Commit Graph

783946 Commits

Author SHA1 Message Date
Dave Airlie
8ca4fff974 Only fixes coming from gvt containing "Two more BXT fixes from Colin,
one srcu locking fix and one fix for GGTT clear when destroy vGPU."
 -----BEGIN PGP SIGNATURE-----
 
 iQEcBAABAgAGBQJbomjjAAoJEPpiX2QO6xPKlaMH/0sp97hPs11qVzYNrKk3Znh8
 DJaI9IzRWfmSwLbfnpyywK7VqqErUltRSwUW+R8X2FqLXeG4shni154/jRdIMy1a
 zx7Or/8fIyvVbCEJteMvn+Lv+8ucm8tTG3YL9JqQj7blyo3T1JbtA8zsIoVgug3T
 pf4niyqcoO1plpZUsrnGKHmdrhUG+oGUkG6AWOBS8NlGgobvFY5nviyfVhdLEyG1
 JZRjruFRnVNmyIgyUCHwSN9ILO6DDykMW6xpqv7CIm8eLcImetHQvwfgEsl8mMUq
 SCT5EoUEnzSJrlRHkzoso4X7slM35wJ/JNnCN3NsmznWSs3FoIuFt3R3qsD8GlE=
 =XeR4
 -----END PGP SIGNATURE-----

Merge tag 'drm-intel-fixes-2018-09-19' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

Only fixes coming from gvt containing "Two more BXT fixes from Colin,
one srcu locking fix and one fix for GGTT clear when destroy vGPU."

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180919151915.GA6309@intel.com
2018-09-20 10:01:53 +10:00
Dave Airlie
d5b3a31b1c drm-misc-fixes for v4.19-rc5:
- Fix crash in vgem in drm_drv_uses_atomic_modeset.
 - Allow atomic drivers that don't set DRIVER_ATOMIC to create debugfs entries.
 - Fix compiler warning for unused connector_funcs.
 - Fix null pointer deref on UDL unplug.
 - Disable DRM support for sun4i's R40 for now.
   (Not all patches went in for v4.19, so it has to wait a cycle.)
 - NULL-terminate the of_device_id table in pl111.
 - Make sure vc4 NV12 planar format works when displaying an unscaled fb.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAluiXbsACgkQ/lWMcqZw
 E8P9MBAAjmltMZr9KbmtksYSDFHVldiTqwiToPDl4iZPmMDKCQQP14apJhqwFqdO
 pa+N3n7zrbR9PTUcPxt2pfT3I8J7vCGARMc66wnlPbrKDes+dkKm7KqCRFJGcyrD
 faN++FGfTBn3rsLo1iM7mLOMVE+72B5gdjcxIqewEXSxWjX9ED6N7JaVR7krcQbs
 MVT/ENvLZTRVCYla+eey+wQoZR/bh/E7HtuvqsLRaQOGSk6Go2gBzEiZiWfT+6sS
 BzEXaYKL61AKhsh68oiPB2elxVWrnPyf3liLAzoTF0MhXuGxmlu9F50jByQvDuz8
 lAzm53Hg5uFj6Ca1E81I1UDy2i5IAgaiRXGfVikeWwTsBiLgxhcRDGbQPki2rHRu
 1Cs+D/F1gE94WqWhu9ydV2rU5X/5/NdDvYH0LkeD5jI9VcB8KtK89r3zXkxh3f9B
 BfhVOGq3RTVgdAFFPujRrZCTQyyNW8zo51mYmncVykB//9awWE5nQcK3HGLh2wvL
 0Oar5oJE3UlHa5No91zMyxmJIxZVp7SE/4A7+ih1LGTu5SyaT9K718pAgv2lpakd
 HMhgF+338rCqMfL7TFqYJ2N+srXTzNRruHXdElcSg1wHbfEFejyMt0KRtv0x32qE
 9IJ1CFuJVWgQ5pXu5zbj+NLKo5kR4ow0BCvsk7HCWiqkJ5N+pY8=
 =bZgz
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-fixes-2018-09-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v4.19-rc5:
- Fix crash in vgem in drm_drv_uses_atomic_modeset.
- Allow atomic drivers that don't set DRIVER_ATOMIC to create debugfs entries.
- Fix compiler warning for unused connector_funcs.
- Fix null pointer deref on UDL unplug.
- Disable DRM support for sun4i's R40 for now.
  (Not all patches went in for v4.19, so it has to wait a cycle.)
- NULL-terminate the of_device_id table in pl111.
- Make sure vc4 NV12 planar format works when displaying an unscaled fb.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/dda393bb-f13f-8d36-711b-cacfc578e5a3@linux.intel.com
2018-09-20 10:00:46 +10:00
Drew Schmitt
8b56ee91ff kvm: selftests: Add platform_info_test
Test guest access to MSR_PLATFORM_INFO when the capability is enabled
or disabled.

Signed-off-by: Drew Schmitt <dasch@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:47 +02:00
Drew Schmitt
6fbbde9a19 KVM: x86: Control guest reads of MSR_PLATFORM_INFO
Add KVM_CAP_MSR_PLATFORM_INFO so that userspace can disable guest access
to reads of MSR_PLATFORM_INFO.

Disabling access to reads of this MSR gives userspace the control to "expose"
this platform-dependent information to guests in a clear way. As it exists
today, guests that read this MSR would get unpopulated information if userspace
hadn't already set it (and prior to this patch series, only the CPUID faulting
information could have been populated). This existing interface could be
confusing if guests don't handle the potential for incorrect/incomplete
information gracefully (e.g. zero reported for base frequency).

Signed-off-by: Drew Schmitt <dasch@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:46 +02:00
Drew Schmitt
d84f1cff90 KVM: x86: Turbo bits in MSR_PLATFORM_INFO
Allow userspace to set turbo bits in MSR_PLATFORM_INFO. Previously, only
the CPUID faulting bit was settable. But now any bit in
MSR_PLATFORM_INFO would be settable. This can be used, for example, to
convey frequency information about the platform on which the guest is
running.

Signed-off-by: Drew Schmitt <dasch@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:46 +02:00
Krish Sadhukhan
ba8e23db59 nVMX x86: Check VPID value on vmentry of L2 guests
According to section "Checks on VMX Controls" in Intel SDM vol 3C, the
following check needs to be enforced on vmentry of L2 guests:

    If the 'enable VPID' VM-execution control is 1, the value of the
    of the VPID VM-execution control field must not be 0000H.

Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:45 +02:00
Krish Sadhukhan
6de84e581c nVMX x86: check posted-interrupt descriptor addresss on vmentry of L2
According to section "Checks on VMX Controls" in Intel SDM vol 3C,
the following check needs to be enforced on vmentry of L2 guests:

   - Bits 5:0 of the posted-interrupt descriptor address are all 0.
   - The posted-interrupt descriptor address does not set any bits
     beyond the processor's physical-address width.

Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:44 +02:00
Liran Alon
e6c67d8cf1 KVM: nVMX: Wake blocked vCPU in guest-mode if pending interrupt in virtual APICv
In case L1 do not intercept L2 HLT or enter L2 in HLT activity-state,
it is possible for a vCPU to be blocked while it is in guest-mode.

According to Intel SDM 26.6.5 Interrupt-Window Exiting and
Virtual-Interrupt Delivery: "These events wake the logical processor
if it just entered the HLT state because of a VM entry".
Therefore, if L1 enters L2 in HLT activity-state and L2 has a pending
deliverable interrupt in vmcs12->guest_intr_status.RVI, then the vCPU
should be waken from the HLT state and injected with the interrupt.

In addition, if while the vCPU is blocked (while it is in guest-mode),
it receives a nested posted-interrupt, then the vCPU should also be
waken and injected with the posted interrupt.

To handle these cases, this patch enhances kvm_vcpu_has_events() to also
check if there is a pending interrupt in L2 virtual APICv provided by
L1. That is, it evaluates if there is a pending virtual interrupt for L2
by checking RVI[7:4] > VPPR[7:4] as specified in Intel SDM 29.2.1
Evaluation of Pending Interrupts.

Note that this also handles the case of nested posted-interrupt by the
fact RVI is updated in vmx_complete_nested_posted_interrupt() which is
called from kvm_vcpu_check_block() -> kvm_arch_vcpu_runnable() ->
kvm_vcpu_running() -> vmx_check_nested_events() ->
vmx_complete_nested_posted_interrupt().

Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:44 +02:00
Paolo Bonzini
5bea5123cb KVM: VMX: check nested state and CR4.VMXE against SMM
VMX cannot be enabled under SMM, check it when CR4 is set and when nested
virtualization state is restored.

This should fix some WARNs reported by syzkaller, mostly around
alloc_shadow_vmcs.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:43 +02:00
Sebastian Andrzej Siewior
822f312d47 kvm: x86: make kvm_{load|put}_guest_fpu() static
The functions
	kvm_load_guest_fpu()
	kvm_put_guest_fpu()

are only used locally, make them static. This requires also that both
functions are moved because they are used before their implementation.
Those functions were exported (via EXPORT_SYMBOL) before commit
e5bb40251a ("KVM: Drop kvm_{load,put}_guest_fpu() exports").

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:43 +02:00
Vitaly Kuznetsov
a1efa9b700 x86/hyper-v: rename ipi_arg_{ex,non_ex} structures
These structures are going to be used from KVM code so let's make
their names reflect their Hyper-V origin.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:42 +02:00
Sean Christopherson
d264ee0c2e KVM: VMX: use preemption timer to force immediate VMExit
A VMX preemption timer value of '0' is guaranteed to cause a VMExit
prior to the CPU executing any instructions in the guest.  Use the
preemption timer (if it's supported) to trigger immediate VMExit
in place of the current method of sending a self-IPI.  This ensures
that pending VMExit injection to L1 occurs prior to executing any
instructions in the guest (regardless of nesting level).

When deferring VMExit injection, KVM generates an immediate VMExit
from the (possibly nested) guest by sending itself an IPI.  Because
hardware interrupts are blocked prior to VMEnter and are unblocked
(in hardware) after VMEnter, this results in taking a VMExit(INTR)
before any guest instruction is executed.  But, as this approach
relies on the IPI being received before VMEnter executes, it only
works as intended when KVM is running as L0.  Because there are no
architectural guarantees regarding when IPIs are delivered, when
running nested the INTR may "arrive" long after L2 is running e.g.
L0 KVM doesn't force an immediate switch to L1 to deliver an INTR.

For the most part, this unintended delay is not an issue since the
events being injected to L1 also do not have architectural guarantees
regarding their timing.  The notable exception is the VMX preemption
timer[1], which is architecturally guaranteed to cause a VMExit prior
to executing any instructions in the guest if the timer value is '0'
at VMEnter.  Specifically, the delay in injecting the VMExit causes
the preemption timer KVM unit test to fail when run in a nested guest.

Note: this approach is viable even on CPUs with a broken preemption
timer, as broken in this context only means the timer counts at the
wrong rate.  There are no known errata affecting timer value of '0'.

[1] I/O SMIs also have guarantees on when they arrive, but I have
    no idea if/how those are emulated in KVM.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
[Use a hook for SVM instead of leaving the default in x86.c - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:42 +02:00
Sean Christopherson
f459a707ed KVM: VMX: modify preemption timer bit only when arming timer
Provide a singular location where the VMX preemption timer bit is
set/cleared so that future usages of the preemption timer can ensure
the VMCS bit is up-to-date without having to modify unrelated code
paths.  For example, the preemption timer can be used to force an
immediate VMExit.  Cache the status of the timer to avoid redundant
VMREAD and VMWRITE, e.g. if the timer stays armed across multiple
VMEnters/VMExits.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:51:41 +02:00
Sean Christopherson
4c008127e4 KVM: VMX: immediately mark preemption timer expired only for zero value
A VMX preemption timer value of '0' at the time of VMEnter is
architecturally guaranteed to cause a VMExit prior to the CPU
executing any instructions in the guest.  This architectural
definition is in place to ensure that a previously expired timer
is correctly recognized by the CPU as it is possible for the timer
to reach zero and not trigger a VMexit due to a higher priority
VMExit being signalled instead, e.g. a pending #DB that morphs into
a VMExit.

Whether by design or coincidence, commit f4124500c2 ("KVM: nVMX:
Fully emulate preemption timer") special cased timer values of '0'
and '1' to ensure prompt delivery of the VMExit.  Unlike '0', a
timer value of '1' has no has no architectural guarantees regarding
when it is delivered.

Modify the timer emulation to trigger immediate VMExit if and only
if the timer value is '0', and document precisely why '0' is special.
Do this even if calibration of the virtual TSC failed, i.e. VMExit
will occur immediately regardless of the frequency of the timer.
Making only '0' a special case gives KVM leeway to be more aggressive
in ensuring the VMExit is injected prior to executing instructions in
the nested guest, and also eliminates any ambiguity as to why '1' is
a special case, e.g. why wasn't the threshold for a "short timeout"
set to 10, 100, 1000, etc...

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:46 +02:00
Andy Shevchenko
a101c9d63e KVM: SVM: Switch to bitmap_zalloc()
Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:45 +02:00
Tianyu Lan
9a9845867c KVM/MMU: Fix comment in walk_shadow_page_lockless_end()
kvm_commit_zap_page() has been renamed to kvm_mmu_commit_zap_page()
This patch is to fix the commit.

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:45 +02:00
Lei Yang
6bd317d3c8 kvm: selftests: use -pthread instead of -lpthread
I run into the following error

testing/selftests/kvm/dirty_log_test.c:285: undefined reference to `pthread_create'
testing/selftests/kvm/dirty_log_test.c:297: undefined reference to `pthread_join'
collect2: error: ld returned 1 exit status

my gcc version is gcc version 4.8.4
"-pthread" would work everywhere

Signed-off-by: Lei Yang <Lei.Yang@windriver.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:44 +02:00
Wei Yang
83b20b28c6 KVM: x86: don't reset root in kvm_mmu_setup()
Here is the code path which shows kvm_mmu_setup() is invoked after
kvm_mmu_create(). Since kvm_mmu_setup() is only invoked in this code path,
this means the root_hpa and prev_roots are guaranteed to be invalid. And
it is not necessary to reset it again.

    kvm_vm_ioctl_create_vcpu()
        kvm_arch_vcpu_create()
            vmx_create_vcpu()
                kvm_vcpu_init()
                    kvm_arch_vcpu_init()
                        kvm_mmu_create()
        kvm_arch_vcpu_setup()
            kvm_mmu_setup()
                kvm_init_mmu()

This patch set reset_roots to false in kmv_mmu_setup().

Fixes: 50c28f21d0
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:44 +02:00
Junaid Shahid
d35b34a9a7 kvm: mmu: Don't read PDPTEs when paging is not enabled
kvm should not attempt to read guest PDPTEs when CR0.PG = 0 and
CR4.PAE = 1.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:43 +02:00
Vitaly Kuznetsov
d176620277 x86/kvm/lapic: always disable MMIO interface in x2APIC mode
When VMX is used with flexpriority disabled (because of no support or
if disabled with module parameter) MMIO interface to lAPIC is still
available in x2APIC mode while it shouldn't be (kvm-unit-tests):

PASS: apic_disable: Local apic enabled in x2APIC mode
PASS: apic_disable: CPUID.1H:EDX.APIC[bit 9] is set
FAIL: apic_disable: *0xfee00030: 50014

The issue appears because we basically do nothing while switching to
x2APIC mode when APIC access page is not used. apic_mmio_{read,write}
only check if lAPIC is disabled before proceeding to actual write.

When APIC access is virtualized we correctly manipulate with VMX controls
in vmx_set_virtual_apic_mode() and we don't get vmexits from memory writes
in x2APIC mode so there's no issue.

Disabling MMIO interface seems to be easy. The question is: what do we
do with these reads and writes? If we add apic_x2apic_mode() check to
apic_mmio_in_range() and return -EOPNOTSUPP these reads and writes will
go to userspace. When lAPIC is in kernel, Qemu uses this interface to
inject MSIs only (see kvm_apic_mem_write() in hw/i386/kvm/apic.c). This
somehow works with disabled lAPIC but when we're in xAPIC mode we will
get a real injected MSI from every write to lAPIC. Not good.

The simplest solution seems to be to just ignore writes to the region
and return ~0 for all reads when we're in x2APIC mode. This is what this
patch does. However, this approach is inconsistent with what currently
happens when flexpriority is enabled: we allocate APIC access page and
create KVM memory region so in x2APIC modes all reads and writes go to
this pre-allocated page which is, btw, the same for all vCPUs.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-09-20 00:26:43 +02:00
zhong jiang
e5264c433c gpu: do not double put device node in zx_drm_probe
for_each_available_child_of_node will get and put the node properly,
the following of_node_put will lead to the double put. So just
remove it.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1534472646-10368-1-git-send-email-zhongjiang@huawei.com
2018-09-19 14:24:05 -07:00
Greg Kroah-Hartman
eb9a29f9e5 Various bug fixes for nct6775 driver
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJbon6nAAoJEMsfJm/On5mByxoP/3Z5fQWqWKZHlOYgej2xPR8I
 9gMTwCca95awTgD/0toiQLOlwfevIwbdk0MWJSkr3fIqoFY/hOwwvF3mqOo/i6oN
 f8/oFTE0IKoaW0glNWkKK+kZb3d1WopJ1SP9is6KGYhx3b462mS0/i/on6VgQ1Yv
 HitLKs+UF+8rEDnXRMECnbg3gw8lznoxExOSIsxW3m8uWIgIQECdN1DHDza9QYux
 4CLf1gHhk4q4eCgZCRXVPM4NeQlXrPCevnTbLkBUfqR1lCNohqJf2oNcDZYLlCYs
 uQAcByLkfPcifP7a9zMB7QVsWrZmOFgiTIS+Ct9d1XhA2n1+hUA+W3up79JXpr/n
 GS2V1b9KktL5XyRIUmRR5OoV09x2eAuuwLfq/d/Ff7z2KT+gZHdJqz1II0lzivtb
 xgNql/JBjmQvu1fX+g3PYqtXY/BVyNtUMWOtNnfgTBX39Z7L28P1HPCdRjglVKZi
 JVGD5G8XYhVfB3RMSE7b19lFOeRDvnoCNCiU4fmKPRI8IeT6aQUT5sOwjkxtrKkP
 pmSaHqYgawWvTojpD9DrhwHR77WIi1n482OFwB5XjCxc70LaJ0RC0wtRCPhQ1HtB
 cOY/JUt0biqHoX3UD1tcjMl+x3sQ23TViI5hik3iOJ7rwg6gwjL/Mj+LzJRKPfZ0
 906DisKO8TUM/tJlULx9
 =rHpH
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-linus-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Guenter writes:
   "Various bug fixes for nct6775 driver"
2018-09-19 22:59:30 +02:00
Greg Kroah-Hartman
6ad49fa199 SCSI fixes on 20180919
A couple of small but important fixes, one affecting big endian and
 the other fixing a BUG_ON in scatterlist processing.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCW6IviSYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishdrPAP4h8ouR
 z4qewZsVK9hwySouIfC2xAPRu7aFUBEPw12O4gEAshqLg/61w7PYS0t9NjQVpRw3
 nR6xr6ymTbImn09w1Wg=
 =MQ30
 -----END PGP SIGNATURE-----

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

James writes:
  "SCSI fixes on 20180919

   A couple of small but important fixes, one affecting big endian and
   the other fixing a BUG_ON in scatterlist processing.

   Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>"
2018-09-19 22:34:22 +02:00
Christian König
fd39554792 drm/amdgpu: move reserving GDS/GWS/OA into common code
We don't need that in the per ASIC code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:39:02 -05:00
Christian König
c832c346cd drm/amdgpu: initialize GDS/GWS/OA domains even when they are zero sized
Stops crashing on SI.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:56 -05:00
Christian König
77a2faa55c drm/amdgpu: fix up GDS/GWS/OA shifting
That only worked by pure coincident. Completely remove the shifting and
always apply correct PAGE_SHIFT.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:48 -05:00
Christian König
403009bfba drm/amdgpu: fix shadow BO restoring
Don't grab the reservation lock any more and simplify the handling quite
a bit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:41 -05:00
Christian König
c33adbc728 drm/amdgpu: always recover VRAM during GPU recovery
It shouldn't add much overhead and we should make sure that critical
VRAM content is always restored.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:35 -05:00
Christian König
7fcb0657ff drm/amdgpu: shadow BOs don't need any alignment
They aren't directly used by the hardware.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:29 -05:00
Christian König
1668867742 drm/amdgpu: always enable shadow BOs v2
Even when GPU recovery is disabled we could run into a manually
triggered recovery.

v2: keep accidental removed comments

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:23 -05:00
Christian König
4947b2f248 drm/amdgpu: stop pipelining VM PDs/PTs moves
We are going to need this for recoverable page fault handling and it
makes shadow handling during GPU reset much more easier.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:17 -05:00
Christian König
3e14bedc58 drm/amdgpu: remove fence fallback
DC doesn't seem to have a fallback path either.

So when interrupts doesn't work any more we are pretty much busted no
matter what.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:10 -05:00
Evan Quan
32f2a0d117 drm/amd/powerplay: retrieve the updated clock table after OD
With OD settings applied, the clock table will be updated accordingly.
We need to retrieve the new clock tables then.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:38:02 -05:00
Evan Quan
b1f82cb212 drm/amd/powerplay: update OD to take voltage value instead of offset
With the latest SMC fw, we are able to get the voltage value for
specific frequency point. So, we update the OD relates to take
absolute voltage instead of offset.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:55 -05:00
Evan Quan
8a1304a5b4 drm/amd/powerplay: update OD feature judgement
Update the conditions to judge whether an OD feature
should be supported on vega20.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:48 -05:00
Hawking Zhang
27e39d3dd3 drm/amdgpu: fix unknown vram mem type for vega20
vega20 should use umc_info v3_3 instead of v3_1. There are
serveral versions of umc_info for vega series. Compared to
various versions of these structures, vram_info strucure is
unified for vega series. The patch switch to query mem_type
from vram_info structure for all the vega series dGPU.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:39 -05:00
Hawking Zhang
801281fe09 drm/amdgpu: update vram_info structure in atomfirmware.h
atomfirmware has structure changes in varm_info. Updated it
to the latest one.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:31 -05:00
Mathieu Malaterre
1f81fbc4ce drm/radeon: change function signature to pass full range
In function ‘radeon_process_i2c_ch’ a comparison of a u8 value against
255 is done. Since it is always false, change the signature of this
function to use an `int` instead, which match the type used in caller:
`radeon_atom_hw_i2c_xfer`.

Fix the following warning triggered with W=1:

  CC [M]  drivers/gpu/drm/radeon/atombios_i2c.o
  drivers/gpu/drm/radeon/atombios_i2c.c: In function ‘radeon_process_i2c_ch’:
  drivers/gpu/drm/radeon/atombios_i2c.c:71:11: warning: comparison is always false due to limited range of data type [-Wtype-limits]
   if (num > ATOM_MAX_HW_I2C_READ) {
           ^

Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:25 -05:00
A. Wilcox
066689161a drm/amdgpu: use processed values for counting
adev->gfx.rlc has the values from rlc_hdr already processed by
le32_to_cpu.  Using the rlc_hdr values on big-endian machines causes
a kernel Oops due to writing well outside of the array (0x24000000
instead of 0x24).

Signed-off-by: A. Wilcox <AWilcox@Wilcox-Tech.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:10 -05:00
Tom St Denis
ddaf501347 drm/amd/amdgpu: Avoid fault when allocating an empty buffer object
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:37:04 -05:00
Christian König
5297572806 drm/amdgpu: drop size check
We no don't allocate zero sized kernel BOs any longer.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:36:57 -05:00
Christian König
21a7e77f77 drm/amdgpu: don't allocate zero sized kernel BOs
Just free the BO if the size should be zero.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:36:50 -05:00
Christian König
3b2de69944 drm/amdgpu: stop crashing on GDS/GWS/OA eviction
Simply ignore any copying here.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:36:03 -05:00
Christian König
0ee8685392 drm/amdgpu: add GDS, GWS and OA debugfs files
Additional to the existing files for VRAM and GTT.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:35:07 -05:00
Christian König
769f846e14 drm/amdgpu: fix parameter documentation for amdgpu_vm_free_pts
The function was modified without updating the documentation.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:35:01 -05:00
Christian König
cb90b97bb3 drm/amdgpu: add amdgpu_vm_entries_mask v2
We can't get the mask for the root directory from the number of entries.

So add a new function to avoid that problem.

v2: fix typo in mask

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-19 12:34:41 -05:00
Juergen Gross
d59f532480 xen: issue warning message when out of grant maptrack entries
When a driver domain (e.g. dom0) is running out of maptrack entries it
can't map any more foreign domain pages. Instead of silently stalling
the affected domUs issue a rate limited warning in this case in order
to make it easier to detect that situation.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2018-09-19 11:27:42 -04:00
Boris Ostrovsky
70513d5875 xen/x86/vpmu: Zero struct pt_regs before calling into sample handling code
Otherwise we may leak kernel stack for events that sample user
registers.

Reported-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: stable@vger.kernel.org
2018-09-19 11:26:53 -04:00
Lee, Shawn C
e884818cc0 drm: add LG eDP panel to quirk database
The N value was computed by kernel driver that based on synchronous clock
mode. But only specific N value (0x8000) would be acceptable for
LG LP140WF6-SPM1 eDP panel which is running at asynchronous clock mode.
With the other N value, Tcon will enter BITS mode and display black screen.
Add this panel into quirk database and give particular N value when
calculate M/N divider.

v2: no update
v3: add lost commit messages back for version 2
v4: send patch to both intel-gfx and dri-devel

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Lee, Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1536733371-25004-4-git-send-email-shawn.c.lee@intel.com
2018-09-19 16:44:12 +03:00
Lee, Shawn C
53ca2edcf0 drm: Change limited M/N quirk to constant N quirk.
Some DP dongles in particular seem to be fussy about too large
link M/N values. Set specific value for N divider can resolve
this issue per dongle vendor's comment. So configure N as
constant value (0x8000) to instead of reduce M/N formula when
specific DP dongle connected.

v2: add more comments for issue description and fix typo.
v3: add lost commit messages back for version 2
v4: send patch to both intel-gfx and dri-devel

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Cooper Chiou <cooper.chiou@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Tested-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Lee, Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1536733371-25004-3-git-send-email-shawn.c.lee@intel.com
2018-09-19 16:44:12 +03:00