Intercept reads to invalid (non-existent) and write-only x2APIC registers
when configuring VMX's MSR bitmaps for x2APIC+APICv. When APICv is fully
enabled, Intel hardware doesn't validate the registers on RDMSR and
instead blindly retrieves data from the vAPIC page, i.e. it's software's
responsibility to intercept reads to non-existent and write-only MSRs.
Fixes: 8d14695f95 ("x86, apicv: add virtual x2apic support")
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20230107011025.565472-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Don't clear the "read" bits for x2APIC registers above SELF_IPI (APIC regs
0x400 - 0xff0, MSRs 0x840 - 0x8ff). KVM doesn't emulate registers in that
space (there are a smattering of AMD-only extensions) and so should
intercept reads in order to inject #GP. When APICv is fully enabled,
Intel hardware doesn't validate the registers on RDMSR and instead blindly
retrieves data from the vAPIC page, i.e. it's software's responsibility to
intercept reads to non-existent MSRs.
Fixes: 8d14695f95 ("x86, apicv: add virtual x2apic support")
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Link: https://lore.kernel.org/r/20230107011025.565472-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move the generation of the readable APIC regs bitmask to a standalone
helper so that VMX can use the mask for its MSR interception bitmaps.
No functional change intended.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20230107011025.565472-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Mark APIC_DFR as being invalid/non-existent in x2APIC mode instead of
handling it as a one-off check in kvm_x2apic_msr_read(). This will allow
reusing "valid_reg_mask" to generate VMX's interception bitmaps for
x2APIC. Handling DFR in the common read path may also fix the Hyper-V
PV MSR interface, if that can coexist with x2APIC.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20230107011025.565472-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reject attempts to set bits 63:32 for 32-bit x2APIC registers, i.e. all
x2APIC registers except ICR. Per Intel's SDM:
Non-zero writes (by WRMSR instruction) to reserved bits to these
registers will raise a general protection fault exception
Opportunistically fix a typo in a nearby comment.
Reported-by: Marc Orr <marcorr@google.com>
Cc: stable@vger.kernel.org
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20230107011025.565472-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Inject a #GP if the guest attempts to set reserved bits in the x2APIC-only
Self-IPI register. Bits 7:0 hold the vector, all other bits are reserved.
Reported-by: Marc Orr <marcorr@google.com>
Cc: Ben Gardon <bgardon@google.com>
Cc: Venkatesh Srinivas <venkateshs@chromium.org>
Cc: stable@vger.kernel.org
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20230107011025.565472-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Return value from apic_get_tmcct() directly instead of taking
this in another redundant variable.
Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn>
Link: https://lore.kernel.org/r/202211231704457807160@zte.com.cn
Signed-off-by: Sean Christopherson <seanjc@google.com>
Fix a build error due to a mixup during a recent refactoring. The error
was reported during code review, but the fixed up patch didn't make it
into the final commit.
Fixes: 474856bad921 ("KVM: PPC: Move processor compatibility check to module init")
Link: https://lore.kernel.org/all/87cz93snqc.fsf@mpe.ellerman.id.au
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20230119182158.4026656-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The psp suspend & resume should be skipped to avoid destroy
the TMR and reload FWs again for IMU enabled APU ASICs.
Signed-off-by: Tim Huang <tim.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why&how]
There are cases where VRR is possible but not enabled. If allow_freesync
parameter is not set, SubVP logic defaults to checking only the ignore MSA
parameter that is always set if display is DRR capable, which breaks the system
while trying to enable SubVP on multi monitor configs where freesync
does not work due to Xorg limitation.
SubVP uses allow_freesync parameter to check if SubVP + DRR case can be executed.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This reverts commit 6ffa679916.
This commit introduced a regression in Unigine Heaven benchmark where
the display would turn off due to incorrect handling of the parameter to
ignore MSA packets.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
In certain D3 cases (BOCO / BOMACO) the hardware is reset but
software state still has idle_optimizations = true. This prevents
us from entering idle optimizations again if no display is connected.
[How]
In hw init, reset the idle optimization state, and allow idle
optimizations after all pipes have been turned off.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
All calls into DC must be guarded by dc_lock because DC code
is not safe against multi-thread or re-entry.
[How]
Hold dc_lock when calling DC interfaces to parse Freesync HDMI.
Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Iterating over every voltage state when we need to validate thousands of
configurations all at once (i.e. display hotplug) can take a significant
amount of time.
[How]
Check just the highest voltage state when fast_validate is true to
verify whether the configuration can work at all, then do a proper
validation including all voltage states later when fast_validate is false.
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Description]
The two features are not supported at the same time in driver at this time,
so disable it.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
During DP DSC compliance tests, bpc requested would
change between sub-tests, which requires stream
to be recommited.
[How]
Force connector to disconnect and reconnect whenever
there is a bpc change in automated test.
Reviewed-by: Jerry Zuo <Jerry.Zuo@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Not all ASICs support LTTPR, however if they don't it doesn't mean that
we have encountered unexpected behaviour. So, use DC_NOT_SUPPORTED
instead of DC_ERROR_UNEXPECTED.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
To support new mes ip block
Signed-off-by: Li Ma <li.ma@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The GC 11.0.4 needs load IMU to power up GFX before loads GFX firmware.
Signed-off-by: Li Ma <li.ma@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rebase of driver has incorrect unconditional trap enablement
for GFX11 when adding mes queues.
Reported-by: Graham Sider <graham.sider@amd.com>
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Graham Sider <graham.sider@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
__ffs_ep0_queue_wait executes holding the spinlock of &ffs->ev.waitq.lock
and unlocks it after the assignments to usb_request are done.
However in the code if the request is already NULL we bail out returning
-EINVAL but never unlocked the spinlock.
Fix this by adding spin_unlock_irq &ffs->ev.waitq.lock before returning.
Fixes: 6a19da1110 ("usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait")
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Udipto Goswami <quic_ugoswami@quicinc.com>
Link: https://lore.kernel.org/r/20230124091149.18647-1-quic_ugoswami@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With vbus override enabled when in OTG dr_mode, Host<->Peripheral
switch now works on SM8550, otherwise the DWC3 seems to be stuck
in Host mode only.
Fixes: a4333c3a6b ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230123-topic-sm8550-upstream-dwc3-qcom-otg-v2-1-2d400e598463@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add myself as a second maintainer for the UVC Gadget.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230124153909.867202-1-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since the "active" state for partner altmodes is now being taken care of
by the altmode driver itself (specifically, DisplayPort altmode), we
no longer need to do so from the port driver. So remove the calls to
typec_altmode_update_active() from TCPM.
Suggested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20230120205827.740900-2-pmalani@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the altmode "active" state when we receive Acks for Enter and
Exit Mode commands. Having the right state is necessary to change Pin
Assignments using the 'pin_assignment" sysfs file.
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
Link: https://lore.kernel.org/r/20230120205827.740900-1-pmalani@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kstrtox() calls operate on local (to the function) variables and do
not need to be serialized. We may call them out of the lock.
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120182434.24245-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A design found in various Qualcomm-based boards is to use a USB switch,
controlled through a pair of GPIO lines to connect, disconnect and
switch the orientation of the SBU lines in USB Type-C applications.
This introduces a generic driver, which implements the typec_switch and
typec_mux interfaces to perform these operations.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20230113041115.4189210-2-quic_bjorande@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce a binding for GPIO-based mux hardware used for connecting,
disconnecting and switching orientation of the SBU lines in USB Type-C
applications.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20230113041115.4189210-1-quic_bjorande@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120154437.22025-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A call to platform_get_irq() already prints an error on failure within
its own implementation. So printing another error based on its return
value in the caller is redundant and should be removed. The clean up
also makes if condition block braces unnecessary. Remove that as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120154437.22025-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kstrtox() along with regmap API can return different error codes based on
circumstances.
Don't shadow them when returning to the caller.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120154437.22025-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230120154437.22025-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reset the device explicitly to get into a known state and also set the chip
enable bit. Additionally, mask interrupts which aren't handled.
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230123073508.2350402-4-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is in preparation of support for devices where interrupts are acked
differently.
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230123073508.2350402-3-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is used when responding to GET_STATUS requests. Without this, it
crashes on completion.
Fixes: b84a8dee23 ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230123073508.2350402-2-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
"fsl-ehci" is used for both MODULE_ALIAS and driver name. As they have to
match use DRV_NAME in both locations.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20230123100007.1479090-1-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1. Drop 0x from unit address (microchip).
2. Align HDMI CEC and LED nodes with bindings (hisilicon).
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Merge tag 'dt64-cleanup-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-dt into arm/dt
Minor improvements in ARM64 DTS for v6.3
1. Drop 0x from unit address (microchip).
2. Align HDMI CEC and LED nodes with bindings (hisilicon).
* tag 'dt64-cleanup-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-dt:
arm64: dts: hisilicon: align LED node names with dtschema
arm64: dts: microchip: drop 0x from unit address
Link: https://lore.kernel.org/r/20230122121541.29312-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
It contains:
- the addition of XISC (eXtended Image Sensor Controller) and CSI2DC (csi2
demux controller) available in SAMA7G5
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Merge tag 'at91-dt-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/dt
AT91 device tree updates for 6.3:
It contains:
- the addition of XISC (eXtended Image Sensor Controller) and CSI2DC (csi2
demux controller) available in SAMA7G5
* tag 'at91-dt-6.3' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: dts: at91: sama7g5: add nodes for video capture
Link: https://lore.kernel.org/r/20230119112903.43257-1-claudiu.beznea@microchip.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Enable watchdog and timer (OSTM) support for the RZ/Five SMARC EVK
development board,
- Add operating points for the Cortex-A55 CPU cores on the R-Car S4-8
SoC,
- Add display support for the R-Car V4H SoC and the White-Hawk
development board,
- Add eMMC and SDHI support for the RZ/V2M SoC,
- Miscellaneous fixes and improvements.
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Merge tag 'renesas-dts-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/dt
Renesas DT updates for v6.3
- Enable watchdog and timer (OSTM) support for the RZ/Five SMARC EVK
development board,
- Add operating points for the Cortex-A55 CPU cores on the R-Car S4-8
SoC,
- Add display support for the R-Car V4H SoC and the White-Hawk
development board,
- Add eMMC and SDHI support for the RZ/V2M SoC,
- Miscellaneous fixes and improvements.
* tag 'renesas-dts-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
arm64: dts: renesas: condor-i: add HS400 support for eMMC
arm64: boot: dts: r8a774[a/b/e]1-beacon: Consolidate sound clocks
riscv: dts: renesas: rzfive-smarc-som: Enable OSTM nodes
arm64: dts: renesas: ulcb-kf: Fix pca9548 i2c-mux node names
arm64: dts: renesas: r9a09g011: Add eMMC and SDHI support
arm64: dts: renesas: white-hawk-cpu: Add DP output support
arm64: dts: renesas: r8a779g0: Add display related nodes
arm64: dts: renesas: r8a779f0: Add CA55 operating points
riscv: dts: renesas: rzfive-smarc-som: Enable WDT
Link: https://lore.kernel.org/r/cover.1673702293.git.geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Enable support for the Renesas RZ/G2L MIPI DSI, CSI-2, and Camera
Receiving Unit drivers in the arm64 defconfig,
- Refresh shmobile_defconfig for v6.1-rc5.
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Merge tag 'renesas-arm-defconfig-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into soc/defconfig
Renesas ARM defconfig updates for v6.3
- Enable support for the Renesas RZ/G2L MIPI DSI, CSI-2, and Camera
Receiving Unit drivers in the arm64 defconfig,
- Refresh shmobile_defconfig for v6.1-rc5.
* tag 'renesas-arm-defconfig-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
arm64: defconfig: Enable RZ/G2L MIPI CSI-2 and CRU support
ARM: shmobile: defconfig: Refresh for v6.1-rc5
arm64: defconfig: Enable Renesas RZ/G2L MIPI DSI driver
Link: https://lore.kernel.org/r/cover.1673702289.git.geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A GPIO based I2C bus is used by at least some Atmel reference boards,
including the AT91SAM9G20-EK which is in CI, enable the driver as a
module to improve test coverage and help users of systems that happen to
use it.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230109-arm-multi-v5-i2c-gpio-v1-1-78e191358548@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The wm896x series of audio CODECs is used on a number of Freescale
reference designs, enable the drivers in multi_v7_defconfig to improve
testing coverage of those systems and their derivatives.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20230106-arm-wm896x-v1-1-441c564a9cd1@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Currently trace_printk() can be used as soon as early_trace_init() is
called from start_kernel(). But if a crash happens, and
"ftrace_dump_on_oops" is set on the kernel command line, all you get will
be:
[ 0.456075] <idle>-0 0dN.2. 347519us : Unknown type 6
[ 0.456075] <idle>-0 0dN.2. 353141us : Unknown type 6
[ 0.456075] <idle>-0 0dN.2. 358684us : Unknown type 6
This is because the trace_printk() event (type 6) hasn't been registered
yet. That gets done via an early_initcall(), which may be early, but not
early enough.
Instead of registering the trace_printk() event (and other ftrace events,
which are not trace events) via an early_initcall(), have them registered at
the same time that trace_printk() can be used. This way, if there is a
crash before early_initcall(), then the trace_printk()s will actually be
useful.
Link: https://lkml.kernel.org/r/20230104161412.019f6c55@gandalf.local.home
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: e725c731e3 ("tracing: Split tracing initialization into two for early initialization")
Reported-by: "Joel Fernandes (Google)" <joel@joelfernandes.org>
Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Lets eradicate a silent conflict between drm-intel-next and
drm-intel-gt-next which added a duplicate function (try_firmware_load).
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
