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2023-07-15interconnect: qcom: msm8916: Hook up RPM bus clk definitionsKonrad Dybcio
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-15-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: msm8939: Hook up RPM bus clk definitionsKonrad Dybcio
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-14-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: qcs404: Hook up RPM bus clk definitionsKonrad Dybcio
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-13-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: msm8996: Hook up RPM bus clk definitionsKonrad Dybcio
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-12-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: sdm660: Hook up RPM bus clk definitionsKonrad Dybcio
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-11-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: Define RPM bus clocksKonrad Dybcio
Add the definitions for RPM bus clocks that will be used by many different platforms. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-10-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: smd-rpm: Add rpmcc handling skeleton codeKonrad Dybcio
Introduce qcom_icc_rpm_set_bus_rate() in preparation for handling RPM clock resources within the interconnect framework. This lets us greatly simplify all of the code handling, as setting the rate comes down to: u32 rate_khz = max(clk.sleep_rate, clk.active_rate, clk_a.active_rate) write_to_rpm(clock.description, rate_khz); Reviewed-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-9-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: Fold smd-rpm.h into icc-rpm.hKonrad Dybcio
smd-rpm.h is not very useful as-is and both files are always included anyway.. Combine them. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-8-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: Add missing headers in icc-rpm.hKonrad Dybcio
Currently the header does not provide all the required dependencies. Fix it. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-7-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: icc-rpm: Introduce keep_aliveKonrad Dybcio
The downstream kernel employs the concept of "keeping the bus alive" by voting for the minimum (XO/19.2MHz) rate at all times on certain (well, most) buses. This is a very important thing to have, as if we either have a lackluster/wrong DT that doesn't specify a (high enough) vote on a certain bus, we may lose access to the entire bus altogether. This is very apparent when we only start introducing interconnect support on a given platform and haven't yet introduced voting on all peripherals. The same can happen if we only have a single driver casting a vote on a certain bus and that driver exits/crashes/suspends. The keepalive vote is limited to the ACTIVE bucket, as keeping a permanent vote on the SLEEP one could prevent the platform from properly entering low power mode states. Introduce the very same concept, with a slight twist: the vendor kernel checks whether the rate is zero before setting the minimum vote, but that's rather silly, as in doing so we're at the mercy of CCF. Instead, explicitly clamp the rates to always be >= 19.2 MHz for providers with keep_alive=true. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-6-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15soc: qcom: smd-rpm: Move icc_smd_rpm registration to clk-smd-rpmStephan Gerhold
icc_smd_rpm will do bus clock votes itself rather than taking the unnecessary detour through the clock subsystem. However, it can only do that after the clocks have been handed off and scaling has been enabled in the RPM in clk-smd-rpm. Move the icc_smd_rpm registration from smd-rpm.c to clk-smd-rpm.c to avoid any possible races. icc_smd_rpm gets the driver data from the smd-rpm device, so still register the platform device on the smd-rpm parent device. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> [Konrad: remove unrelated cleanups] Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-5-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15clk: qcom: smd-rpm: Move some RPM resources to the common headerKonrad Dybcio
In preparation for handling the bus clocks in the icc driver, carve out some defines and a struct definition to the common rpm header. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-4-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15soc: qcom: smd-rpm: Use tabs for definesKonrad Dybcio
Use tabs for defines to make things spaced consistently. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-3-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15soc: qcom: smd-rpm: Add QCOM_SMD_RPM_STATE_NUMKonrad Dybcio
Add a preprocessor define to indicate the number of RPM contexts/states. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-2-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15dt-bindings: interconnect: Add Qcom RPM ICC bindingsKonrad Dybcio
The SMD RPM interconnect driver requires different icc tags to the RPMh driver. Add bindings to reflect that. Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-1-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-11clk: renesas: rzg2l: Simplify .determine_rate()Christophe JAILLET
rzg2l_cpg_sd_clk_mux_determine_rate() is the same as __clk_mux_determine_rate_closest(), so use the latter to save some LoC. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/fed02e0325275df84e2d76f8c481e40e7023cbd9.1688760372.git.christophe.jaillet@wanadoo.fr Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-10clk: rockchip: rk3568: Fix PLL rate setting for 78.75MHzAlibek Omarov
PLL rate on RK356x is calculated through the simple formula: ((24000000 / _refdiv) * _fbdiv) / (_postdiv1 * _postdiv2) The PLL rate setting for 78.75MHz seems to be copied from 96MHz so this patch fixes it and configures it properly. Signed-off-by: Alibek Omarov <a1ba.omarov@gmail.com> Fixes: 842f4cb72639 ("clk: rockchip: Add more PLL rates for rk3568") Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.kernel.org/r/20230614134750.1056293-1-a1ba.omarov@gmail.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2023-07-10clk: rockchip: rk3568: Add PLL rate for 101MHzAlibek Omarov
This patch adds PLL setting for not so common resolution as 1920x720-50.00, which can be set using 2500 horizontal signals and 808 vertical. Signed-off-by: Alibek Omarov <a1ba.omarov@gmail.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.kernel.org/r/20230614134716.1055862-1-a1ba.omarov@gmail.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2023-07-10clk: renesas: r9a09g011: Add CSI related clocksFabrizio Castro
The Renesas RZ/V2M SoC comes with 6 CSI IPs (CSI0, CSI1, CSI2 CSI3, CSI4, and CSI5), however Linux is only allowed control of CSI0 and CSI4. CSI0 shares its reset and PCLK lines with CSI1, CSI2, and CSI3. CSI4 shares its reset and PCLK lines with CSI5. This commit adds support for the relevant clocks. Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230622113341.657842-3-fabrizio.castro.jz@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-10clk: renesas: r8a774b1: Add 3DGE and ZG supportAdam Ford
The 3DGE and ZG clocks are necessary to support the 3D graphics. Signed-off-by: Adam Ford <aford173@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230617150302.38477-4-aford173@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-10clk: renesas: r8a774e1: Add 3DGE and ZG supportAdam Ford
The 3DGE and ZG clocks are necessary to support the 3D graphics. Signed-off-by: Adam Ford <aford173@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230617150302.38477-3-aford173@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-10clk: renesas: r8a774a1: Add 3DGE and ZG supportAdam Ford
The 3DGE and ZG clocks are necessary to support the 3D graphics. Signed-off-by: Adam Ford <aford173@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230617150302.38477-2-aford173@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-10clk: renesas: rcar-gen3: Add support for ZG clockAdam Ford
A clock used for the 3D graphics appears to be common among multiple SoC's, so add a generic gen3 clock for clocking the graphics. This is similar to the cpg_z_clk, with a different frequency control register and different flags. Instead of duplicating the code, make cpg_z_clk_register into a helper function and call the help function with the FCR and flags as a parameter. Signed-off-by: Adam Ford <aford173@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230617150302.38477-1-aford173@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-07-09clk: qcom: gcc-sc8280xp: Allow PCIe GDSCs to enter retention stateManivannan Sadhasivam
With the minimal system suspend support in place for the PCIe driver that keeps the interconnect path voted, the ALWAYS_ON flag can now be dropped. Also, the pwrsts PWRSTS_RET_ON flag should be used to allow the GDSCs to enter the retention state when the parent domain get's turned off during system suspend. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20230707075926.11726-1-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gcc-sm7150: Add CLK_OPS_PARENT_ENABLE to sdcc2 rcgDanila Tikhonov
Set .flags = CLK_OPS_PARENT_ENABLE to fix "gcc_sdcc2_apps_clk_src: rcg didn't update its configuration" error. Fixes: a808d58ddf29 ("clk: qcom: Add Global Clock Controller (GCC) driver for SM7150") Signed-off-by: Danila Tikhonov <danila@jiaxyga.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230630191944.20282-1-danila@jiaxyga.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09dt-bindings: clock: qcom: Update my email addressTaniya Das
Update my email address from the defunct codeaurora.org domain to the current quicinc.com domain. Signed-off-by: Taniya Das <quic_tdas@quicinc.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://lore.kernel.org/r/20230627173123.9221-1-quic_tdas@quicinc.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gcc-sc8280xp: Add missing GDSCsKonrad Dybcio
There are 10 more GDSCs that we've not been caring about, and by extension (and perhaps even more importantly), not putting to sleep. Add them. Fixes: d65d005f9a6c ("clk: qcom: add sc8280xp GCC driver") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20230620-topic-sc8280_gccgdsc-v2-3-562c1428c10d@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gcc-sc8280xp: Add missing GDSC flagsKonrad Dybcio
All of the 8280's GCC GDSCs can and should use the retain registers so as not to lose their state when entering lower power modes. Fixes: d65d005f9a6c ("clk: qcom: add sc8280xp GCC driver") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20230620-topic-sc8280_gccgdsc-v2-1-562c1428c10d@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09Merge branch '20230620-topic-sc8280_gccgdsc-v2-2-562c1428c10d@linaro.org' ↵Bjorn Andersson
into clk-for-6.6 Merge a set of new SC8280XP GCC GDSC constants through a topic branch, to allow them being introduce into the DeviceTree source as well.
2023-07-09dt-bindings: clock: qcom,gcc-sc8280xp: Add missing GDSCsKonrad Dybcio
There are 10 more GDSCs that we've not been caring about, and by extension (and perhaps even more importantly), not putting to sleep. Add them. Fixes: a66a82f2a55e ("dt-bindings: clock: Add Qualcomm SC8280XP GCC bindings") Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20230620-topic-sc8280_gccgdsc-v2-2-562c1428c10d@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gpucc-sm6350: Fix clock source namesKonrad Dybcio
fw_name for GCC inputs didn't match the bindings. Fix it. Fixes: 013804a727a0 ("clk: qcom: Add GPU clock controller driver for SM6350") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230315-topic-lagoon_gpu-v2-2-afcdfb18bb13@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gpucc-sm6350: Introduce index-based clk lookupKonrad Dybcio
Add the nowadays-prefered and marginally faster way of looking up parent clocks in the device tree. It also allows for clock-names-independent operation, so long as the order (which is enforced by schema) is kept. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230315-topic-lagoon_gpu-v2-1-afcdfb18bb13@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: gcc-ipq9574: Add USB related clocksVaradarajan Narayanan
Add the clocks needed for enabling USB in IPQ9574 Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com> Link: https://lore.kernel.org/r/d1c5aa4a8535c645fdb06df62a562918516ba0c6.1686289721.git.quic_varada@quicinc.com [bjorn: Clock defines split out to separate commit] Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09Merge branch ↵Bjorn Andersson
'd1c5aa4a8535c645fdb06df62a562918516ba0c6.1686289721.git.quic_varada@quicinc.com' into clk-for-6.6 Merge the USB clock constants from a topic branch, to allow them to be used in DeviceTree source as well.
2023-07-09dt-bindings: clock: Add USB related clocks for IPQ9574Varadarajan Narayanan
Add the clocks needed for enabling USB in IPQ9574 Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com> Link: https://lore.kernel.org/r/d1c5aa4a8535c645fdb06df62a562918516ba0c6.1686289721.git.quic_varada@quicinc.com [bjorn: Split from driver patch, to allow merging into dts tree] Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09clk: qcom: mmcc-msm8974: Add OXILICX_GDSC for msm8226Luca Weiss
On msm8226 we also have OXILICX_GDSC but we need a slighly different config, with a .cxcs defined for clock but with no parent. Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Link: https://lore.kernel.org/r/20230506-msm8226-oxilicx-v2-1-f7e4ebff3d61@z3ntu.xyz Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-09Linux 6.5-rc1v6.5-rc1Linus Torvalds
2023-07-09MAINTAINERS 2: Electric BoogalooLinus Torvalds
We just sorted the entries and fields last release, so just out of a perverse sense of curiosity, I decided to see if we can keep things ordered for even just one release. The answer is "No. No we cannot". I suggest that all kernel developers will need weekly training sessions, involving a lot of Big Bird and Sesame Street. And at the yearly maintainer summit, we will all sing the alphabet song together. I doubt I will keep doing this. At some point "perverse sense of curiosity" turns into just a cold dark place filled with sadness and despair. Repeats: 80e62bc8487b ("MAINTAINERS: re-sort all entries and fields") Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-09Merge tag 'dma-mapping-6.5-2023-07-09' of ↵Linus Torvalds
git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fixes from Christoph Hellwig: - swiotlb area sizing fixes (Petr Tesarik) * tag 'dma-mapping-6.5-2023-07-09' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: reduce the number of areas to match actual memory pool size swiotlb: always set the number of areas before allocating the pool
2023-07-09Merge tag 'irq_urgent_for_v6.5_rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq update from Borislav Petkov: - Optimize IRQ domain's name assignment * tag 'irq_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqdomain: Use return value of strreplace()
2023-07-09Merge tag 'x86_urgent_for_v6.5_rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fpu fix from Borislav Petkov: - Do FPU AP initialization on Xen PV too which got missed by the recent boot reordering work * tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/xen: Fix secondary processors' FPU initialization
2023-07-09Merge tag 'x86-core-2023-07-09' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Thomas Gleixner: "A single fix for the mechanism to park CPUs with an INIT IPI. On shutdown or kexec, the kernel tries to park the non-boot CPUs with an INIT IPI. But the same code path is also used by the crash utility. If the CPU which panics is not the boot CPU then it sends an INIT IPI to the boot CPU which resets the machine. Prevent this by validating that the CPU which runs the stop mechanism is the boot CPU. If not, leave the other CPUs in HLT" * tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/smp: Don't send INIT to boot CPU
2023-07-09Merge tag 'mips_6.5_1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS fixes from Thomas Bogendoerfer: - fixes for KVM - fix for loongson build and cpu probing - DT fixes * tag 'mips_6.5_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: kvm: Fix build error with KVM_MIPS_DEBUG_COP0_COUNTERS enabled MIPS: dts: add missing space before { MIPS: Loongson: Fix build error when make modules_install MIPS: KVM: Fix NULL pointer dereference MIPS: Loongson: Fix cpu_probe_loongson() again
2023-07-09Merge tag 'xfs-6.5-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds
Pull xfs fix from Darrick Wong: "Nothing exciting here, just getting rid of a gcc warning that I got tired of seeing when I turn on gcov" * tag 'xfs-6.5-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: fix uninit warning in xfs_growfs_data
2023-07-09Merge tag '6.5-rc-smb3-client-fixes-part2' of ↵Linus Torvalds
git://git.samba.org/sfrench/cifs-2.6 Pull more smb client updates from Steve French: - fix potential use after free in unmount - minor cleanup - add worker to cleanup stale directory leases * tag '6.5-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6: cifs: Add a laundromat thread for cached directories smb: client: remove redundant pointer 'server' cifs: fix session state transition to avoid use-after-free issue
2023-07-09Merge tag 'ntb-6.5' of https://github.com/jonmason/ntbLinus Torvalds
Pull NTB updates from Jon Mason: "Fixes for pci_clean_master, error handling in driver inits, and various other issues/bugs" * tag 'ntb-6.5' of https://github.com/jonmason/ntb: ntb: hw: amd: Fix debugfs_create_dir error checking ntb.rst: Fix copy and paste error ntb_netdev: Fix module_init problem ntb: intel: Remove redundant pci_clear_master ntb: epf: Remove redundant pci_clear_master ntb_hw_amd: Remove redundant pci_clear_master ntb: idt: drop redundant pci_enable_pcie_error_reporting() MAINTAINERS: git://github -> https://github.com for jonmason NTB: EPF: fix possible memory leak in pci_vntb_probe() NTB: ntb_tool: Add check for devm_kcalloc NTB: ntb_transport: fix possible memory leak while device_register() fails ntb: intel: Fix error handling in intel_ntb_pci_driver_init() NTB: amd: Fix error handling in amd_ntb_pci_driver_init() ntb: idt: Fix error handling in idt_pci_driver_init()
2023-07-08mm: lock newly mapped VMA with corrected orderingHugh Dickins
Lockdep is certainly right to complain about (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_write+0x2d/0x3f but task is already holding lock: (&mapping->i_mmap_rwsem){+.+.}-{3:3}, at: mmap_region+0x4dc/0x6db Invert those to the usual ordering. Fixes: 33313a747e81 ("mm: lock newly mapped VMA which can be modified after it becomes visible") Cc: stable@vger.kernel.org Signed-off-by: Hugh Dickins <hughd@google.com> Tested-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08Merge tag 'mm-hotfixes-stable-2023-07-08-10-43' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull hotfixes from Andrew Morton: "16 hotfixes. Six are cc:stable and the remainder address post-6.4 issues" The merge undoes the disabling of the CONFIG_PER_VMA_LOCK feature, since it was all hopefully fixed in mainline. * tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib: dhry: fix sleeping allocations inside non-preemptable section kasan, slub: fix HW_TAGS zeroing with slub_debug kasan: fix type cast in memory_is_poisoned_n mailmap: add entries for Heiko Stuebner mailmap: update manpage link bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page MAINTAINERS: add linux-next info mailmap: add Markus Schneider-Pargmann writeback: account the number of pages written back mm: call arch_swap_restore() from do_swap_page() squashfs: fix cache race with migration mm/hugetlb.c: fix a bug within a BUG(): inconsistent pte comparison docs: update ocfs2-devel mailing list address MAINTAINERS: update ocfs2-devel mailing list address mm: disable CONFIG_PER_VMA_LOCK until its fixed fork: lock VMAs of the parent process when forking
2023-07-08fork: lock VMAs of the parent process when forkingSuren Baghdasaryan
When forking a child process, the parent write-protects anonymous pages and COW-shares them with the child being forked using copy_present_pte(). We must not take any concurrent page faults on the source vma's as they are being processed, as we expect both the vma and the pte's behind it to be stable. For example, the anon_vma_fork() expects the parents vma->anon_vma to not change during the vma copy. A concurrent page fault on a page newly marked read-only by the page copy might trigger wp_page_copy() and a anon_vma_prepare(vma) on the source vma, defeating the anon_vma_clone() that wasn't done because the parent vma originally didn't have an anon_vma, but we now might end up copying a pte entry for a page that has one. Before the per-vma lock based changes, the mmap_lock guaranteed exclusion with concurrent page faults. But now we need to do a vma_start_write() to make sure no concurrent faults happen on this vma while it is being processed. This fix can potentially regress some fork-heavy workloads. Kernel build time did not show noticeable regression on a 56-core machine while a stress test mapping 10000 VMAs and forking 5000 times in a tight loop shows ~5% regression. If such fork time regression is unacceptable, disabling CONFIG_PER_VMA_LOCK should restore its performance. Further optimizations are possible if this regression proves to be problematic. Suggested-by: David Hildenbrand <david@redhat.com> Reported-by: Jiri Slaby <jirislaby@kernel.org> Closes: https://lore.kernel.org/all/dbdef34c-3a07-5951-e1ae-e9c6e3cdf51b@kernel.org/ Reported-by: Holger Hoffstätte <holger@applied-asynchrony.com> Closes: https://lore.kernel.org/all/b198d649-f4bf-b971-31d0-e8433ec2a34c@applied-asynchrony.com/ Reported-by: Jacob Young <jacobly.alt@gmail.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624 Fixes: 0bff0aaea03e ("x86/mm: try VMA lock-based page fault handling first") Cc: stable@vger.kernel.org Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08mm: lock newly mapped VMA which can be modified after it becomes visibleSuren Baghdasaryan
mmap_region adds a newly created VMA into VMA tree and might modify it afterwards before dropping the mmap_lock. This poses a problem for page faults handled under per-VMA locks because they don't take the mmap_lock and can stumble on this VMA while it's still being modified. Currently this does not pose a problem since post-addition modifications are done only for file-backed VMAs, which are not handled under per-VMA lock. However, once support for handling file-backed page faults with per-VMA locks is added, this will become a race. Fix this by write-locking the VMA before inserting it into the VMA tree. Other places where a new VMA is added into VMA tree do not modify it after the insertion, so do not need the same locking. Cc: stable@vger.kernel.org Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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