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Add compatible values to Ethernet PHY subnodes representing Micrel
KSZ8081 PHYs on RZ/G1 boards. This allows software to identify the PHY
model at any time, regardless of the state of the PHY reset line.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/ec5c7dadf3c0fe5e47dfbae72fb435047203ad06.1631174218.git.geert+renesas@glider.be
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Add compatible values to Ethernet PHY subnodes representing Micrel
KSZ8041 PHYs on RZ/G1 and R-Car Gen2 boards. This allows software to
identify the PHY model at any time, regardless of the state of the PHY
reset line.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/f9e26625924f90eff34fe6f6f02b15fa272c5d80.1631174218.git.geert+renesas@glider.be
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While networking works fine in RGMII mode when using the Linux generic
PHY driver, it fails when using the Atheros PHY driver.
Fix this by correcting the Ethernet PHY mode to RGMII-RXID, which works
fine with both drivers.
Fixes: a5200e63af57d05e ("arm64: dts: renesas: rzg2: Convert EtherAVB to explicit delay handling")
Reported-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/2a4c15b2df23bb63f15abf9dfb88860477f4f523.1632465965.git.geert+renesas@glider.be
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According to schematics, and confirmed by ID_REV register contents, the
Ethernet controllers on various development board are not SMSC LAN9220,
but different variants:
- KZM-A9-Dual and KZM-A9-GT: LAN9221,
- Bock-W and Marzen: LAN89218AQ.
Update the compatible values accordingly.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/59c142176f795b3541c935df43ab11cecd77cc61.1631173813.git.geert+renesas@glider.be
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Enable ADC driver support for Renesas RZ/G2L based platforms.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210927193551.22422-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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WM8978 audio CODEC is supported on RZ/G2L SMARC EVK.
Enable it on arm64 defconfig as module.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210920093905.10878-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Update MSS node to support MSA based modem boot on SC7280 SoCs.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631886935-14691-11-git-send-email-sibis@codeaurora.org
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This patch adds Q6V5 MSS PAS remoteproc node for SC7280 SoCs.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631886935-14691-10-git-send-email-sibis@codeaurora.org
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Add miscellaneous nodes to boot the modem and support post-mortem debug
on SC7280 SoCs.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631886935-14691-9-git-send-email-sibis@codeaurora.org
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Add, delete and update platform specific reserved memory nodes.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631886935-14691-8-git-send-email-sibis@codeaurora.org
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Add missing reserved regions as described in v1 of SC7280 memory map.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631886935-14691-7-git-send-email-sibis@codeaurora.org
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This device has a physical matrix keyboard, connected to a GPIO
expander, for which there's still no support yet.
Though, some of the keys are connected to the MSM8998 GPIOs and not
as a matrix, so these can be added.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210909123823.368199-4-angelogioacchino.delregno@somainline.org
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This smartphone has a Goodix GT8296 touch IC, reachable at address
0x14 on blsp2 i2c-1.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210909123823.368199-3-angelogioacchino.delregno@somainline.org
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Add configuration for the physical keyboard LEDs, including the
caps lock indicator and keyboard backlight.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210909123823.368199-2-angelogioacchino.delregno@somainline.org
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Add device tree support for the F(x)tec Pro 1 (QX1000) smartphone;
this is a minimal configuration to boot to serial console.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210909123823.368199-1-angelogioacchino.delregno@somainline.org
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At the moment, playing audio on Secondary MI2S will just end up getting
stuck, without actually playing any audio. This happens because the wrong
bit clock is configured when playing audio on Secondary MI2S.
The PRI_I2S_CLK (better name: SPKR_I2S_CLK) is used by the SPKR audio mux
block that provides both Primary and Secondary MI2S.
The SEC_I2S_CLK (better name: MIC_I2S_CLK) is used by the MIC audio mux
block that provides Tertiary MI2S. Quaternary MI2S is also part of the
MIC audio mux but has its own clock (AUX_I2S_CLK).
This means that (quite confusingly) the SEC_I2S_CLK is not actually
used for Secondary MI2S as the name would suggest. Secondary MI2S
needs to have the same clock as Primary MI2S configured.
Fix the clock list for the lpass node in the device tree and add
a comment to clarify this confusing naming. With these changes,
audio can be played correctly on Secondary MI2S.
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Fixes: 3761a3618f55 ("arm64: dts: qcom: add lpass node")
Tested-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210816181810.2242-1-stephan@gerhold.net
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So far there were no interrupts set up for the BMC150 accelerometer
+ magnetometer combo because they were broken for some reason.
It turns out Longcheer L8150 actually has a BMC156 which is very similar
to BMC150, but only has an INT2 pin for the accelerometer part.
This requires some minor changes in the bmc150-accel driver which is now
supported by using the more correct bosch,bmc156_accel compatible.
Unfortunately it looks like even INT2 is not functional on most boards
because the interrupt line is not actually connected to the BMC156.
However, there are two pads next to the chip that can be shorted
to make it work if needed.
While at it, add the missing interrupts for the magnetometer part
and extra BMG160 gyroscope, those seem to work without any problems.
Also correct the magnetometer compatible to bosch,bmc156_magn for clarity
(no functional difference for the magnetometer part).
Tested-by: Nikita Travkin <nikita@trvn.ru>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210816123544.14027-1-stephan@gerhold.net
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Add IMEM and pil info DT nodes for SC7180 SoC which will help in the
post-mortem debug.
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
[bjorn: Dropped dload-mode subnode, as no agreement was reached on this binding]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/39064a2db95ccc2cb5eef003569bef2de651c8ed.1628757036.git.saiprakash.ranjan@codeaurora.org
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Add missing include to make it compile.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-17-konrad.dybcio@somainline.org
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Add initial SM6350 SoC and Sony Xperia 10 III (PDX213, Lena platform) device
trees. There is no sign of another Lena devices on the horizon, so a common
DTSI is not created for now. 10 III features a Full HD OLED display and 5G
support, among other nice things like USB3.
The bootloader is VERY unpleasant, to get a bootable setup you have to run:
mkbootimg --kernel arch/arm64/boot/Image.gz --ramdisk [some initrd] \
--dtb arch/arm64/boot/dts/qcom/sm6350-sony-xperia-lena-pdx213.dtb \
--cmdline "[some cmdline]" --base 0 --kernel_offset 0x8000 \
--ramdisk_offset 0x1000000 --dtb_offset 0x1f00000 --os_version 11 \
--os_patch_level "2021-08" --tags_offset 0x100 --pagesize 4096 \
--header_version 2 -o mainline.img
adb reboot bootloader
// You have to either pull vbmeta{"","_system"} from
// /dev/block/bootdevice/by-name/ or build one as a part of AOSP build process
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot --disable-verity --disable-verification flash vbmeta_system \
vbmeta_system.img
fastboot flash boot mainline.img
fastboot erase dtbo // This will take approx 70s...
fastboot reboot
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-16-konrad.dybcio@somainline.org
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Add a node for the APPS SMMU to allow for managing memory access to peripherals
such as the USB controller.
While at it, add iommus property to the USB1 node to make sure its registers can
be accessed, as they seem to be gated by default.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-15-konrad.dybcio@somainline.org
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Add SDHCI1/2 nodes for eMMC and uSD card respectively.
Do note that most SM6350 devices seem to come with UFS.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
[bjorn: Replaced SM6350_CX with its constant value]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-14-konrad.dybcio@somainline.org
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Add RPMHPD node, its OPP table and BCM voter to prepare for performance level
voting.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-13-konrad.dybcio@somainline.org
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Add a node for the PRNG to enable hw-accelerated pseudo-random number
generation.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-12-konrad.dybcio@somainline.org
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Add a node for SPMI to allow for communication with on-board PMICs.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-11-konrad.dybcio@somainline.org
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Add a node for AOSS_QMP in preparation for remote processor enablement.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-10-konrad.dybcio@somainline.org
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Add nodes required for TSENS block using the common qcom,tsens-v2 binding.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-9-konrad.dybcio@somainline.org
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Add cpufreq-hw node and assign qcom,freq-domain properties to CPUs to enable
CPU clock scaling.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-8-konrad.dybcio@somainline.org
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Add nodes required for USB1 to function. SM6350 (thankfully) resuses SDM845 and
SC7180 IP, so no additional code porting is required.
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
[bjorn: Renamed dwc3 node "usb"]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-7-konrad.dybcio@somainline.org
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Add TLMM pinctrl node to enable referencing the SoC pins in other nodes.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-6-konrad.dybcio@somainline.org
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Add and configure GCC node to allow for referencing GCC-controlled clocks
in other nodes.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-5-konrad.dybcio@somainline.org
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Add RPMHCC node to allow for referencing RPMH-controlled clocks in other
nodes.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-4-konrad.dybcio@somainline.org
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Add a node for LLCC with SM6350-specific compatible.
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-3-konrad.dybcio@somainline.org
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Add a base DT for SM6350 SoC
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210923162204.21752-2-konrad.dybcio@somainline.org
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Add the pwm controller nodes to the core rk3568 dtsi.
Signed-off-by: Liang Chen <cl@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20210726090355.1548483-2-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Pull kvm fixes from Paolo Bonzini:
"A bit late... I got sidetracked by back-from-vacation routines and
conferences. But most of these patches are already a few weeks old and
things look more calm on the mailing list than what this pull request
would suggest.
x86:
- missing TLB flush
- nested virtualization fixes for SMM (secure boot on nested
hypervisor) and other nested SVM fixes
- syscall fuzzing fixes
- live migration fix for AMD SEV
- mirror VMs now work for SEV-ES too
- fixes for reset
- possible out-of-bounds access in IOAPIC emulation
- fix enlightened VMCS on Windows 2022
ARM:
- Add missing FORCE target when building the EL2 object
- Fix a PMU probe regression on some platforms
Generic:
- KCSAN fixes
selftests:
- random fixes, mostly for clang compilation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
selftests: KVM: Explicitly use movq to read xmm registers
selftests: KVM: Call ucall_init when setting up in rseq_test
KVM: Remove tlbs_dirty
KVM: X86: Synchronize the shadow pagetable before link it
KVM: X86: Fix missed remote tlb flush in rmap_write_protect()
KVM: x86: nSVM: don't copy virt_ext from vmcb12
KVM: x86: nSVM: test eax for 4K alignment for GP errata workaround
KVM: x86: selftests: test simultaneous uses of V_IRQ from L1 and L0
KVM: x86: nSVM: restore int_vector in svm_clear_vintr
kvm: x86: Add AMD PMU MSRs to msrs_to_save_all[]
KVM: x86: nVMX: re-evaluate emulation_required on nested VM exit
KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry
KVM: x86: VMX: synthesize invalid VM exit when emulating invalid guest state
KVM: x86: nSVM: refactor svm_leave_smm and smm_enter_smm
KVM: x86: SVM: call KVM_REQ_GET_NESTED_STATE_PAGES on exit from SMM mode
KVM: x86: reset pdptrs_from_userspace when exiting smm
KVM: x86: nSVM: restore the L1 host state prior to resuming nested guest on SMM exit
KVM: nVMX: Filter out all unsupported controls when eVMCS was activated
KVM: KVM: Use cpumask_available() to check for NULL cpumask when kicking vCPUs
KVM: Clean up benign vcpu->cpu data races when kicking vCPUs
...
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SM8350 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-11-git-send-email-sibis@codeaurora.org
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SM8250 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-10-git-send-email-sibis@codeaurora.org
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SM8150 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-9-git-send-email-sibis@codeaurora.org
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SDM845 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-8-git-send-email-sibis@codeaurora.org
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SC7280 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-7-git-send-email-sibis@codeaurora.org
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Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SC7180 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-6-git-send-email-sibis@codeaurora.org
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During boot time kernel configured with OF=y but USE_OF=n displays the
following warnings and hangs shortly after starting userspace:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/irq/irqdomain.c:695 irq_create_mapping_affinity+0x29/0xc0
irq_create_mapping_affinity(, 6) called with NULL domain
CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.0-rc3-00001-gd67ed2510d28 #30
Call Trace:
__warn+0x69/0xc4
warn_slowpath_fmt+0x6c/0x94
irq_create_mapping_affinity+0x29/0xc0
local_timer_setup+0x40/0x88
time_init+0xb1/0xe8
start_kernel+0x31d/0x3f4
_startup+0x13b/0x13b
---[ end trace 1e6630e1c5eda35b ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at arch/xtensa/kernel/time.c:141 local_timer_setup+0x58/0x88
error: can't map timer irq
CPU: 0 PID: 0 Comm: swapper Tainted: G W 5.15.0-rc3-00001-gd67ed2510d28 #30
Call Trace:
__warn+0x69/0xc4
warn_slowpath_fmt+0x6c/0x94
local_timer_setup+0x58/0x88
time_init+0xb1/0xe8
start_kernel+0x31d/0x3f4
_startup+0x13b/0x13b
---[ end trace 1e6630e1c5eda35c ]---
Failed to request irq 0 (timer)
Fix that by calling irqchip_init only when CONFIG_USE_OF is selected and
calling legacy interrupt controller init otherwise.
Fixes: da844a81779e ("xtensa: add device trees support")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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When updating the host's mask for its MSR_IA32_TSX_CTRL user return entry,
clear the mask in the found uret MSR instead of vmx->guest_uret_msrs[i].
Modifying guest_uret_msrs directly is completely broken as 'i' does not
point at the MSR_IA32_TSX_CTRL entry. In fact, it's guaranteed to be an
out-of-bounds accesses as is always set to kvm_nr_uret_msrs in a prior
loop. By sheer dumb luck, the fallout is limited to "only" failing to
preserve the host's TSX_CTRL_CPUID_CLEAR. The out-of-bounds access is
benign as it's guaranteed to clear a bit in a guest MSR value, which are
always zero at vCPU creation on both x86-64 and i386.
Cc: stable@vger.kernel.org
Fixes: 8ea8b8d6f869 ("KVM: VMX: Use common x86's uret MSR list as the one true list")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210926015545.281083-1-zhenzhong.duan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Now that we no longer rely on thread_info living at the base of the task
stack to be able to access the 'current' pointer, we can wire up the
generic support for moving thread_info into the task struct itself.
Note that this requires us to update the cpu field in thread_info
explicitly, now that the core code no longer does so. Ideally, we would
switch the percpu code to access the cpu field in task_struct instead,
but this unleashes #include circular dependency hell.
Co-developed-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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Now that the user space TLS register is assigned on every return to user
space, we can use it to keep the 'current' pointer while running in the
kernel. This removes the need to access it via thread_info, which is
located at the base of the stack, but will be moved out of there in a
subsequent patch.
Use the __builtin_thread_pointer() helper when available - this will
help GCC understand that reloading the value within the same function is
not necessary, even when using the per-task stack protector (which also
generates accesses via the TLS register). For example, the generated
code below loads TPIDRURO only once, and uses it to access both the
stack canary and the preempt_count fields.
<do_one_initcall>:
e92d 41f0 stmdb sp!, {r4, r5, r6, r7, r8, lr}
ee1d 4f70 mrc 15, 0, r4, cr13, cr0, {3}
4606 mov r6, r0
b094 sub sp, #80 ; 0x50
f8d4 34e8 ldr.w r3, [r4, #1256] ; 0x4e8 <- stack canary
9313 str r3, [sp, #76] ; 0x4c
f8d4 8004 ldr.w r8, [r4, #4] <- preempt count
Co-developed-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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To prepare for a subsequent patch that stores the current task pointer
in the user space TLS register while running in the kernel, modify the
set_tls and switch_tls routines not to touch the register directly, and
update the return to user space code to load the correct value.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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This avoids needing to compute the task pointer in this function, which
will no longer be possible once we move thread_info off the stack.
Signed-off-by: Keith Packard <keithpac@amazon.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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We will be enabling THREAD_INFO_IN_TASK support for ARM, which means
that we can no longer load the stack canary value by masking the stack
pointer and taking the copy that lives in thread_info. Instead, we will
be able to load it from the task_struct directly, by using the TPIDRURO
register which will hold the current task pointer when
THREAD_INFO_IN_TASK is in effect. This is much more straight-forward,
and allows us to declutter this code a bit while at it.
Note that this means that ARMv6 (non-v6K) SMP systems can no longer use
this feature, but those are quite rare to begin with, so this is a
reasonable trade off.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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We need the fixes in here, and it resolves a merge issue with
drivers/staging/r8188eu/os_dep/ioctl_linux.c
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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