This will allow the KVM to report such errors (e.g -ENOMEM)
to the userspace.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201001112954.6258-3-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Return 1 on errors that are caused by wrong guest behavior
(which will inject #GP to the guest)
And return a negative error value on issues that are
the kernel's fault (e.g -ENOMEM)
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201001112954.6258-2-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These should be const, so make it so.
Signed-off-by: Joe Perches <joe@perches.com>
Message-Id: <ed95eef4f10fc1317b66936c05bc7dd8f943a6d5.1601770305.git.joe@perches.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As vcpu->arch.cpuid_entries is now allocated dynamically, the only
remaining use for KVM_MAX_CPUID_ENTRIES is to check KVM_SET_CPUID/
KVM_SET_CPUID2 input for sanity. Since it was reported that the
current limit (80) is insufficient for some CPUs, bump
KVM_MAX_CPUID_ENTRIES and use an arbitrary value '256' as the new
limit.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20201001130541.1398392-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The current limit for guest CPUID leaves (KVM_MAX_CPUID_ENTRIES, 80)
is reported to be insufficient but before we bump it let's switch to
allocating vcpu->arch.cpuid_entries[] array dynamically. Currently,
'struct kvm_cpuid_entry2' is 40 bytes so vcpu->arch.cpuid_entries is
3200 bytes which accounts for 1/4 of the whole 'struct kvm_vcpu_arch'
but having it pre-allocated (for all vCPUs which we also pre-allocate)
gives us no real benefits.
Another plus of the dynamic allocation is that we now do kvm_check_cpuid()
check before we assign anything to vcpu->arch.cpuid_nent/cpuid_entries so
no changes are made in case the check fails.
Opportunistically remove unneeded 'out' labels from
kvm_vcpu_ioctl_set_cpuid()/kvm_vcpu_ioctl_set_cpuid2() and return
directly whenever possible.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20201001130541.1398392-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
As a preparatory step to allocating vcpu->arch.cpuid_entries dynamically
make kvm_check_cpuid() check work with an arbitrary 'struct kvm_cpuid_entry2'
array.
Currently, when kvm_check_cpuid() fails we reset vcpu->arch.cpuid_nent to
0 and this is kind of weird, i.e. one would expect CPUIDs to remain
unchanged when KVM_SET_CPUID[2] call fails.
No functional change intended. It would've been possible to move the updated
kvm_check_cpuid() in kvm_vcpu_ioctl_set_cpuid2() and check the supplied
input before we start updating vcpu->arch.cpuid_entries/nent but we
can't do the same in kvm_vcpu_ioctl_set_cpuid() as we'll have to copy
'struct kvm_cpuid_entry' entries first. The change will be made when
vcpu->arch.cpuid_entries[] array becomes allocated dynamically.
Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20201001130541.1398392-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Change-Id: I0c6355b09fedf8f9cc4cc5f51be418e2c1c82b7b
Message-Id: <20200818152429.1923996-5-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM unconditionally provides PV features to the guest, regardless of the
configured CPUID. An unwitting guest that doesn't check
KVM_CPUID_FEATURES before use could access paravirt features that
userspace did not intend to provide. Fix this by checking the guest's
CPUID before performing any paravirtual operations.
Introduce a capability, KVM_CAP_ENFORCE_PV_FEATURE_CPUID, to gate the
aforementioned enforcement. Migrating a VM from a host w/o this patch to
a host with this patch could silently change the ABI exposed to the
guest, warranting that we default to the old behavior and opt-in for
the new one.
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Change-Id: I202a0926f65035b872bfe8ad15307c026de59a98
Message-Id: <20200818152429.1923996-4-oupton@google.com>
Reviewed-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Small change to avoid meaningless duplication in the subsequent patch.
No functional change intended.
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Change-Id: I77ab9cdad239790766b7a49d5cbae5e57a3005ea
Message-Id: <20200818152429.1923996-3-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
No functional change intended.
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Change-Id: I7cbe71069db98d1ded612fd2ef088b70e7618426
Message-Id: <20200818152429.1923996-2-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM was switched to interrupt-based mechanism for 'page ready' event
delivery in Linux-5.8 (see commit 2635b5c4a0 ("KVM: x86: interrupt based
APF 'page ready' event delivery")) and #PF (ab)use for 'page ready' event
delivery was removed. Linux guest switched to this new mechanism
exclusively in 5.9 (see commit b1d405751c ("KVM: x86: Switch KVM guest to
using interrupts for page ready APF delivery")) so it is not possible to
get #PF for a 'page ready' event even when the guest is running on top
of an older KVM (APF mechanism won't be enabled). Update the comment in
exc_page_fault() to reflect the new reality.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20201002154313.1505327-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Let KVM_WERROR depend on KVM, so it doesn't show in menuconfig alone.
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Message-Id: <20201001112014.9561-1-mcroce@linux.microsoft.com>
Fixes: 4f337faf1c ("KVM: allow disabling -Werror")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Allowing userspace to intercept reads to x2APIC MSRs when APICV is
fully enabled for the guest simply can't work. But more in general,
the LAPIC could be set to in-kernel after the MSR filter is setup
and allowing accesses by userspace would be very confusing.
We could in principle allow userspace to intercept reads and writes to TPR,
and writes to EOI and SELF_IPI, but while that could be made it work, it
would still be silly.
Cc: Alexander Graf <graf@amazon.com>
Cc: Aaron Lewis <aaronlewis@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Rework the resetting of the MSR bitmap for x2APIC MSRs to ignore userspace
filtering. Allowing userspace to intercept reads to x2APIC MSRs when
APICV is fully enabled for the guest simply can't work; the LAPIC and thus
virtual APIC is in-kernel and cannot be directly accessed by userspace.
To keep things simple we will in fact forbid intercepting x2APIC MSRs
altogether, independent of the default_allow setting.
Cc: Alexander Graf <graf@amazon.com>
Cc: Aaron Lewis <aaronlewis@google.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20201005195532.8674-3-sean.j.christopherson@intel.com>
[Modified to operate even if APICv is disabled, adjust documentation. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Merge tag 'linux-watchdog-5.10-rc1' of git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- Add Toshiba Visconti watchdog driver
- it87_wdt: add IT8772 + IT8784
- several fixes and improvements
* tag 'linux-watchdog-5.10-rc1' of git://www.linux-watchdog.org/linux-watchdog:
watchdog: Add Toshiba Visconti watchdog driver
watchdog: bindings: Add binding documentation for Toshiba Visconti watchdog device
watchdog: it87_wdt: add IT8784 ID
watchdog: sp5100_tco: Enable watchdog on Family 17h devices if disabled
watchdog: sp5100: Fix definition of EFCH_PM_DECODEEN3
watchdog: renesas_wdt: support handover from bootloader
watchdog: imx7ulp: Watchdog should continue running for wait/stop mode
watchdog: rti: Simplify with dev_err_probe()
watchdog: davinci: Simplify with dev_err_probe()
watchdog: cadence: Simplify with dev_err_probe()
watchdog: remove unneeded inclusion of <uapi/linux/sched/types.h>
watchdog: Use put_device on error
watchdog: Fix memleak in watchdog_cdev_register
watchdog: imx7ulp: Strictly follow the sequence for wdog operations
watchdog: it87_wdt: add IT8772 ID
watchdog: pcwd_usb: Avoid GFP_ATOMIC where it is not needed
drivers: watchdog: rdc321x_wdt: Fix race condition bugs
Subsystem:
- new generic DT properties: aux-voltage-chargeable, trickle-voltage-millivolt
New driver:
- Microcrystal RV-3032
Drivers:
- ds1307: use aux-voltage-chargeable
- r9701, rx8010: modernization of the driver
- rv3028: fix clock output, trickle resistor values, RAM configuration
registers
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Merge tag 'rtc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"A new driver this cycle is making the bulk of the changes and the
rx8010 driver has been rework to use the modern APIs.
Summary:
Subsystem:
- new generic DT properties: aux-voltage-chargeable,
trickle-voltage-millivolt
New driver:
- Microcrystal RV-3032
Drivers:
- ds1307: use aux-voltage-chargeable
- r9701, rx8010: modernization of the driver
- rv3028: fix clock output, trickle resistor values, RAM
configuration registers"
* tag 'rtc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits)
rtc: r9701: set range
rtc: r9701: convert to devm_rtc_allocate_device
rtc: r9701: stop setting RWKCNT
rtc: r9701: remove useless memset
rtc: r9701: stop setting a default time
rtc: r9701: remove leftover comment
rtc: rv3032: Add a driver for Microcrystal RV-3032
dt-bindings: rtc: rv3032: add RV-3032 bindings
dt-bindings: rtc: add trickle-voltage-millivolt
rtc: rv3028: ensure ram configuration registers are saved
rtc: rv3028: factorize EERD bit handling
rtc: rv3028: fix trickle resistor values
rtc: rv3028: fix clock output support
rtc: mt6397: Remove unused member dev
rtc: rv8803: simplify the return expression of rv8803_nvram_write
rtc: meson: simplify the return expression of meson_vrtc_probe
rtc: rx8010: rename rx8010_init_client() to rx8010_init()
rtc: ds1307: enable rx8130's backup battery, make it chargeable optionally
rtc: ds1307: consider aux-voltage-chargeable
rtc: ds1307: store previous charge default per chip
...
Pull dmi update from Jean Delvare.
* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
Replace HTTP links with HTTPS ones: DMI/SMBIOS SUPPORT
Pull i2c updates from Wolfram Sang:
- if a host can be a client, too, the I2C core can now use it to
emulate SMBus HostNotify support (STM32 and R-Car added this so far)
- also for client mode, a testunit has been added. It can create rare
situations on the bus, so host controllers can be tested
- a binding has been added to mark the bus as "single-master". This
allows for better timeout detections
- new driver for Mellanox Bluefield
- massive refactoring of the Tegra driver
- EEPROMs recognized by the at24 driver can now have custom names
- rest is driver updates
* 'i2c/for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (80 commits)
Documentation: i2c: add testunit docs to index
i2c: tegra: Improve driver module description
i2c: tegra: Clean up whitespaces, newlines and indentation
i2c: tegra: Clean up and improve comments
i2c: tegra: Clean up printk messages
i2c: tegra: Clean up variable names
i2c: tegra: Improve formatting of variables
i2c: tegra: Check errors for both positive and negative values
i2c: tegra: Factor out hardware initialization into separate function
i2c: tegra: Factor out register polling into separate function
i2c: tegra: Factor out packet header setup from tegra_i2c_xfer_msg()
i2c: tegra: Factor out error recovery from tegra_i2c_xfer_msg()
i2c: tegra: Rename wait/poll functions
i2c: tegra: Remove "dma" variable from tegra_i2c_xfer_msg()
i2c: tegra: Remove redundant check in tegra_i2c_issue_bus_clear()
i2c: tegra: Remove likely/unlikely from the code
i2c: tegra: Remove outdated barrier()
i2c: tegra: Clean up variable types
i2c: tegra: Reorder location of functions in the code
i2c: tegra: Clean up probe function
...
- a patch that removes crush_workspace_mutex (myself). CRUSH
computations are no longer serialized and can run in parallel.
- a couple new filesystem client metrics for "ceph fs top" command
(Xiubo Li)
- a fix for a very old messenger bug that affected the filesystem,
marked for stable (myself)
- assorted fixups and cleanups throughout the codebase from Jeff
and others.
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Merge tag 'ceph-for-5.10-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
- a patch that removes crush_workspace_mutex (myself). CRUSH
computations are no longer serialized and can run in parallel.
- a couple new filesystem client metrics for "ceph fs top" command
(Xiubo Li)
- a fix for a very old messenger bug that affected the filesystem,
marked for stable (myself)
- assorted fixups and cleanups throughout the codebase from Jeff and
others.
* tag 'ceph-for-5.10-rc1' of git://github.com/ceph/ceph-client: (27 commits)
libceph: clear con->out_msg on Policy::stateful_server faults
libceph: format ceph_entity_addr nonces as unsigned
libceph: fix ENTITY_NAME format suggestion
libceph: move a dout in queue_con_delay()
ceph: comment cleanups and clarifications
ceph: break up send_cap_msg
ceph: drop separate mdsc argument from __send_cap
ceph: promote to unsigned long long before shifting
ceph: don't SetPageError on readpage errors
ceph: mark ceph_fmt_xattr() as printf-like for better type checking
ceph: fold ceph_update_writeable_page into ceph_write_begin
ceph: fold ceph_sync_writepages into writepage_nounlock
ceph: fold ceph_sync_readpages into ceph_readpage
ceph: don't call ceph_update_writeable_page from page_mkwrite
ceph: break out writeback of incompatible snap context to separate function
ceph: add a note explaining session reject error string
libceph: switch to the new "osd blocklist add" command
libceph, rbd, ceph: "blacklist" -> "blocklist"
ceph: have ceph_writepages_start call pagevec_lookup_range_tag
ceph: use kill_anon_super helper
...
Like TCP, MPTCP cannot be compiled as a module. Obviously, MPTCP IPv6'
support also depends on CONFIG_IPV6. But not all functions from IPv6
code are exported.
To simplify the code and reduce modifications outside MPTCP, it was
decided from the beginning to support MPTCP with IPv6 only if
CONFIG_IPV6 was built inlined. That's also why CONFIG_MPTCP_IPV6 was
created. More modifications are needed to support CONFIG_IPV6=m.
Even if it was not explicit, until recently, we were forcing CONFIG_IPV6
to be built-in because we had "select IPV6" in Kconfig. Now that we have
"depends on IPV6", we have to explicitly set "IPV6=y" to force
CONFIG_IPV6 not to be built as a module.
In other words, we can now only have CONFIG_MPTCP_IPV6=y if
CONFIG_IPV6=y.
Note that the new dependency might hide the fact IPv6 is not supported
in MPTCP even if we have CONFIG_IPV6=m. But selecting IPV6 like we did
before was forcing it to be built-in while it was maybe not what the
user wants.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 010b430d5d ("mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it")
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/r/20201021105154.628257-1-matthieu.baerts@tessares.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Drop return value checking for debugfs_create() calls (Greg
Kroah-Hartman)
- Convert debugfs "ports" file to use DEFINE_SEQ_ATTRIBUTE() (Liu Shixin)
* remotes/lorenzo/pci/tegra:
PCI: tegra: Convert to use DEFINE_SEQ_ATTRIBUTE macro
PCI: tegra: No need to check return value of debugfs_create() functions
- Document R8A774A1, R8A774B1, R8A774E1 endpoint support in DT (Lad
Prabhakar)
- Add R8A774A1, R8A774B1, R8A774E1 (RZ/G2M, RZ/G2N, RZ/G2H) IDs to endpoint
test (Lad Prabhakar)
- Add device tree support for R8A7742 (Lad Prabhakar)
- Use "fallthrough" pseudo-keyword (Gustavo A. R. Silva)
* remotes/lorenzo/pci/rcar:
dt-bindings: PCI: rcar: Add device tree support for r8a7742
PCI: rcar-gen2: Use fallthrough pseudo-keyword
misc: pci_endpoint_test: Add Device ID for RZ/G2H PCIe controller
dt-bindings: pci: rcar-pci-ep: Document r8a774e1
misc: pci_endpoint_test: Add Device ID for RZ/G2M and RZ/G2N PCIe controllers
dt-bindings: pci: rcar-pci-ep: Document r8a774a1 and r8a774b1
- Make sure PCIe is reset before init to work around QSDK U-Boot issue
(Ansuel Smith)
- Set iproc affinity mask on MSI interrupts (Mark Tomlinson)
* remotes/lorenzo/pci/qcom:
PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0
- Return -EPROBE_DEFER in case the gpio isn't ready (Bean Huo)
* remotes/lorenzo/pci/kirin:
PCI: kirin: Return -EPROBE_DEFER in case the gpio isn't ready
- Set affinity mask on MSI interrupts (Mark Tomlinson)
- Simplify by using module_bcma_driver (Liu Shixin)
- Fix 'using integer as NULL pointer' warning (Krzysztof Wilczyński)
* remotes/lorenzo/pci/iproc:
PCI: iproc: Fix using plain integer as NULL pointer in iproc_pcie_pltfm_probe
PCI: iproc: Use module_bcma_driver to simplify the code
PCI: iproc: Set affinity mask on MSI interrupts
- Use "fallthrough" pseudo-keyword (Gustavo A. R. Silva)
- Drop redundant error messages after devm_clk_get() (Anson Huang)
* remotes/lorenzo/pci/imx6:
PCI: imx6: Do not output error message when devm_clk_get() failed with -EPROBE_DEFER
PCI: imx6: Use fallthrough pseudo-keyword
- Fix hibernation in case interrupts are not re-created (Dexuan Cui)
* remotes/lorenzo/pci/hv:
PCI: hv: Fix hibernation in case interrupts are not re-created
- Fix designware-ep Header Type check (Hou Zhiqiang)
- Use DBI accessors instead of own config accessors (Rob Herring)
- Allow overriding bridge pci_ops (Rob Herring)
- Allow root and child buses to have different pci_ops (Rob Herring)
- Add default dwc pci_ops.map_bus (Rob Herring)
- Use pci_ops for root config space accessors in al, exynos, histb,
keystone, kirin, meson, tegra (Rob Herring)
- Remove dwc own/other config accessor ops (Rob Herring)
- Use generic config accessors in dwc (Rob Herring)
- Also call .add_bus() callback for root bus (Rob Herring)
- Convert keystone .scan_bus() callback to use pci_ops.add_bus (Rob
Herring)
- Convert dwc to use pci_host_probe() (Rob Herring)
- Remove dwc root_bus pointer (Rob Herring)
- Remove storing of PCI resources in dwc-specific structs (Rob Herring)
- Simplify config space handling (Rob Herring)
- Drop keystone duplicated DT num-viewport handling (Rob Herring)
- Check CONFIG_PCI_MSI in dw_pcie_msi_init() instead of duplicating it in
all the drivers (Rob Herring)
- Remove imx6 duplicate PCIE_LINK_WIDTH_SPEED_CONTROL definition (Rob
Herring)
- Add dwc num_lanes for use when it's lacking from DT (Rob Herring)
- Ensure "Fast Link Mode" simulation environment setting is cleared (Rob
Herring)
- Drop meson duplicate number of lanes setup (Rob Herring)
- Drop meson unnecessary RC config space init (Rob Herring)
- Rework meson config and dwc port logic register accesses (Rob Herring)
- Use common PCI register definitions in imx6 and qcom (Rob Herring)
- Search for DesignWare PCIe Capability instead of hard-coding its location
(Rob Herring)
- Use common DesignWare register definitions in tegra (Rob Herring)
- Drop keystone unused DBI2 code (Rob Herring)
- Make dwc ATU accessors private (Rob Herring)
- Centralize link gen setting in dwc (Rob Herring)
- Set PORT_LINK_DLL_LINK_EN in common dwc setup code (Rob Herring)
- Drop intel-gw unnecessary DT 'device_type' checking (Rob Herring)
- Move intel-gw PCI_CAP_ID_EXP discovery to the single place it's used (Rob
Herring)
- Drop intel-gw unused max_width (Rob Herring)
- Move N_FTS (fast training sequence) setup to common dwc setup (Rob
Herring)
- Convert spear13xx, tegra194 to use DBI accessors (Rob Herring)
- Add multiple PFs support for DWC (Xiaowei Bao)
- Add MSI-X doorbell mode for endpoint mode (Xiaowei Bao)
- Update MSI/MSI-X capability management for endpoints (Xiaowei Bao)
- Add layerscape ls1088a and ls2088a compatible strings (Xiaowei Bao)
- Update layerscape MSI/MSI-X management (Xiaowei Bao)
- Use doorbell to support MSI-X on layerscape (Xiaowei Bao)
- Add layerscape endpoint mode support for ls1088a and ls2088a (Xiaowei
Bao)
- Add layerscape ls1088a node to DT (Xiaowei Bao)
- Add Freescale/Layerscape ls1088a to endpoint test (Xiaowei Bao)
- Add endpoint test driver data for Layerscape PCIe controllers (Hou
Zhiqiang)
- Fix 'cast truncates bits from constant value' warning (Gustavo Pimentel)
- Add uniphier iATU register description (Kunihiko Hayashi)
- Add common iATU register support (Kunihiko Hayashi)
- Remove keystone iATU register mapping in favor of generic dwc support
(Kunihiko Hayashi)
- Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)
- Fix MSI page leakage in suspend/resume (Jisheng Zhang)
- Check whether link is up before attempting config access (best-effort fix
even though it's racy) (Hou Zhiqiang)
* remotes/lorenzo/pci/dwc:
PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
PCI: dwc: Fix MSI page leakage in suspend/resume
PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled
PCI: keystone: Remove iATU register mapping
PCI: dwc: Add common iATU register support
dt-bindings: PCI: uniphier-ep: Add iATU register description
dt-bindings: PCI: uniphier: Add iATU register description
PCI: dwc: Fix 'cast truncates bits from constant value'
misc: pci_endpoint_test: Add driver data for Layerscape PCIe controllers
misc: pci_endpoint_test: Add LS1088a in pci_device_id table
PCI: layerscape: Add EP mode support for ls1088a and ls2088a
PCI: layerscape: Modify the MSIX to the doorbell mode
PCI: layerscape: Modify the way of getting capability with different PEX
PCI: layerscape: Fix some format issue of the code
dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a and ls2088a
PCI: designware-ep: Modify MSI and MSIX CAP way of finding
PCI: designware-ep: Move the function of getting MSI capability forward
PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
PCI: designware-ep: Add multiple PFs support for DWC
PCI: dwc: Use DBI accessors
PCI: dwc: Move N_FTS setup to common setup
PCI: dwc/intel-gw: Drop unused max_width
PCI: dwc/intel-gw: Move getting PCI_CAP_ID_EXP offset to intel_pcie_link_setup()
PCI: dwc/intel-gw: Drop unnecessary checking of DT 'device_type' property
PCI: dwc: Set PORT_LINK_DLL_LINK_EN in common setup code
PCI: dwc: Centralize link gen setting
PCI: dwc: Make ATU accessors private
PCI: dwc: Remove read_dbi2 code
PCI: dwc/tegra: Use common Designware port logic register definitions
PCI: dwc: Remove hardcoded PCI_CAP_ID_EXP offset
PCI: dwc/qcom: Use common PCI register definitions
PCI: dwc/imx6: Use common PCI register definitions
PCI: dwc/meson: Rework PCI config and DW port logic register accesses
PCI: dwc/meson: Drop unnecessary RC config space initialization
PCI: dwc/meson: Drop the duplicate number of lanes setup
PCI: dwc: Ensure FAST_LINK_MODE is cleared
PCI: dwc: Add a 'num_lanes' field to struct dw_pcie
PCI: dwc/imx6: Remove duplicate define PCIE_LINK_WIDTH_SPEED_CONTROL
PCI: dwc: Check CONFIG_PCI_MSI inside dw_pcie_msi_init()
PCI: dwc/keystone: Drop duplicated 'num-viewport'
PCI: dwc: Simplify config space handling
PCI: dwc: Remove storing of PCI resources
PCI: dwc: Remove root_bus pointer
PCI: dwc: Convert to use pci_host_probe()
PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus
PCI: Also call .add_bus() callback for root bus
PCI: dwc: Use generic config accessors
PCI: dwc: Remove dwc specific config accessor ops
PCI: dwc: histb: Use pci_ops for root config space accessors
PCI: dwc: exynos: Use pci_ops for root config space accessors
PCI: dwc: kirin: Use pci_ops for root config space accessors
PCI: dwc: meson: Use pci_ops for root config space accessors
PCI: dwc: tegra: Use pci_ops for root config space accessors
PCI: dwc: keystone: Use pci_ops for config space accessors
PCI: dwc: al: Use pci_ops for child config space accessors
PCI: dwc: Add a default pci_ops.map_bus for root port
PCI: dwc: Allow overriding bridge pci_ops
PCI: dwc: Use DBI accessors instead of own config accessors
PCI: Allow root and child buses to have different pci_ops
PCI: designware-ep: Fix the Header Type check
- Make PCIE_BRCMSTB depend on and default to ARCH_BRCMSTB (Jim Quinlan)
- Add DT bindings for 7278, 7216, 7211, and new properties (Jim Quinlan)
- Add bcm7278 register info (Jim Quinlan)
- Add suspend and resume pm_ops (Jim Quinlan)
- Add bcm7278 PERST# support (Jim Quinlan)
- Add control of RESCAL reset (Jim Quinlan)
- Set additional internal memory DMA viewport sizes (Jim Quinlan)
- Accommodate MSI for older chips (Jim Quinlan)
- Set bus max burst size by chip type (Jim Quinlan)
- Add bcm7211, bcm7216, bcm7445, bcm7278 to match list (Jim Quinlan)
* remotes/lorenzo/pci/brcmstb:
PCI: brcmstb: Add bcm7211, bcm7216, bcm7445, bcm7278 to match list
PCI: brcmstb: Set bus max burst size by chip type
PCI: brcmstb: Accommodate MSI for older chips
PCI: brcmstb: Set additional internal memory DMA viewport sizes
PCI: brcmstb: Add control of rescal reset
PCI: brcmstb: Add bcm7278 PERST# support
PCI: brcmstb: Add suspend and resume pm_ops
PCI: brcmstb: Add bcm7278 register info
dt-bindings: PCI: Add bindings for more Brcmstb chips
PCI: brcmstb: PCIE_BRCMSTB depends on ARCH_BRCMSTB
- Remove unnecessary #includes (Gustavo Pimentel)
- Fix intel_mid_pci.c build error when !CONFIG_ACPI (Randy Dunlap)
- Use scnprintf(), not snprintf(), in sysfs "show" functions (Krzysztof
Wilczyński)
- Simplify pci-pf-stub by using module_pci_driver() (Liu Shixin)
- Print IRQ used by Link Bandwidth Notification (Dongdong Liu)
- Update sysfs mmap-related #ifdef comments (Clint Sbisa)
- Simplify pci_dev_reset_slot_function() (Lukas Wunner)
- Use "NULL" instead of "0" to fix sparse warnings (Gustavo Pimentel)
- Simplify bool comparisons (Krzysztof Wilczyński)
- Drop double zeroing for P2PDMA sg_init_table() (Julia Lawall)
* pci/misc:
PCI: v3-semi: Remove unneeded break
PCI/P2PDMA: Drop double zeroing for sg_init_table()
PCI: Simplify bool comparisons
PCI: endpoint: Use "NULL" instead of "0" as a NULL pointer
PCI: Simplify pci_dev_reset_slot_function()
PCI: Update mmap-related #ifdef comments
PCI/LINK: Print IRQ number used by port
PCI/IOV: Simplify pci-pf-stub with module_pci_driver()
PCI: Use scnprintf(), not snprintf(), in sysfs "show" functions
x86/PCI: Fix intel_mid_pci.c build error when ACPI is not enabled
PCI: Remove unnecessary header includes
- Use for_each_child_of_node() and for_each_node_by_name() instead of
open-coding them (Qinglang Miao)
- Reduce pciehp noisiness on hot removal (Lukas Wunner)
- Remove unused assignment in shpchp (Krzysztof Wilczyński)
* pci/hotplug:
PCI: shpchp: Remove unused 'rc' assignment
PCI: pciehp: Reduce noisiness on hot removal
PCI: rpadlpar: Use for_each_child_of_node() and for_each_node_by_name()
- Tone down message about missing optional MCFG (Jeremy Linton)
- Add schedule point in pci_read_config() (Jiang Biao)
- Add Ampere Altra SOC MCFG quirk (Tuan Phan)
- Add Kconfig options for MPS/MRRS strategy (Jim Quinlan)
* pci/enumeration:
PCI: Add Kconfig options for MPS/MRRS strategy
PCI/ACPI: Add Ampere Altra SOC MCFG quirk
PCI: Add schedule point in pci_read_config()
PCI/ACPI: Tone down missing MCFG message
The pci_save_state() call in vmd_suspend() can be performed by
pci_pm_suspend_irq(). This also allows VMD to benefit from the call into
pci_prepare_to_sleep().
The pci_restore_state() call in vmd_resume() was restoring state after
pci_pm_resume()::pci_restore_standard_config() had already restored state.
It's also been suspected that the config state should have been restored
before re-requesting IRQs instead of afterwards.
Remove the pci_save_state()/pci_restore_state() calls in
vmd_suspend()/vmd_resume() to allow proper flow through generic PCI core
Power Management code.
Link: https://lore.kernel.org/r/20200806210017.5654-1-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: You-Sheng Yang <vicamo.yang@canonical.com>
Let's add the status/info page, which is still under construction, however,
already contains valuable documentation/information.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20200617104756.6312-1-david@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Maxim Levitsky