- 09 12月, 2014 2 次提交
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由 Michael S. Tsirkin 提交于
Change u32 to u64, and use BIT_ULL and 1ULL everywhere. Note: transports are unchanged, and only set low 32 bit. This guarantees that no transport sets e.g. VERSION_1 by mistake without proper support. Based on patch by Rusty. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Michael S. Tsirkin 提交于
It seemed like a good idea to use bitmap for features in struct virtio_device, but it's actually a pain, and seems to become even more painful when we get more than 32 feature bits. Just change it to a u32 for now. Based on patch by Rusty. Suggested-by: NDavid Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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- 15 10月, 2014 1 次提交
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由 Michael S. Tsirkin 提交于
Replace duplicated code in all transports with a single wrapper in virtio.c. The only functional change is in virtio_mmio.c: if a buggy device sends us an interrupt before driver is set, we previously returned IRQ_NONE, now we return IRQ_HANDLED. As this must not happen in practice, this does not look like a big deal. See also commit 3fff0179 virtio-pci: do not oops on config change if driver not loaded. for the original motivation behind the driver check. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 03 4月, 2014 1 次提交
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由 Thomas Huth 提交于
Use the new defines for external interruption codes to get rid of "magic" numbers in the s390 source code. And while we're at it, also rename the (un-)register_external_interrupt function to something shorter so that this patch does not exceed the 80 columns all over the place. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 29 10月, 2013 1 次提交
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由 Heinz Graalfs 提交于
Currently a host kick error is silently ignored and not reflected in the virtqueue of a particular virtio device. Changing the notify API for guest->host notification seems to be one prerequisite in order to be able to handle such errors in the context where the kick is triggered. This patch changes the notify API. The notify function must return a bool return value. It returns false if the host notification failed. Signed-off-by: NHeinz Graalfs <graalfs@linux.vnet.ibm.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 04 9月, 2013 1 次提交
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由 Heiko Carstens 提交于
Let's not add a function for every external interrupt subclass for which we need reference counting. Just have two register/unregister functions which have a subclass parameter: void irq_subclass_register(enum irq_subclass subclass); void irq_subclass_unregister(enum irq_subclass subclass); Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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- 02 5月, 2013 1 次提交
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由 Nick Wang 提交于
The current location for mapping Virtio devices does not take into consideration of the standby memory. This causes the failure of mapping standby memory since the location for the mapping is already taken by the Virtio devices. To fix the problem, we move the location to beyond the end of standby memory. Signed-off-by: NNick Wang <jfwang@us.ibm.com> Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 02 4月, 2013 1 次提交
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由 Nick Wang 提交于
The current location for mapping virtio devices does not take into consideration the standby memory. This causes the failure of mapping standby memory since the location for the mapping is already taken by the virtio devices. To fix the problem, we move the location to beyond the end of standby memory. Signed-off-by: NNick Wang <jfwang@us.ibm.com> Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 11 2月, 2013 1 次提交
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由 Stephen Hemminger 提交于
It is just a table of function pointers, make it const for cleanliness and security reasons. Signed-off-by: NStephen Hemminger <stephen@networkplumber.org> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 08 1月, 2013 1 次提交
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由 Heiko Carstens 提交于
Now that irq sum accounting for /proc/stat's "intr" line works again we have the oddity that the sum field (first field) contains only the sum of the second (external irqs) and third field (I/O interrupts). The reason for that is that these two fields are already sums of all other fields. So if we would sum up everything we would count every interrupt twice. This is broken since the split interrupt accounting was merged two years ago: 052ff461 "[S390] irq: have detailed statistics for interrupt types". To fix this remove the split interrupt fields from /proc/stat's "intr" line again and only have them in /proc/interrupts. This restores the old behaviour, seems to be the only sane fix and mimics a behaviour from other architectures where /proc/interrupts also contains more than /proc/stat's "intr" line does. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 18 12月, 2012 1 次提交
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由 Cornelia Huck 提交于
Running under a kvm host does not necessarily imply the presence of a page mapped above the main memory with the virtio information; however, the code includes a hard coded access to that page. Instead, check for the presence of the page and exit gracefully before we hit an addressing exception if it does not exist. Reviewed-by: NMarcelo Tosatti <mtosatti@redhat.com> Reviewed-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> cc: stable@vger.kernel.org Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 28 9月, 2012 2 次提交
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由 Michael S. Tsirkin 提交于
virtio network device multiqueue support reserves vq 3 for future use (useful both for future extensions and to make it pretty - this way receive vqs have even and transmit - odd numbers). Make it possible to skip initialization for specific vq numbers by specifying NULL for name. Document this usage as well as (existing) NULL callback. Drivers using this not coded up yet, so I simply tested with virtio-pci and verified that this patch does not break existing drivers. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jason Wang 提交于
Instead of storing the queue index in transport-specific virtio structs, this patch moves them to vring_virtqueue and introduces an helper to get the value. This lets drivers simplify their management and tracing of virtqueues. Signed-off-by: NJason Wang <jasowang@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 20 7月, 2012 1 次提交
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由 Heiko Carstens 提交于
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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- 14 6月, 2012 1 次提交
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由 Heinz Graalfs 提交于
For processing under KVM it is required to detect the actual SCLP console type in order to set it as preferred console. Signed-off-by: NHeinz Graalfs <graalfs@linux.vnet.ibm.com> Acked-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Acked-by: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 11 3月, 2012 1 次提交
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由 Heiko Carstens 提交于
The external interrupt handlers have a parameter called ext_int_code. Besides the name this paramter does not only contain the ext_int_code but in addition also the "cpu address" (POP) which caused the external interrupt. To make the code a bit more obvious pass a struct instead so the called function can easily distinguish between external interrupt code and cpu address. The cpu address field however is named "subcode" since some external interrupt sources do not pass a cpu address but a different parameter (or none at all). Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 12 1月, 2012 1 次提交
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由 Rusty Russell 提交于
We were cheating with our barriers; using the smp ones rather than the real device ones. That was fine, until rpmsg came along, which is used to talk to a real device (a non-SMP CPU). Unfortunately, just putting back the real barriers (reverting d57ed95d) causes a performance regression on virtio-pci. In particular, Amos reports netbench's TCP_RR over virtio_net CPU utilization increased up to 35% while throughput went down by up to 14%. By comparison, this branch is in the noise. Reference: https://lkml.org/lkml/2011/12/11/22Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 17 11月, 2011 1 次提交
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由 Rick Jones 提交于
Add a new .bus_name to virtio_config_ops then modify virtio_net to call through to it in an ethtool .get_drvinfo routine to report bus_info in ethtool -i output which is consistent with other emulated NICs and the output of lspci. Signed-off-by: NRick Jones <rick.jones2@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 11月, 2011 1 次提交
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由 Heiko Carstens 提交于
Fix several compile errors on s390 caused by splitting module.h. Some include additions [e.g. qdio_setup.c, zfcp_qdio.c] are in anticipation of pending changes queued for s390 that increase the modular use footprint. [PG: added additional obvious changes since Heiko's original patch] Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 30 10月, 2011 2 次提交
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由 Martin Schwidefsky 提交于
to_kvmdev and dev_to_virtio both use container_of. Avoid to nest the two macros to quiet the following sparse warning: drivers/s390/kvm/kvm_virtio.c:337:20: warning: symbol '__mptr' shadows an earlier one drivers/s390/kvm/kvm_virtio.c:337:20: originally declared here Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
Make functions and data static to avoid sparse warnings. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 26 5月, 2011 2 次提交
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由 Heiko Carstens 提交于
Merge irq.c and s390_ext.c into irq.c. That way all external interrupt related functions are together. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
Interrupt sources like pfault, sclp, dasd_diag and virtio all use the service signal external interrupt subclass mask in control register 0 to enable and disable the corresponding interrupt. Because no reference counting is implemented each subsystem thinks it is the only user of subclass and sets and clears the bit like it wants. This leads to case that unloading the dasd diag module under z/VM causes both sclp and pfault interrupts to be masked. The result will be locked up system sooner or later. Fix this by introducing a new way to set (register) and clear (unregister) the service signal subclass mask bit in cr0. Also convert all drivers. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 29 4月, 2011 1 次提交
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由 Heiko Carstens 提交于
pfault, dasd diag and virtio all use the same external interrupt number. The respective interrupt handlers decide by the subcode if they are meant to handle the interrupt. Counting is currently done before looking at the subcode which means each handler counts an interrupt even if it is not handling it. Fix this by moving the kstat code after the code which looks at the subcode. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 05 1月, 2011 1 次提交
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由 Heiko Carstens 提交于
Up to now /proc/interrupts only has statistics for external and i/o interrupts but doesn't split up them any further. This patch adds a line for every single interrupt source so that it is possible to easier tell what the machine is/was doing. Part of the output now looks like this; CPU0 CPU2 CPU4 EXT: 3898 4232 2305 I/O: 782 315 245 CLK: 1029 1964 727 [EXT] Clock Comparator IPI: 2868 2267 1577 [EXT] Signal Processor TMR: 0 0 0 [EXT] CPU Timer TAL: 0 0 0 [EXT] Timing Alert PFL: 0 0 0 [EXT] Pseudo Page Fault [...] NMI: 0 1 1 [NMI] Machine Checks Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 25 10月, 2010 1 次提交
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由 Martin Schwidefsky 提交于
Read external interrupts parameters from the lowcore in the first level interrupt handler in entry[64].S. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 24 10月, 2010 2 次提交
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由 Alexander Graf 提交于
The one big missing feature in s390-virtio was hotplugging. This is no more. This patch implements hotplug add support, so you can on the fly add new devices in the guest. Keep in mind that this needs a patch for qemu to actually leverage the functionality. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Alexander Graf 提交于
Currenty the ext_param field only distinguishes between "config change" and "vring interrupt". We can do a lot more with it though, so let's enable a full byte of possible values and constants to #defines while at it. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 30 3月, 2010 1 次提交
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由 Tejun Heo 提交于
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: NTejun Heo <tj@kernel.org> Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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- 27 2月, 2010 1 次提交
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由 Heiko Carstens 提交于
Use asm offsets to make sure the offset defines to struct _lowcore and its layout don't get out of sync. Also add a BUILD_BUG_ON() which checks that the size of the structure is sane. And while being at it change those sites which use odd casts to access the current lowcore. These should use S390_lowcore instead. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 11 9月, 2009 1 次提交
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由 Hendrik Brueckner 提交于
Use a console_initcall() to initialize the s390 virtio console and clean up s390 console initialization in setup.c. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Tested-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 12 6月, 2009 2 次提交
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由 Michael S. Tsirkin 提交于
This replaces find_vq/del_vq with find_vqs/del_vqs virtio operations, and updates all drivers. This is needed for MSI support, because MSI needs to know the total number of vectors upfront. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (+ lguest/9p compile fixes)
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由 Rusty Russell 提交于
Add a linked list of all virtqueues for a virtio device: this helps for debugging and is also needed for upcoming interface change. Also, add a "name" field for clearer debug messages. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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- 07 1月, 2009 1 次提交
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由 Mark McLoughlin 提交于
Replace s390_root_dev_register() with root_device_register() etc. [Includes fix from Cornelia Huck] Signed-off-by: NMark McLoughlin <markmc@redhat.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 30 12月, 2008 3 次提交
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由 Christian Borntraeger 提交于
This patch implements config_changed for the s390 virtio transport. We use the least significant bit of the interrupt parameter field to decide, if this interrupt should call the virtio virtqueue callback or the config_changed callback. This method is compatible with old host and guest code. Old 64 bit guests will not check the bit and trigger a harmless additional vring_interrupt call. Old host code will never set this bit, this is also safe. This patch also takes care of a potential future 31 bit virtio transport for s390. On 31 bit _LC_PFAULT_INTPARM and __LC_EXT_PARAMS are identical. We exploit the alignment of the token and fold the change bit into the lsb of the token itself. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
This allows each virtio user to hand in the alignment appropriate to their virtio_ring structures. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Rusty Russell 提交于
This doesn't really matter, since s390 pagesize is 4k anyway. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 15 11月, 2008 1 次提交
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由 Christian Borntraeger 提交于
The current virtio model on s390 has the descriptor page above the main memory. The guest virtio detection will oops if the mem= parameter is used to reduce/change the memory size. We have to use real_memory_size instead of max_pfn to detect the virtio descriptor pages. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 11 10月, 2008 1 次提交
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由 Cornelia Huck 提交于
No need to define a static device for the kvm_s390 root device, just use s390_root_dev_register(). This is needed for the bus_id rework Acked-by: NCarsten Otte <cotte@de.ibm.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 01 8月, 2008 1 次提交
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由 Heiko Carstens 提交于
Fix these two false positive warnings: WARNING: vmlinux.o(.text+0x2e1cc4): Section mismatch in reference from the function s390_virtio_console_init() to the function .init.text:early_put_chars() The function s390_virtio_console_init() references the function __init early_put_chars(). This is often because s390_virtio_console_init lacks a __init annotation or the annotation of early_put_chars is wrong. WARNING: vmlinux.o(.text+0x2e1cd0): Section mismatch in reference from the function s390_virtio_console_init() to the function .init.text:virtio_cons_early_init() The function s390_virtio_console_init() references the function __init virtio_cons_early_init(). This is often because s390_virtio_console_init lacks a __init annotation or the annotation of virtio_cons_early_init is wrong. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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