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* Add flip done event support for sprite plane on SKL platform.
* Fix bug #1452, "Call Trace:handle_default_event_virt+0xef/0x100
[i915]" while booting up guest.
Signed-off-by: Xu Han <xu.han@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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We also need reset vGPU virtual display emulation. Since all vreg has
been cleared, we need reset display related vreg to reflect our display
setting.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Cc: Ping Gao <ping.a.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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We need to be careful to only update addr mode for gvt shadow context
descriptor but keep other valid config. This fixes GPU hang caused by
invalid descriptor submitted for gvt workload.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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We need to properly setup alignment for GTT start/end/size
as required. Fixed warning from i915 gem.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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In function dispatch_workload(), if it fail before calling
intel_gvt_scan_and_shadow_wa_ctx(), the indirect ctx will
not be shadowed so no cleaup need. wa_ctx->indirect_ctx.obj
indicate whether indirect_ctx is shadowed. The obj is null
if it is unshadowed.
BUG: unable to handle kernel NULL pointer dereference at
00000000000001a0
IP: complete_execlist_workload+0x2c9/0x3e0 [i915]
Oops: 0002 [#1] SMP
task: ffff939546d2d880 task.stack: ffffbd9b82ac4000
RIP: 0010:complete_execlist_workload+0x2c9/0x3e0 [i915]
RSP: 0018:ffffbd9b82ac7dd8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff9393c725b540 RCX: 0000000000000006
RDX: 0000000000000007 RSI: 0000000000000202 RDI: ffff939559c8dd00
RBP: ffffbd9b82ac7e18 R08: 0000000000000001 R09: 000000000120dd8f
R10: 0000000000000000 R11: 000000000120dd8f R12: ffff9393c725b540
R13: ffff9393c725b618 R14: ffffbd9b81f0d000 R15: ffff939520e0e000
FS: 0000000000000000(0000) GS:ffff939559c80000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000001a0 CR3: 000000043d664000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
workload_thread+0x312/0xd70 [i915]
? __wake_up_sync+0x20/0x20
? wake_atomic_t_function+0x60/0x60
kthread+0x101/0x140
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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gvt driver has a check which doesn't allow to use gvt when host
gpu iommu is enabled. This check can be removed after enable the
iommu support in gvt
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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When host i915 iommu enabled, gvt needs to use a mapped pfn in PTE entry
So before kvm returns the pfn, map this pfn and return the mapped address
which is so called iova.
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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MFN usually refers to "Machine Frame Number" in virtulization world.
Currently GVT-g populates the shadow PPGTT/GGTT page table with MFN
according to the translation between MFN and Guest PFN.
When host IOMMU is enabled, GPU DMA transactions go through the IOMMU,
GPU needs an IOVA<->MFN mapping to walk the shadow page table in host
main memory.
This patch will map a page in IOMMU page table before using it in shadow
page table and release the map when a shadow page is going to be freed.
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Reduce the line of logs in below functions and log friendly.
o intel_vgpu_reg_imr_handler
o intel_vgpu_reg_master_irq_handler
o intel_vgpu_reg_ier_handler
o intel_vgpu_reg_iir_handler
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Remove a redundant end of line in below log.
'will complete workload %p\n, status: %d\n'
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Remove below unimportant log which is too noisy.
'no current vgpu search from q head'
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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"caps.buf" is always NULL here and "caps.size" is always zero. The code
is a no-op and can be removed.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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As now gvt init after knowing hw resource info, we can determine vGPU
type from machine size instead of pre-defined value.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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As now gvt init is late after MMIO initialization, use normal MMIO
read function for initial firmware exposure if no available firmware
loaded.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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We only depend on pvinfo register for GVT-g state detection,
not require hypervisor host detect any more.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Prepare to remove detect_host() hook. Move intel iommu detection early
in intel_gvt_init().
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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The current virtual edid can only support the resolution up
to 1024x768. Update the virtual edid so that can support more
resoltions. With this new virtual edid, resolution can
be up to 1920x1200.
V2: add detailed modeline description in edid code comments
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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git://anongit.freedesktop.org/git/drm-intel into drm-next
Final block of feature work for 4.11:
- gen8 pd cleanup from Matthew Auld
- more cleanups for view/vma (Chris)
- dmc support on glk (Anusha Srivatsa)
- use core crc api (Tomue)
- track wedged requests using fence.error (Chris)
- lots of psr fixes (Nagaraju, Vathsala)
- dp mst support, acked for merging through drm-intel by Takashi
(Libin)
- huc loading support, including uapi for libva to use it (Anusha
Srivatsa)
* tag 'drm-intel-next-2017-01-23' of git://anongit.freedesktop.org/git/drm-intel: (111 commits)
drm/i915: Update DRIVER_DATE to 20170123
drm/i915: reinstate call to trace_i915_vma_bind
drm/i915: Assert that created vma has a whole number of pages
drm/i915: Assert the drm_mm_node is allocated when on the VM lists
drm/i915: Treat an error from i915_vma_instance() as unlikely
drm/i915: Reject vma creation larger than address space
drm/i915: Use common LRU inactive vma bumping for unpin_from_display
drm/i915: Do an unlocked wait before set-cache-level ioctl
drm/i915/huc: Assert that HuC vma is placed in GuC accessible range
drm/i915/huc: Avoid attempting to authenticate non-existent fw
drm/i915: Set adjustment to zero on Up/Down interrupts if freq is already max/min
drm/i915: Remove the double handling of 'flags from intel_mode_from_pipe_config()
drm/i915: Remove crtc->config usage from intel_modeset_readout_hw_state()
drm/i915: Release temporary load-detect state upon switching
drm/i915: Remove i915_gem_object_to_ggtt()
drm/i915: Remove i915_vma_create from VMA API
drm/i915: Add a check that the VMA instance we lookup matches the request
drm/i915: Rename some warts in the VMA API
drm/i915: Track pinned vma in intel_plane_state
drm/i915/get_params: Add HuC status to getparams
...
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next
Backmerge Linus master to get the connector locking revert.
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux: (645 commits)
sysctl: fix proc_doulongvec_ms_jiffies_minmax()
Revert "drm/probe-helpers: Drop locking from poll_enable"
MAINTAINERS: add Dan Streetman to zbud maintainers
MAINTAINERS: add Dan Streetman to zswap maintainers
mm: do not export ioremap_page_range symbol for external module
mn10300: fix build error of missing fpu_save()
romfs: use different way to generate fsid for BLOCK or MTD
frv: add missing atomic64 operations
mm, page_alloc: fix premature OOM when racing with cpuset mems update
mm, page_alloc: move cpuset seqcount checking to slowpath
mm, page_alloc: fix fast-path race with cpuset update or removal
mm, page_alloc: fix check for NULL preferred_zone
kernel/panic.c: add missing \n
fbdev: color map copying bounds checking
frv: add atomic64_add_unless()
mm/mempolicy.c: do not put mempolicy before using its nodemask
radix-tree: fix private list warnings
Documentation/filesystems/proc.txt: add VmPin
mm, memcg: do not retry precharge charges
proc: add a schedule point in proc_pid_readdir()
...
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According to kmem_cache_sanity_check(), spaces are not allowed in the
name of a cache and results in a kernel oops with CONFIG_DEBUG_VM.
Convert to underscores.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Per the ABI specification[1], each mdev_supported_types entry should
have an available_instances, with an "s", not available_instance.
[1] Documentation/ABI/testing/sysfs-bus-vfio-mdev
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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set_gma_to_bb_cmd() is completely bogus - it is (incorrectly) applying
the rules to read a GTT offset from a command as opposed to writing the
GTT offset. And to cap it all set_gma_to_bb_cmd() is called within a list
iterator of the most strange construction.
Fixes: be1da7070aea ("drm/i915/gvt: vGPU command scanner")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Yulei Zhang <yulei.zhang@intel.com>
Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.10-rc1+
Tested-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Shadow batch buffer is used to shadow the privileged batch
buffer which is submitted by vGPU's workload. This patch is
used to unmark this functionality.
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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intel_gvt_reset_vgpu_locked
GT reset and FLR share some operations and they are both implemented in
our new function intel_gvt_reset_vgpu_locked(). This patch rewrite the
gt reset handler using this new function.
Besides, this new implementation fixed the old issue in GT reset. The
old implementation reset GGTT entries which is illegal. We only clear
GGTT entries at PCI level reset.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Our function tests found several issues related to reusing vGPU
instance. They are qemu reboot failure, guest tdr after reboot, host
hang when reboot guest. All these issues are caused by dirty status
inherited from last VM.
This patch fix all these issues by resetting a virtual GPU before VM
use it. The reset logical is put into a low level function
_intel_gvt_reset_vgpu(), which supports Device Model Level Reset, Full
GT Reset and Per-Engine Reset.
vGPU Device Model Level Reset (DMLR) simulates the PCI reset to reset
the whole vGPU to default state as when it is created, including GTT,
execlist, scratch pages, cfg space, mmio space, pvinfo page, scheduler
and fence registers. The ultimate goal of vGPU DMLR is that reuse a
vGPU instance by different virtual machines. When we reassign a vGPU
to a virtual machine we must issue such reset first.
Full GT Reset and Per-Engine GT Reset are soft reset flow for GPU engines
(Render, Blitter, Video, Video Enhancement). It is defined by GPU Spec.
Unlike the FLR, GT reset only reset particular resource of a vGPU per
the reset request. Guest driver can issue a GT reset by programming
the virtual GDRST register to reset specific virtual GPU engine or all
engines.
Since vGPU DMLR and GT reset can share some code so we implement both
these two into one single function intel_gvt_reset_vgpu_locked(). The
parameter dmlr is to identify if we will do FLR or GT reset. The
parameter engine_mask is to specific the engines that need to be
resetted. If value ALL_ENGINES is given for engine_mask, it means
the caller requests a full gt reset that we will reset all virtual
GPU engines.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Reviewed-by: Jike Song <jike.song@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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This patch introduces a new function intel_vgpu_reset_mmio() to
reset vGPU MMIO space (virtual registers of the vGPU). The default
values are loaded as firmware during gvt inititiation.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Move the mmio space inititation function setup_vgpu_mmio()
and cleanup function clean_vgpu_mmio() in vgpu.c to dedicated
source file mmio.c, and rename them as intel_vgpu_init_mmio()
and intel_vgpu_clean_mmio() respectively.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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This patch introduces a new function intel_vgpu_reset_cfg_space()
to reset vGPU configuration space. This function will unmap gttmmio
and aperture if they are mapped before. Then entire cfg space will
be restored to default values.
Currently we only do such reset when vGPU is not owned by any VM
so we simply restore entire cfg space to default value, not following
the PCIe FLR spec that some fields should remain unchanged.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Move the configuration space inititation function setup_vgpu_cfg_space()
in vgpu.c to dedicated source file cfg_space.c, and rename the function
as intel_vgpu_init_cfg_space().
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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This patch introduces a new function intel_vgpu_reset_gtt() to reset
the all GTT related status, including GGTT, PPGTT, scratch page. This
function can free all shadowed PPGTT, clear all GGTT entry, and clear
scratch page to all zero. After this, we can ensure no gtt related
information can be leakaged from one VM to anothor one when assign
vgpu instance across different VMs (not simultaneously).
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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This patch introudces a new function intel_vgpu_reset_resource() to
reset allocated vgpu resources by intel_vgpu_alloc_resource(). So far
we only need clear the fence registers. The function _clear_vgpu_fence()
will reset both virtual and physical fence registers to 0.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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When we evict from the GTT to make room for an object, the hole we
create is put onto the MRU stack inside the drm_mm range manager. On the
next search pass, we can speed up a PIN_HIGH allocation by referencing
that stack for the new hole.
v2: Pull together the 3 identical implements (ahem, a couple were
outdated) into a common routine for allocating a node and evicting as
necessary.
v3: Detect invalid calls to i915_gem_gtt_insert()
v4: kerneldoc
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170111112312.31493-1-chris@chris-wilson.co.uk
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git://anongit.freedesktop.org/git/drm-intel into drm-next
More 4.11 stuff, holidays edition (i.e. not much):
- docs and cleanups for shared dpll code (Ander)
- some kerneldoc work (Chris)
- fbc by default on gen9+ too, yeah! (Paulo)
- fixes, polish and other small things all over gem code (Chris)
- and a few small things on top
Plus a backmerge, because Dave was enjoying time off too.
* tag 'drm-intel-next-2017-01-09' of git://anongit.freedesktop.org/git/drm-intel: (275 commits)
drm/i915: Update DRIVER_DATE to 20170109
drm/i915: Drain freed objects for mmap space exhaustion
drm/i915: Purge loose pages if we run out of DMA remap space
drm/i915: Fix phys pwrite for struct_mutex-less operation
drm/i915: Simplify testing for am-I-the-kernel-context?
drm/i915: Use range_overflows()
drm/i915: Use fixed-sized types for stolen
drm/i915: Use phys_addr_t for the address of stolen memory
drm/i915: Consolidate checks for memcpy-from-wc support
drm/i915: Only skip requests once a context is banned
drm/i915: Move a few more utility macros to i915_utils.h
drm/i915: Clear ret before unbinding in i915_gem_evict_something()
drm/i915/guc: Exclude the upper end of the Global GTT for the GuC
drm/i915: Move a few utility macros into a separate header
drm/i915/execlists: Reorder execlists register enabling
drm/i915: Assert that we do create the deferred context
drm/i915: Assert all timeline requests are gone before fini
drm/i915: Revoke fenced GTT mmapings across GPU reset
drm/i915: enable FBC on gen9+ too
drm/i915: actually drive the BDW reserved IDs
...
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In gvt, almost all memory allocations are in sleepable contexts. It's
fault-prone to use GFP_ATOMIC everywhere. Replace it with GFP_KERNEL
wherever possible.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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The vgpu_create() routine we called returns meaningful errors to indicate
failures, so we'd better to pass it to our caller, the mdev framework,
whereby the sysfs is able to tell userspace what happened.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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According to the spec, ACPI OpRegion must be placed at a physical address
below 4G. That is, for a vGPU it must be associated with a GPA below 4G,
but on host side, it doesn't matter where the backing pages actually are.
So when allocating pages from host, the GFP_DMA32 flag is unnecessary.
Also the allocation is from a sleepable context, so GFP_ATOMIC is also
unnecessary.
This patch also removes INTEL_GVT_OPREGION_PORDER and use get_order()
instead.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Once idr_alloc gets called data is allocated within the idr list, if
any error occurs afterwards, we should undo that by idr_remove on the
error path.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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An idr should be initialized before use and destroyed afterwards.
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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The vgpu->running_workload_num is used to determine whether a vgpu has
any workload running or not. So we should make sure the workload is
really done before we dec running_workload_num. Function
complete_current_workload is not the right place to do it, since this
function is still processing the workload. This patch move the dec op
afterward.
v2: move dec op before wake_up(&scheduler->workload_complete_wq) (Min He)
Signed-off-by: Changbin Du <changbin.du@intel.com>
Reviewed-by: Min He <min.he@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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In the function workload_thread(), we invoke complete_current_workload()
to cleanup the just processed workload (workload will be freed there).
So we cannot access workload->req after that. This patch move
complete_current_workload() afterward.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Remove duplicated definition for resource size in aperture_gm.c
which are already defined in gvt.h. Need only one to take effect.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Previous high mem size initialized for vGPU type was too small which caused
failure for some VMs. This trys to take minimal value of 384MB for each VM and
enlarge default high mem size to make guest driver happy.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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In function intel_vgpu_emulate_mmio_read, the untracked mmio register is
dumped through kernel log, but the register value is not correct. This
patch fixes this issue.
V2: fix the fromat warning from checkpatch.pl.
Signed-off-by: Pei Zhang <pei.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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The readq and writeq are already offered by drm_os_linux.h. So we can
use them directly whithout dectecting their presence. This patch removed
the duplicated code.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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All mmio handlers should return a negetive value for failure, not 1.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Return ealier for a invalid access, else it would false set
tlb flag for RCS.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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The current prototype of new_mmio_info() uses void* for parameters read
and write, which are functions with precise calling conventions
(argument types and return type). Write down these conventions in
new_mmio_info() definition.
This has been reported by the following warnings when clang is used to
build the kernel:
drivers/gpu/drm/i915/gvt/handlers.c:124:21: error: pointer type
mismatch ('void *' and 'int (*)(struct intel_vgpu *, unsigned int,
void *, unsigned int)') [-Werror,-Wpointer-type-mismatch]
info->read = read ? read : intel_vgpu_default_mmio_read;
^ ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/gvt/handlers.c:125:23: error: pointer type
mismatch ('void *' and 'int (*)(struct intel_vgpu *, unsigned int,
void *, unsigned int)') [-Werror,-Wpointer-type-mismatch]
info->write = write ? write : intel_vgpu_default_mmio_write;
^ ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This allows the compiler to detect that sbi_ctl_mmio_write() returns a
"bool" value instead of an expected "int" one. Fix this.
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Pull VFIO fixes from Alex Williamson:
- Add mtty sample driver properly into build system (Alex Williamson)
- Restore type1 mapping performance after mdev (Alex Williamson)
- Fix mdev device race (Alex Williamson)
- Cleanups to the mdev ABI used by vendor drivers (Alex Williamson)
- Build fix for old compilers (Arnd Bergmann)
- Fix sample driver error path (Dan Carpenter)
- Handle pci_iomap() error (Arvind Yadav)
- Fix mdev ioctl return type (Paul Gortmaker)
* tag 'vfio-v4.10-rc3' of git://github.com/awilliam/linux-vfio:
vfio-mdev: fix non-standard ioctl return val causing i386 build fail
vfio-pci: Handle error from pci_iomap
vfio-mdev: fix some error codes in the sample code
vfio-pci: use 32-bit comparisons for register address for gcc-4.5
vfio-mdev: Make mdev_device private and abstract interfaces
vfio-mdev: Make mdev_parent private
vfio-mdev: de-polute the namespace, rename parent_device & parent_ops
vfio-mdev: Fix remove race
vfio/type1: Restore mapping performance with mdev support
vfio-mdev: Fix mtty sample driver building
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Backmerge Linux 4.10-rc2 to resync with our -fixes cherry-picks. I've
done the backmerge directly because Dave is on vacation.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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Abstract access to mdev_device so that we can define which interfaces
are public rather than relying on comments in the structure.
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Jike Song <jike.song@intel.com>
Reviewed by: Kirti Wankhede <kwankhede@nvidia.com>
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