linux/include/xen/interface, branch v5.7

xen: Use evtchn_type_t as a type for event channels

2020-04-07T10:12:54Z

Make event channel functions pass event channel port using evtchn_port_t type. It eliminates signed <-> unsigned conversion. Signed-off-by: Yan Yankovskyi Reviewed-by: Boris Ostrovsky Link: https://lore.kernel.org/r/20200323152343.GA28422@kbp1-lhp-F74019 Signed-off-by: Juergen Gross

xen: Replace zero-length array with flexible-array member

2020-03-05T15:41:58Z

The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20200226212612.GA4663@embeddedor Reviewed-by: Juergen Gross Signed-off-by: Boris Ostrovsky

xen/interface: re-define FRONT/BACK_RING_ATTACH()

2019-12-20T12:44:42Z

Currently these macros are defined to re-initialize a front/back ring (respectively) to values read from the shared ring in such a way that any requests/responses that are added to the shared ring whilst the front/back is detached will be skipped over. This, in general, is not a desirable semantic since most frontend implementations will eventually block waiting for a response which would either never appear or never be processed. Since the macros are currently unused, take this opportunity to re-define them to re-initialize a front/back ring using specified values. This also allows FRONT/BACK_RING_INIT() to be re-defined in terms of FRONT/BACK_RING_ATTACH() using a specified value of 0. NOTE: BACK_RING_ATTACH() will be used directly in a subsequent patch. Signed-off-by: Paul Durrant Reviewed-by: Juergen Gross Signed-off-by: Juergen Gross

xen/mcelog: add PPIN to record when available

2019-11-14T09:01:57Z

This is to augment commit 3f5a7896a5 ("x86/mce: Include the PPIN in MCE records when available"). I'm also adding "synd" and "ipid" fields to struct xen_mce, in an attempt to keep field offsets in sync with struct mce. These two fields won't get populated for now, though. Signed-off-by: Jan Beulich Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross

xen/mcelog: drop __MC_MSR_MCGCAP

2019-11-14T08:45:32Z

It has never been part of Xen's public interface, and there's therefore no guarantee for MCG_CAP's value to always be present in array entry 0. Signed-off-by: Jan Beulich Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross

xen/pvh: Add memory map pointer to hvm_start_info struct

2018-12-13T18:41:49Z

The start info structure that is defined as part of the x86/HVM direct boot ABI and used for starting Xen PVH guests would be more versatile if it also included a way to pass information about the memory map to the guest. This would allow KVM guests to share the same entry point. Signed-off-by: Maran Wilson Reviewed-by: Juergen Gross Signed-off-by: Boris Ostrovsky

x86/xen: Move pv specific parts of arch/x86/xen/mmu.c to mmu_pv.c

2018-09-03T14:50:33Z

There are some PV specific functions in arch/x86/xen/mmu.c which can be moved to mmu_pv.c. This in turn enables to build multicalls.c dependent on CONFIG_XEN_PV. Signed-off-by: Juergen Gross Signed-off-by: Thomas Gleixner Reviewed-by: Boris Ostrovsky Cc: xen-devel@lists.xenproject.org Cc: virtualization@lists.linux-foundation.org Cc: akataria@vmware.com Cc: rusty@rustcorp.com.au Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/20180828074026.820-3-jgross@suse.com

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2018-08-18T23:48:07Z

Pull input updates from Dmitry Torokhov: - a new driver for Rohm BU21029 touch controller - new bitmap APIs: bitmap_alloc, bitmap_zalloc and bitmap_free - updates to Atmel, eeti. pxrc and iforce drivers - assorted driver cleanups and fixes. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits) MAINTAINERS: Add PhoenixRC Flight Controller Adapter Input: do not use WARN() in input_alloc_absinfo() Input: mark expected switch fall-throughs Input: raydium_i2c_ts - use true and false for boolean values Input: evdev - switch to bitmap API Input: gpio-keys - switch to bitmap_zalloc() Input: elan_i2c_smbus - cast sizeof to int for comparison bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() md: Avoid namespace collision with bitmap API dm: Avoid namespace collision with bitmap API Input: pm8941-pwrkey - add resin entry Input: pm8941-pwrkey - abstract register offsets and event code Input: iforce - reorganize joystick configuration lists Input: atmel_mxt_ts - move completion to after config crc is updated Input: atmel_mxt_ts - don't report zero pressure from T9 Input: atmel_mxt_ts - zero terminate config firmware file Input: atmel_mxt_ts - refactor config update code to add context struct Input: atmel_mxt_ts - config CRC may start at T71 Input: atmel_mxt_ts - remove unnecessary debug on ENOMEM Input: atmel_mxt_ts - remove duplicate setup of ABS_MT_PRESSURE ...

docs: Fix some broken references

2018-06-15T21:10:01Z

As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai Acked-by: Masami Hiramatsu Acked-by: Stephen Boyd Acked-by: Charles Keepax Acked-by: Mathieu Poirier Reviewed-by: Coly Li Signed-off-by: Mauro Carvalho Chehab Acked-by: Jonathan Corbet

xen: Sync up with the canonical protocol definitions in Xen

2018-06-12T22:10:26Z

This is the sync up with the canonical definitions of the input, sound and display protocols in Xen. Changes to kbdif: 1. Add missing string constants for {feature|request}-raw-pointer to align with the rest of the interface file. 2. Add new XenStore feature fields, so it is possible to individually control set of exposed virtual devices for each guest OS: - set feature-disable-keyboard to 1 if no keyboard device needs to be created - set feature-disable-pointer to 1 if no pointer device needs to be created 3. Move multi-touch device parameters to backend nodes: these are described as a part of frontend's XenBus configuration nodes while they belong to backend's configuration. Fix this by moving the parameters to the proper section. Unique-id field: 1. Add unique-id XenBus entry for virtual input and display. 2. Change type of unique-id field to string for sndif to align with display and input protocols. Signed-off-by: Oleksandr Andrushchenko Reviewed-by: Juergen Gross Signed-off-by: Dmitry Torokhov