly improves
stop_machine performance on s390 in overcommitted scenarios.
This includes common code changes which have been Acked by Peter
Zijlstra and Thomas Gleixner.
- Improve jump label transformation speed: transform jump labels
without using stop_machine.
- Refactoring of the vfio-ccw cp handling, simplifying the code and
avoiding unneeded allocating/copying.
- Various vfio-ccw fixes (ccw translation, state machine).
- Add support for vfio-ap queue interrupt control in the guest. This
includes s390 kvm changes which have been Acked by Christian
Borntraeger.
- Add protected virtualization support for virtio-ccw.
- Enforce both CONFIG_SMP and CONFIG_HOTPLUG_CPU, which allows to
remove some code which most likely isn't working at all, besides that
s390 didn't even compile for !CONFIG_SMP.
- Support for special flagged EP11 CPRBs for zcrypt.
- Handle PCI devices with no support for new MIO instructions.
- Avoid KASAN false positives in reworked stack unwinder.
- Couple of fixes for the QDIO layer.
- Convert s390 specific documentation to ReST format.
- Let s390 crypto modules return -ENODEV instead of -EOPNOTSUPP if
hardware is missing. This way our modules behave like most other
modules and which is also what systemd's systemd-modules-load.service
expects.
- Replace defconfig with performance_defconfig, so there is one config
file less to maintain.
- Remove the SCLP call home device driver, which was never useful.
- Cleanups all over the place.
* tag 's390-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (83 commits)
docs: s390: s390dbf: typos and formatting, update crash command
docs: s390: unify and update s390dbf kdocs at debug.c
docs: s390: restore important non-kdoc parts of s390dbf.rst
vfio-ccw: Fix the conversion of Format-0 CCWs to Format-1
s390/pci: correctly handle MIO opt-out
s390/pci: deal with devices that have no support for MIO instructions
s390: ap: kvm: Enable PQAP/AQIC facility for the guest
s390: ap: implement PAPQ AQIC interception in kernel
vfio: ap: register IOMMU VFIO notifier
s390: ap: kvm: add PQAP interception for AQIC
s390/unwind: cleanup unused READ_ONCE_TASK_STACK
s390/kasan: avoid false positives during stack unwind
s390/qdio: don't touch the dsci in tiqdio_add_input_queues()
s390/qdio: (re-)initialize tiqdio list entries
s390/dasd: Fix a precision vs width bug in dasd_feature_list()
s390/cio: introduce driver_override on the css bus
vfio-ccw: make convert_ccw0_to_ccw1 static
vfio-ccw: Remove copy_ccw_from_iova()
vfio-ccw: Factor out the ccw0-to-ccw1 transition
vfio-ccw: Copy CCW data outside length calculation
...
Diffstat (limited to 'drivers/s390/cio/device_id.c')
-rw-r--r-- | drivers/s390/cio/device_id.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c index f6df83a9dfbb..740996d0dc8c 100644 --- a/drivers/s390/cio/device_id.c +++ b/drivers/s390/cio/device_id.c @@ -99,7 +99,7 @@ static int diag210_to_senseid(struct senseid *senseid, struct diag210 *diag) static int diag210_get_dev_info(struct ccw_device *cdev) { struct ccw_dev_id *dev_id = &cdev->private->dev_id; - struct senseid *senseid = &cdev->private->senseid; + struct senseid *senseid = &cdev->private->dma_area->senseid; struct diag210 diag_data; int rc; @@ -134,8 +134,10 @@ err_failed: static void snsid_init(struct ccw_device *cdev) { cdev->private->flags.esid = 0; - memset(&cdev->private->senseid, 0, sizeof(cdev->private->senseid)); - cdev->private->senseid.cu_type = 0xffff; + + memset(&cdev->private->dma_area->senseid, 0, + sizeof(cdev->private->dma_area->senseid)); + cdev->private->dma_area->senseid.cu_type = 0xffff; } /* @@ -143,16 +145,16 @@ static void snsid_init(struct ccw_device *cdev) */ static int snsid_check(struct ccw_device *cdev, void *data) { - struct cmd_scsw *scsw = &cdev->private->irb.scsw.cmd; + struct cmd_scsw *scsw = &cdev->private->dma_area->irb.scsw.cmd; int len = sizeof(struct senseid) - scsw->count; /* Check for incomplete SENSE ID data. */ if (len < SENSE_ID_MIN_LEN) goto out_restart; - if (cdev->private->senseid.cu_type == 0xffff) + if (cdev->private->dma_area->senseid.cu_type == 0xffff) goto out_restart; /* Check for incompatible SENSE ID data. */ - if (cdev->private->senseid.reserved != 0xff) + if (cdev->private->dma_area->senseid.reserved != 0xff) return -EOPNOTSUPP; /* Check for extended-identification information. */ if (len > SENSE_ID_BASIC_LEN) @@ -170,7 +172,7 @@ out_restart: static void snsid_callback(struct ccw_device *cdev, void *data, int rc) { struct ccw_dev_id *id = &cdev->private->dev_id; - struct senseid *senseid = &cdev->private->senseid; + struct senseid *senseid = &cdev->private->dma_area->senseid; int vm = 0; if (rc && MACHINE_IS_VM) { @@ -200,7 +202,7 @@ void ccw_device_sense_id_start(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); struct ccw_request *req = &cdev->private->req; - struct ccw1 *cp = cdev->private->iccws; + struct ccw1 *cp = cdev->private->dma_area->iccws; CIO_TRACE_EVENT(4, "snsid"); CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id)); @@ -208,7 +210,7 @@ void ccw_device_sense_id_start(struct ccw_device *cdev) snsid_init(cdev); /* Channel program setup. */ cp->cmd_code = CCW_CMD_SENSE_ID; - cp->cda = (u32) (addr_t) &cdev->private->senseid; + cp->cda = (u32) (addr_t) &cdev->private->dma_area->senseid; cp->count = sizeof(struct senseid); cp->flags = CCW_FLAG_SLI; /* Request setup. */ |