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2021-05-04virtio_pci_modern: __force cast the notify mappingMichael S. Tsirkin
When switching virtio_pci_modern to use a helper for mappings we lost an __iomem tag. We should restore it. However, virtio_pci_modern is playing tricks by hiding an iomem pointer in a regular vq->priv pointer. Which is okay as long as it's all contained within a single file, but we need to __force cast the value otherwise we'll get sparse warnings. Reported-by: kernel test robot <lkp@intel.com> Fixes: 7dca6c0ea96b ("virtio-pci library: switch to use vp_modern_map_vq_notify()") Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03Enlisted oprofile version line removedBhaskar Chowdhury
Enlisted oprofile version line removed. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://lore.kernel.org/r/35c4436f0f1b3072d3016148ce1461905b6f782b.1619181632.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03oprofiled version output line removed from the listBhaskar Chowdhury
Oprofiled version output line removed from the list. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://lore.kernel.org/r/8d1928ff2fea29d67143d235839a5e845e4402c9.1619181632.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03Removed the oprofiled version optionBhaskar Chowdhury
Removed the oprofiled version option Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://lore.kernel.org/r/c98fa38b74bdd8ab16d35862895dac5f5a535f94.1619181632.git.unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03docs: reporting-issues.rst: CC subsystem and maintainers on regressionsThorsten Leemhuis
When reporting a regression, users ideally should CC the subsystem and its maintainers, as that will ensure they get aware of the regression quickly. And if the culprit is known, they should also CC everyone who signed if off; the text mentioned the latter in once place already, but forgot to do so in two other areas where it's relevant. While fixing this also remind readers to check the mailing list archives for issues that need to be reported to a bug tracker, as someone might have reported it by mail only. All of this got triggered by a recent report where these changes would have made a difference. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Link: https://lore.kernel.org/lkml/dff6badf-58f5-98c8-871c-94d901ac6919@leemhuis.info/ Link: https://lore.kernel.org/lkml/CAJZ5v0hX2StQVttAciHYH-urUH+Hi92z9z2ZbcNgQPt0E2Jpwg@mail.gmail.com/ Link: https://lore.kernel.org/r/dd13f10c30e79e550215e53a8103406daec4e593.1618482489.git.linux@leemhuis.info Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03docs: correct URL to bios and kernel developer's guideAnatoly Pugachev
correct URL to bios and kernel developer's guide on amd.com site Signed-off-by: Anatoly Pugachev <matorola@gmail.com> Link: https://lore.kernel.org/r/20210428104851.GA10572@u164.east.ru [jc: fixed resulting sphinx warning] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03ktest: Add KTEST section to MAINTAINERS fileSteven Rostedt (VMware)
As I wanted to add John Hawley as a co-maintainer for ktest, I found that there never was a KTEST section in the MAINTAINERS file. Add one! Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Re-arrange the code blocks for better discoverabilityJohn 'Warthog9' Hawley (VMware)
Perl, as with most scripting languages, is fairly flexible in how / where you can define things, and it will (for the most part) do what you would expect it to do. This however can lead to situations, like with ktest, where things get muddled over time. This pushes the variable definitions back up to the top, followed by functions, with the main script executables down at the bottom, INSTEAD of being somewhat mish-mashed together in certain places. This mostly has the advantage of making it more obvious where things are initially defined, what functions are there, and ACTUALLY where the main script starts executing, and should make this a little more approachable. Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Further consistency cleanupsJohn 'Warthog9' Hawley (VMware)
This cleans up some additional whitespace pieces that to be more consistent, as well as moving a curly brace around, and some 'or' statements to match the rest of the file (usually or goes at the end of the line vs. at the beginning) Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Fixing indentation to match expected patternJohn 'Warthog9' Hawley (VMware)
This is a followup to "ktest: Adding editor hints to improve consistency" to actually adjust the existing indentation to match the, now, expected pattern (first column 4 spaces, 2nd tab, 3rd tab + 4 spaces, etc). This should, at least help, keep things consistent going forward now. Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Adding editor hints to improve consistencyJohn 'Warthog9' Hawley (VMware)
Emacs and Vi(m) have different styles of dealing with perl syntax which can lead to slightly inconsistent indentation, and makes the code slightly harder to read. Emacs assumes a more perl recommended standard of 4 spaces (1 column) or tab (two column) indentation. Vi(m) tends to favor just normal spaces or tabs depending on what was being used. This gives the basic hinting to Emacs and Vim to do what is expected to be basically consistent. Emacs: - Explicitly flip into perl mode, cperl would require more adjustments Vi(m): - Set softtabs=4 which will flip it over to doing indentation the way you would expect from Emacs Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Add example config for using VMware VMsJohn 'Warthog9' Hawley (VMware)
This duplicates the KVM/Qemu config with specific notes for how to use it with VMware VMs on Workstation, Player, or Fusion. The main thing to be aware of is how the serial port is exposed which is a unix pipe, and will need something like ncat to get into ktest's monitoring Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03ktest: Minor cleanup with uninitialized variable $build_optionsJohn 'Warthog9' Hawley (VMware)
Signed-off-by: John 'Warthog9' Hawley (VMware) <warthog9@eaglescrag.net> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-05-03docs/core-api: Consistent code styleYanteng Si
all `example` in this file should be replaced with ``example``. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Acked-by: Matthias Maennich <maennich@google.com> Link: https://lore.kernel.org/r/20210428100720.1076276-1-siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03docs/zh_CN: Adjust order and content of zh_CN/index.rstWu XiangCheng
Adjust order and content of zh_CN/index.rst to make it clear, complete introductions and TODOLists. Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Link: https://lore.kernel.org/r/20210430122234.GA655@bobwxc.top Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03Documentation: input: joydev file correctionsRandy Dunlap
Fix typos, grammar, punctuation in Documentation/input/joydev/*.rst files. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20210429063137.20232-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-05-03Merge tag 'for-5.13/parisc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc architecture updates from Helge Deller: - switch to generic syscall header scripts - minor typo fix in setup.c * tag 'for-5.13/parisc' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Fix typo in setup.c parisc: syscalls: switch to generic syscallhdr.sh parisc: syscalls: switch to generic syscalltbl.sh
2021-05-03Merge tag 'csky-for-linus-5.13-rc1' of git://github.com/c-sky/csky-linuxLinus Torvalds
Pull arch/csky updates from Guo Ren: "Just cleanups" * tag 'csky-for-linus-5.13-rc1' of git://github.com/c-sky/csky-linux: csky: uaccess.h: Coding convention with asm generic csky: fix syscache.c fallthrough warning csky: Fixup typos csky: Remove duplicate include in arch/csky/kernel/entry.S
2021-05-03Merge tag 'leds-5.13-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds Pull LED updates from Pavel Machek: "Nothing too exciting here, just some fixes" * tag 'leds-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: leds: pca9532: Assign gpio base dynamically leds: trigger: pattern: Switch to using the new API kobj_to_dev() leds: LEDS_BLINK_LGM should depend on X86 leds: lgm: Fix spelling mistake "prepate" -> "prepare" MAINTAINERS: Remove Dan Murphy's bouncing email leds-lm3642: convert comma to semicolon leds: rt4505: Add support for Richtek RT4505 flash LED controller leds: rt4505: Add DT binding document for Richtek RT4505 leds: Kconfig: LEDS_CLASS is usually selected. leds: lgm: Improve Kconfig help leds: lgm: fix gpiolib dependency
2021-05-03Merge tag 'rtc-5.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Mostly small fixes and two drivers gaining alarm support. Summary: Subsystem: - UIE emulation has been reworked to avoid calling driver callbacks when it is known it will not work Drivers: - ab-eoz9: add alarm support - pcf8523: add alarm support" * tag 'rtc-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (27 commits) rtc: sysfs: check features instead of ops rtc: omap: use rtc_write to access OMAP_RTC_OSC_REG rtc: s5m: Remove reference to parent's device pdata rtc: ds1307: Fix wday settings for rx8130 rtc: pcf8523: report oscillator failures rtc: pcf8523: add alarm support rtc: pcf8523: remove useless define rtc: rtc_update_irq_enable: rework UIE emulation rtc: ds1307: remove flags rtc: ds1307: replace HAS_ALARM by RTC_FEATURE_ALARM rtc: imx-sc: remove .read_alarm rtc: ds1511: remove unused function rtc: fsl-ftm-alarm: add MODULE_TABLE() rtc: rtc-spear: replace spin_lock_irqsave by spin_lock in hard IRQ dt-bindings: rtc: qcom-pm8xxx-rtc: Add qcom pm8xxx rtc bindings rtc: pm8xxx: Add RTC support for PMIC PMK8350 rtc: ab-eoz9: make use of RTC_FEATURE_ALARM rtc: ab-eoz9: add alarm support rtc: ab-eoz9: set regmap max_register rtc: pcf85063: fallback to parent of_node ...
2021-05-03Merge tag 'trace-v5.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "New feature: - A new "func-no-repeats" option in tracefs/options directory. When set the function tracer will detect if the current function being traced is the same as the previous one, and instead of recording it, it will keep track of the number of times that the function is repeated in a row. And when another function is recorded, it will write a new event that shows the function that repeated, the number of times it repeated and the time stamp of when the last repeated function occurred. Enhancements: - In order to implement the above "func-no-repeats" option, the ring buffer timestamp can now give the accurate timestamp of the event as it is being recorded, instead of having to record an absolute timestamp for all events. This helps the histogram code which no longer needs to waste ring buffer space. - New validation logic to make sure all trace events that access dereferenced pointers do so in a safe way, and will warn otherwise. Fixes: - No longer limit the PIDs of tasks that are recorded for "saved_cmdlines" to PID_MAX_DEFAULT (32768), as systemd now allows for a much larger range. This caused the mapping of PIDs to the task names to be dropped for all tasks with a PID greater than 32768. - Change trace_clock_global() to never block. This caused a deadlock. Clean ups: - Typos, prototype fixes, and removing of duplicate or unused code. - Better management of ftrace_page allocations" * tag 'trace-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (32 commits) tracing: Restructure trace_clock_global() to never block tracing: Map all PIDs to command lines ftrace: Reuse the output of the function tracer for func_repeats tracing: Add "func_no_repeats" option for function tracing tracing: Unify the logic for function tracing options tracing: Add method for recording "func_repeats" events tracing: Add "last_func_repeats" to struct trace_array tracing: Define new ftrace event "func_repeats" tracing: Define static void trace_print_time() ftrace: Simplify the calculation of page number for ftrace_page->records some more ftrace: Store the order of pages allocated in ftrace_page tracing: Remove unused argument from "ring_buffer_time_stamp() tracing: Remove duplicate struct declaration in trace_events.h tracing: Update create_system_filter() kernel-doc comment tracing: A minor cleanup for create_system_filter() kernel: trace: Mundane typo fixes in the file trace_events_filter.c tracing: Fix various typos in comments scripts/recordmcount.pl: Make vim and emacs indent the same scripts/recordmcount.pl: Make indent spacing consistent tracing: Add a verifier to check string pointers for trace events ...
2021-05-03PCI: brcmstb: Use reset/rearm instead of deassert/assertJim Quinlan
The Broadcom STB PCIe RC uses a reset control "rescal" for certain chips. The "rescal" implements a "pulse reset" so using assert/deassert is wrong for this device. Instead, we use reset/rearm. We need to use rearm so that we can reset it after a suspend/resume cycle; w/o using "rearm", the "rescal" device will only ever fire once. Of course for suspend/resume to work we also need to put the reset/rearm calls in the suspend and resume routines. Fixes: 740d6c3708a9 ("PCI: brcmstb: Add control of rescal reset") Link: https://lore.kernel.org/r/20210430152156.21162-4-jim2101024@gmail.com Signed-off-by: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
2021-05-03ata: ahci_brcm: Fix use of BCM7216 reset controllerJim Quinlan
This driver may use one of two resets controllers. Keep them in separate variables to keep things simple. The reset controller "rescal" is shared between the AHCI driver and the PCIe driver for the BrcmSTB 7216 chip. Use devm_reset_control_get_optional_shared() to handle this sharing. [bhelgaas: add Jens' ack from v5 posting] Fixes: 272ecd60a636 ("ata: ahci_brcm: BCM7216 reset is self de-asserting") Fixes: c345ec6a50e9 ("ata: ahci_brcm: Support BCM7216 reset controller name") Link: https://lore.kernel.org/r/20210430152156.21162-3-jim2101024@gmail.com Signed-off-by: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jens Axboe <axboe@kernel.dk> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
2021-05-03Merge branch 'work.recursive_removal' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull another simple_recursive_removal() update from Al Viro: "I missed one case when simple_recursive_removal() was introduced" * 'work.recursive_removal' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: qib_fs: switch to simple_recursive_removal()
2021-05-03reset: add missing empty function reset_control_rearm()Jim Quinlan
All other functions are defined for when CONFIG_RESET_CONTROLLER is not set. Fixes: 557acb3d2cd9 ("reset: make shared pulsed reset controls re-triggerable") Link: https://lore.kernel.org/r/20210430152156.21162-2-jim2101024@gmail.com Signed-off-by: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org # v5.11+
2021-05-03Merge branch 'work.file' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull receive_fd update from Al Viro: "Cleanup of receive_fd mess" * 'work.file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: split receive_fd_replace from __receive_fd
2021-05-03cifs: use echo_interval even when connection not ready.Shyam Prasad N
When the tcp connection is not ready to send requests, we keep retrying echo with an interval of zero. This seems unnecessary, and this fix changes the interval between echoes to what is specified as echo_interval. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-03cifs: detect dead connections only when echoes are enabled.Shyam Prasad N
We can detect server unresponsiveness only if echoes are enabled. Echoes can be disabled under two scenarios: 1. The connection is low on credits, so we've disabled echoes/oplocks. 2. The connection has not seen any request till now (other than negotiate/sess-setup), which is when we enable these two, based on the credits available. So this fix will check for dead connection, only when echo is enabled. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> CC: <stable@vger.kernel.org> # v5.8+ Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-03smb3.1.1: allow dumping keys for multiuser mountsSteve French
When mounted multiuser it is hard to dump keys for the other sessions which makes it hard to debug using network traces (e.g. using wireshark). Suggested-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-03smb3.1.1: allow dumping GCM256 keys to improve debugging of encrypted sharesSteve French
Previously we were only able to dump CCM or GCM-128 keys (see "smbinfo keys" e.g.) to allow network debugging (e.g. wireshark) of mounts to SMB3.1.1 encrypted shares. But with the addition of GCM-256 support, we have to be able to dump 32 byte instead of 16 byte keys which requires adding an additional ioctl for that. Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-03cifs: add shutdown supportSteve French
Various filesystem support the shutdown ioctl which is used by various xfstests. The shutdown ioctl sets a flag on the superblock which prevents open, unlink, symlink, hardlink, rmdir, create etc. on the file system until unmount and remounted. The two flags supported in this patch are: FSOP_GOING_FLAGS_LOGFLUSH and FSOP_GOING_FLAGS_NOLOGFLUSH which require very little other than blocking new operations (since we do not cache writes to metadata on the client with cifs.ko). FSOP_GOING_FLAGS_DEFAULT is not supported yet, but could be added in the future but would need to call syncfs or equivalent to write out pending data on the mount. With this patch various xfstests now work including tests 043 through 046 for example. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2021-05-03cifs: Deferred close for filesRohith Surabattula
When file is closed, SMB2 close request is not sent to server immediately and is deferred for acregmax defined interval. When file is reopened by same process for read or write, the file handle is reused if an oplock is held. When client receives a oplock/lease break, file is closed immediately if reference count is zero, else oplock is downgraded. Signed-off-by: Rohith Surabattula <rohiths@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-03Hexagon: add target builtins to kernelSid Manning
Add the compiler-rt builtins like memcpy to the hexagon kernel. Signed-off-by: Sid Manning <sidneym@codeaurora.org> Add SYM_FUNC_START/END, ksyms exports Signed-off-by: Brian Cain <bcain@codeaurora.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com>
2021-05-03Hexagon: remove DEBUG from comet configSid Manning
Remove CONFIG_DEBUG_INFO from comet configuration. Signed-off-by: Sid Manning <sidneym@codeaurora.org> Signed-off-by: Brian Cain <bcain@codeaurora.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2021-05-03Hexagon: change jumps to must-extend in futex_atomic_*Sid Manning
Cross-section jumps from .fixup section must be extended. Signed-off-by: Sid Manning <sidneym@codeaurora.org> Signed-off-by: Brian Cain <bcain@codeaurora.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2021-05-03Hexagon: fix build errorsSid Manning
Fix type-o in ptrace.c. Add missing include: asm/hexagon_vm.h Remove superfluous cast. Replace 'p3_0' with 'preds'. Signed-off-by: Sid Manning <sidneym@codeaurora.org> Add -mlong-calls to build flags. Signed-off-by: Brian Cain <bcain@codeaurora.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2021-05-03parisc: Fix typo in setup.cHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de>
2021-05-03vDPA/ifcvf: get_config_size should return dev specific config sizeZhu Lingshan
get_config_size() should return the size based on the decected device type. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20210419063326.3748-4-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vDPA/ifcvf: enable Intel C5000X-PL virtio-block for vDPAZhu Lingshan
This commit enabled Intel FPGA SmartNIC C5000X-PL virtio-block for vDPA. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20210419063326.3748-3-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vDPA/ifcvf: deduce VIRTIO device ID when probeZhu Lingshan
This commit deduces VIRTIO device ID as device type when probe, then ifcvf_vdpa_get_device_id() can simply return the ID. ifcvf_vdpa_get_features() and ifcvf_vdpa_get_config_size() can work properly based on the device ID. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Link: https://lore.kernel.org/r/20210419063326.3748-2-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2021-05-03vdpa_sim_blk: add support for vdpa management toolStefano Garzarella
Enable the user to create vDPA block simulator devices using the vdpa management tool: # Show vDPA supported devices $ vdpa mgmtdev show vdpasim_blk: supported_classes block # Create a vDPA block device named as 'blk0' from the management # device vdpasim: $ vdpa dev add mgmtdev vdpasim_blk name blk0 # Show the info of the 'blk0' device just created $ vdpa dev show blk0 -jp { "dev": { "blk0": { "type": "block", "mgmtdev": "vdpasim_blk", "vendor_id": 0, "max_vqs": 1, "max_vq_size": 256 } } } # Delete the vDPA device after its use $ vdpa dev del blk0 Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-15-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2021-05-03vdpa_sim_blk: handle VIRTIO_BLK_T_GET_IDStefano Garzarella
Handle VIRTIO_BLK_T_GET_ID request, always answering the "vdpa_blk_sim" string. Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-14-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vdpa_sim_blk: implement ramdisk behaviourStefano Garzarella
The previous implementation wrote only the status of each request. This patch implements a more accurate block device simulator, providing a ramdisk-like behavior and adding input validation. Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-13-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vdpa: add vdpa simulator for block deviceMax Gurtovoy
This will allow running vDPA for virtio block protocol. It's a preliminary implementation with a simple request handling: for each request, only the status (last byte) is set. It's always set to VIRTIO_BLK_S_OK. Also input validation is missing and will be added in the next commits. Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> [sgarzare: various cleanups/fixes] Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-12-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vhost/vdpa: Remove the restriction that only supports virtio-net devicesXie Yongji
Since the config checks are done by the vDPA drivers, we can remove the virtio-net restriction and we should be able to support all kinds of virtio devices. <linux/virtio_net.h> is not needed anymore, but we need to include <linux/slab.h> to avoid compilation failures. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-11-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2021-05-03vhost/vdpa: use get_config_size callback in vhost_vdpa_config_validate()Stefano Garzarella
Let's use the new 'get_config_size()' callback available instead of using the 'virtio_id' to get the size of the device config space. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-10-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2021-05-03vdpa: add get_config_size callback in vdpa_config_opsStefano Garzarella
This new callback is used to get the size of the configuration space of vDPA devices. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-9-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>
2021-05-03vdpa_sim: cleanup kiovs in vdpasim_free()Stefano Garzarella
vringh_getdesc_iotlb() allocates memory to store the kvec, that is freed with vringh_kiov_cleanup(). vringh_getdesc_iotlb() is able to reuse a kvec previously allocated, so in order to avoid to allocate the kvec for each request, we are not calling vringh_kiov_cleanup() when we finished to handle a request, but we should call it when we free the entire device. Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-8-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vringh: add vringh_kiov_length() helperStefano Garzarella
This new helper returns the total number of bytes covered by a vringh_kiov. Suggested-by: Jason Wang <jasowang@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-7-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-03vringh: implement vringh_kiov_advance()Stefano Garzarella
In some cases, it may be useful to provide a way to skip a number of bytes in a vringh_kiov. Let's implement vringh_kiov_advance() for this purpose, reusing the code from vringh_iov_xfer(). We replace that code calling the new vringh_kiov_advance(). Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20210315163450.254396-6-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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