- Aug 03, 2023
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YueHaibing authored
Since commit 30fbee49 ("Staging: hv: vmbus: Get rid of the unused function vmbus_ontimer()") this is not used anymore, so can remove it. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Reviewed-by:
Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20230725142108.27280-1-yuehaibing@huawei.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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Saurabh Sengar authored
Hyper-V can run VMs at different privilege "levels" known as Virtual Trust Levels (VTL). Sometimes, it chooses to run two different VMs at different levels but they share some of their address space. In such setups VTL2 (higher level VM) has visibility of all of the VTL0 (level 0) memory space. When the CONFIG_X86_MPPARSE is enabled for VTL2, the VTL2 kernel performs a search within the low memory to locate MP tables. However, in systems where VTL0 manages the low memory and may contain valid tables, this scanning can result in incorrect MP table information being provided to the VTL2 kernel, mistakenly considering VTL0's MP table as its own Add noop functions to avoid MP parse scan by VTL2. Signed-off-by:
Saurabh Sengar <ssengar@linux.microsoft.com> Acked-by:
Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/r/1687537688-5397-1-git-send-email-ssengar@linux.microsoft.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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- Jul 24, 2023
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Ani Sinha authored
It is incorrect in python to compare integer values using the "is" keyword. The "is" keyword in python is used to compare references to two objects, not their values. Newer version of python3 (version 3.8) throws a warning when such incorrect comparison is made. For value comparison, "==" should be used. Fix this in the code and suppress the following warning: /usr/sbin/vmbus_testing:167: SyntaxWarning: "is" with a literal. Did you mean "=="? Signed-off-by:
Ani Sinha <anisinha@redhat.com> Link: https://lore.kernel.org/r/20230705134408.6302-1-anisinha@redhat.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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ZhiHu authored
The following checkpatch warning is removed: WARNING: Use #include <linux/io.h> instead of <asm/io.h> Signed-off-by:
ZhiHu <huzhi001@208suo.com> Reviewed-by:
Michael Kelley <mikelley@microsoft.com> Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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Michael Kelley authored
On hardware that supports Indirect Branch Tracking (IBT), Hyper-V VMs with ConfigVersion 9.3 or later support IBT in the guest. However, current versions of Hyper-V have a bug in that there's not an ENDBR64 instruction at the beginning of the hypercall page. Since hypercalls are made with an indirect call to the hypercall page, all hypercall attempts fail with an exception and Linux panics. A Hyper-V fix is in progress to add ENDBR64. But guard against the Linux panic by clearing X86_FEATURE_IBT if the hypercall page doesn't start with ENDBR. The VM will boot and run without IBT. If future Linux 32-bit kernels were to support IBT, additional hypercall page hackery would be needed to make IBT work for such kernels in a Hyper-V VM. Cc: stable@vger.kernel.org Signed-off-by:
Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1690001476-98594-1-git-send-email-mikelley@microsoft.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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- Jun 29, 2023
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Nischala Yelchuri authored
Several places in code for Hyper-V reference the per-CPU variable hyperv_pcpu_input_arg. Older code uses a multi-line sequence to reference the variable, and usually includes a cast. Newer code does a much simpler direct assignment. The latter is preferable as the complexity of the older code is unnecessary. Update older code to use the simpler direct assignment. Signed-off-by:
Nischala Yelchuri <niyelchu@linux.microsoft.com> Link: https://lore.kernel.org/r/1687286438-9421-1-git-send-email-niyelchu@linux.microsoft.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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Kameron Carr authored
Currently hv_free_hyperv_page() takes an unsigned long argument, which is inconsistent with the void * return value from the corresponding hv_alloc_hyperv_page() function and variants. This creates unnecessary extra casting. Change the hv_free_hyperv_page() argument type to void *. Also remove redundant casts from invocations of hv_alloc_hyperv_page() and variants. Signed-off-by:
Kameron Carr <kameroncarr@linux.microsoft.com> Reviewed-by:
Nuno Das Neves <nunodasneves@linux.microsoft.com> Reviewed-by:
Dexuan Cui <decui@microsoft.com> Link: https://lore.kernel.org/r/1687558189-19734-1-git-send-email-kameroncarr@linux.microsoft.com Signed-off-by:
Wei Liu <wei.liu@kernel.org>
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- Jun 26, 2023
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Nothing fancy. Two driver and one DT binding fix" * tag 'i2c-for-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle i2c: qup: Add missing unwind goto in qup_i2c_probe() dt-bindings: i2c: opencores: Add missing type for "regstep"
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Borislav Petkov: - Drop the __weak attribute from a function prototype as it otherwise leads to the function getting replaced by a dummy stub - Fix the umask value setup of the frontend event as former is different on two Intel cores * tag 'perf_urgent_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Fix the FRONTEND encoding on GNR and MTL perf/core: Drop __weak attribute from arch_perf_update_userpage() prototype
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fix from Borislav Petkov: - Add a ORC format hash to vmlinux and modules in order for other tools which use it, to detect changes to it and adapt accordingly * tag 'objtool_urgent_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/unwind/orc: Add ELF section with ORC version identifier
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Do not use set_pgd() when updating the KASLR trampoline pgd entry because that updates the user PGD too on KPTI builds, resulting in memory corruption - Prevent a panic in the IO-APIC setup code due to conflicting command line parameters * tag 'x86_urgent_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys x86/mm: Avoid using set_pgd() outside of real PGD pages
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- Jun 24, 2023
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Very quiet last week, just two misc fixes, one dp-mst and one qaic: qaic: - dma-buf import fix dp-mst: - fix NULL ptr deref" [ It turns out it was a quiet week because Alex Deucher hadn't sent in his pending AMD changes. So they are coming next - Linus ] * tag 'drm-fixes-2023-06-23' of git://anongit.freedesktop.org/drm/drm: drm: use mgr->dev in drm_dbg_kms in drm_dp_add_payload_part2 accel/qaic: Call DRM helper function to destroy prime GEM
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fixes from Arnd Bergmann: "The final bug fixes for Qualcomm and Rockchips came in, all of them for devicetree files: - Devices on Qualcomm SC7180/SC7280 that are cache coherent are now marked so correctly to fix a regression after a change in kernel behavior - Rockchips has a few minor changes for correctness of regulator and cache properties, as well as fixes for incorrect behavior of the RK3568 PCI controller and reset pins on two boards" * tag 'arm-fixes-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: arm64: dts: qcom: sc7280: Mark SCM as dma-coherent for chrome devices arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for trogdor arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for IDP dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent arm64: dts: rockchip: Fix rk356x PCIe register and range mappings arm64: dts: rockchip: fix button reset pin for nanopi r5c arm64: dts: rockchip: fix nEXTRST on SOQuartz arm64: dts: rockchip: add missing cache properties arm64: dts: rockchip: fix USB regulator on ROCK64
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fix from David Sterba: "Unfortunately the recent u32 overflow fix was not complete, there was one conversion left, assertion not triggered by my tests but caught by Qu's fstests case. The "cleanup for later" has been promoted to a proper fix and wraps all uses of the stripe left shift so the diffstat has grown but leaves no potentially problematic uses. We should have done it that way before, sorry" * tag 'for-6.4-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: fix remaining u32 overflows when left shifting stripe_nr
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git://git.kernel.dk/linuxLinus Torvalds authored
Pull block fix from Jens Axboe: "It's apparently the week of 'fixup something from last week', because the same is true for this block pull request. Fix up a lock grab that needs to be IRQ saving, rather than just IRQ disabling, in the block cgroup code" * tag 'block-6.4-2023-06-23' of git://git.kernel.dk/linux: block: make sure local irq is disabled when calling __blkcg_rstat_flush
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull iommu fix from Joerg Roedel: - Fix potential memory leak in AMD IOMMU domain allocation path * tag 'iommu-fix-v6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Fix possible memory leak of 'domain'
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "Three oneliner fixes: one for a thinko in SOF SoundWire code and two HD-audio quirks for ASUS laptops. All device-specific and should be safe to apply" * tag 'sound-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda/realtek: Add quirk for ASUS ROG GV601V ALSA: hda/realtek: Add quirk for ASUS ROG G634Z ASoC: intel: sof_sdw: Fixup typo in device link checking
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linuxLinus Torvalds authored
Pull gpio fixes from Bartosz Golaszewski: - fix IRQ initialization in gpiochip_irqchip_add_domain() - add a missing return value check for platform_get_irq() in gpio-sifive - don't free irq_domains which GPIOLIB does not manage * tag 'gpio-fixes-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpiolib: Fix irq_domain resource tracking for gpiochip_irqchip_add_domain() gpio: sifive: add missing check for platform_get_irq gpiolib: Fix GPIO chip IRQ initialization restriction
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Arnd Bergmann authored
Merge tag 'qcom-arm64-fixes-for-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes One last Qualcomm ARM64 DeviceTree fix for v6.4 Changes related to cache management for DMA memory caused WiFi to stop work on SC7180 and SC7280 based products, using TF-A. These changes marks the relevant device dma-coherent to correct the behavior. * tag 'qcom-arm64-fixes-for-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: arm64: dts: qcom: sc7280: Mark SCM as dma-coherent for chrome devices arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for trogdor arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for IDP dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent Link: https://lore.kernel.org/r/20230622203248.106422-1-andersson@kernel.org Signed-off-by:
Arnd Bergmann <arnd@arndb.de>
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Linus Torvalds authored
Dave Airlie reports that gcc-13.1.1 has started complaining about some of the workqueue code in 32-bit arm builds: kernel/workqueue.c: In function ‘get_work_pwq’: kernel/workqueue.c:713:24: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] 713 | return (void *)(data & WORK_STRUCT_WQ_DATA_MASK); | ^ [ ... a couple of other cases ... ] and while it's not immediately clear exactly why gcc started complaining about it now, I suspect it's some C23-induced enum type handlign fixup in gcc-13 is the cause. Whatever the reason for starting to complain, the code and data types are indeed disgusting enough that the complaint is warranted. The wq code ends up creating various "helper constants" (like that WORK_STRUCT_WQ_DATA_MASK) using an enum type, which is all kinds of confused. The mask needs to be 'unsigned long', not some unspecified enum type. To make matters worse, the actual "mask and cast to a pointer" is repeated a couple of times, and the cast isn't even always done to the right pointer, but - as the error case above - to a 'void *' with then the compiler finishing the job. That's now how we roll in the kernel. So create the masks using the proper types rather than some ambiguous enumeration, and use a nice helper that actually does the type conversion in one well-defined place. Incidentally, this magically makes clang generate better code. That, admittedly, is really just a sign of clang having been seriously confused before, and cleaning up the typing unconfuses the compiler too. Reported-by:
Dave Airlie <airlied@gmail.com> Link: https://lore.kernel.org/lkml/CAPM=9twNnV4zMCvrPkw3H-ajZOH-01JVh_kDrxdPYQErz8ZTdA@mail.gmail.com/ Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tejun Heo <tj@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- Jun 23, 2023
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Clark Wang authored
Claim clkhi and clklo as integer type to avoid possible calculation errors caused by data overflow. Fixes: a55fa9d0 ("i2c: imx-lpi2c: add low power i2c bus driver") Signed-off-by:
Clark Wang <xiaoning.wang@nxp.com> Signed-off-by:
Carlos Song <carlos.song@nxp.com> Reviewed-by:
Andi Shyti <andi.shyti@kernel.org> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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Shuai Jiang authored
Smatch Warns: drivers/i2c/busses/i2c-qup.c:1784 qup_i2c_probe() warn: missing unwind goto? The goto label "fail_runtime" and "fail" will disable qup->pclk, but here qup->pclk failed to obtain, in order to be consistent, change the direct return to goto label "fail_dma". Fixes: 9cedf3b2 ("i2c: qup: Add bam dma capabilities") Signed-off-by:
Shuai Jiang <d202180596@hust.edu.cn> Reviewed-by:
Dongliang Mu <dzm91@hust.edu.cn> Reviewed-by:
Andi Shyti <andi.shyti@kernel.org> Signed-off-by:
Wolfram Sang <wsa@kernel.org> Cc: <stable@vger.kernel.org> # v4.6+
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Rob Herring authored
"regstep" may be deprecated, but it still needs a type. Fixes: 8ad69f49 ("dt-bindings: i2c: convert ocores binding to yaml") Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Peter Korsgaard <peter@korsgaard.com> Reviewed-by:
Conor Dooley <conor.dooley@microchip.com> Acked-by:
Andi Shyti <andi.shyti@kernel.org> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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git://anongit.freedesktop.org/drm/drm-miscDave Airlie authored
drm-misc-fixes for v6.4: - Qaic imported dma-buf fix. - Fix null pointer deref when printing a dp-mst message. Signed-off-by:
Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <dev@lankhorst.se> Link: https://patchwork.freedesktop.org/patch/msgid/e96b1965-ba67-7cc5-2358-826eb5b9b998@lankhorst.se
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Paolo Abeni: "Including fixes from ipsec, bpf, mptcp and netfilter. Current release - regressions: - netfilter: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain - eth: mlx5e: - fix scheduling of IPsec ASO query while in atomic - free IRQ rmap and notifier on kernel shutdown Current release - new code bugs: - phy: manual remove LEDs to ensure correct ordering Previous releases - regressions: - mptcp: fix possible divide by zero in recvmsg() - dsa: revert "net: phy: dp83867: perform soft reset and retain established link" Previous releases - always broken: - sched: netem: acquire qdisc lock in netem_change() - bpf: - fix verifier id tracking of scalars on spill - fix NULL dereference on exceptions - accept function names that contain dots - netfilter: disallow element updates of bound anonymous sets - mptcp: ensure listener is unhashed before updating the sk status - xfrm: - add missed call to delete offloaded policies - fix inbound ipv4/udp/esp packets to UDPv6 dualstack sockets - selftests: fixes for FIPS mode - dsa: mt7530: fix multiple CPU ports, BPDU and LLDP handling - eth: sfc: use budget for TX completions Misc: - wifi: iwlwifi: add support for SO-F device with PCI id 0x7AF0" * tag 'net-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (74 commits) revert "net: align SO_RCVMARK required privileges with SO_MARK" net: wwan: iosm: Convert single instance struct member to flexible array sch_netem: acquire qdisc lock in netem_change() selftests: forwarding: Fix race condition in mirror installation wifi: mac80211: report all unusable beacon frames mptcp: ensure listener is unhashed before updating the sk status mptcp: drop legacy code around RX EOF mptcp: consolidate fallback and non fallback state machine mptcp: fix possible list corruption on passive MPJ mptcp: fix possible divide by zero in recvmsg() mptcp: handle correctly disconnect() failures bpf: Force kprobe multi expected_attach_type for kprobe_multi link bpf/btf: Accept function names that contain dots Revert "net: phy: dp83867: perform soft reset and retain established link" net: mdio: fix the wrong parameters netfilter: nf_tables: Fix for deleting base chains with payload netfilter: nfnetlink_osf: fix module autoload netfilter: nf_tables: drop module reference after updating chain netfilter: nf_tables: disallow timeout for anonymous sets netfilter: nf_tables: disallow updates of anonymous sets ...
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: "ARM: - Correctly save/restore PMUSERNR_EL0 when host userspace is using PMU counters directly - Fix GICv2 emulation on GICv3 after the locking rework - Don't use smp_processor_id() in kvm_pmu_probe_armpmu(), and document why Generic: - Avoid setting page table entries pointing to a deleted memslot if a host page table entry is changed concurrently with the deletion" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Avoid illegal stage2 mapping on invalid memory slot KVM: arm64: Use raw_smp_processor_id() in kvm_pmu_probe_armpmu() KVM: arm64: Restore GICv2-on-GICv3 functionality KVM: arm64: PMU: Don't overwrite PMUSERENR with vcpu loaded KVM: arm64: PMU: Restore the host's PMUSERENR_EL0
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fix from Michael Ellerman: - Disable IRQs when switching mm in exit_lazy_flush_tlb() called from exit_mmap() Thanks to Nicholas Piggin and Sachin Sant. * tag 'powerpc-6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s/radix: Fix exit lazy tlb mm switch with irqs enabled
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pciLinus Torvalds authored
Pull pci fix from Bjorn Helgaas: - Transfer Intel LGM GW PCIe maintenance from Rahul Tanwar to Chuanhua Lei (Zhu YiXin) * tag 'pci-v6.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: MAINTAINERS: Add Chuanhua Lei as Intel LGM GW PCIe maintainer
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: - Fix support for deferred probing for several host drivers - litex_mmc: Use async probe as it's common for all mmc hosts - meson-gx: Fix bug when scheduling while atomic - mmci_stm32: Fix max busy timeout calculation - sdhci-msm: Disable broken 64-bit DMA on MSM8916 * tag 'mmc-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: usdhi60rol0: fix deferred probing mmc: sunxi: fix deferred probing mmc: sh_mmcif: fix deferred probing mmc: sdhci-spear: fix deferred probing mmc: sdhci-acpi: fix deferred probing mmc: owl: fix deferred probing mmc: omap_hsmmc: fix deferred probing mmc: omap: fix deferred probing mmc: mvsdio: fix deferred probing mmc: mtk-sd: fix deferred probing mmc: meson-gx: fix deferred probing mmc: bcm2835: fix deferred probing mmc: litex_mmc: set PROBE_PREFER_ASYNCHRONOUS mmc: meson-gx: remove redundant mmc_request_done() call from irq context mmc: mmci: stm32: fix max busy timeout calculation mmc: sdhci-msm: Disable broken 64-bit DMA on MSM8916
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fix from Hans de Goede: "One small fix for an AMD PMF driver issue which is causing issues for users of just released AMD laptop models" * tag 'platform-drivers-x86-v6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86/amd/pmf: Register notify handler only if SPS is enabled
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git://git.kernel.dk/linuxLinus Torvalds authored
Pull io_uring fixes from Jens Axboe: "A fix for a race condition with poll removal and linked timeouts, and then a few followup fixes/tweaks for the msg_control patch from last week. Not super important, particularly the sparse fixup, as it was broken before that recent commit. But let's get it sorted for real for this release, rather than just have it broken a bit differently" * tag 'io_uring-6.4-2023-06-21' of git://git.kernel.dk/linux: io_uring/net: use the correct msghdr union member in io_sendmsg_copy_hdr io_uring/net: disable partial retries for recvmsg with cmsg io_uring/net: clear msg_controllen on partial sendmsg retry io_uring/poll: serialize poll linked timer start with poll removal
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fixes from Tejun Heo: "It's late but here are two bug fixes. Both fix problems which can be severe but are very confined in scope. The risk to most use cases should be minimal. - Fix for an old bug which triggers if a cgroup subsystem is remounted to a different hierarchy while someone is reading its cgroup.procs/tasks file. The risk is pretty low given how seldom cgroup subsystems are moved across hierarchies. - We moved cpus_read_lock() outside of cgroup internal locks a while ago but forgot to update the legacy_freezer leading to lockdep triggers. Fixed" * tag 'cgroup-for-6.4-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: Do not corrupt task iteration when rebinding subsystem cgroup,freezer: hold cpu_hotplug_lock before freezer_mutex in freezer_css_{online,offline}()
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Paolo Bonzini authored
Merge tag 'kvmarm-fixes-6.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 fixes for 6.4, take #4 - Correctly save/restore PMUSERNR_EL0 when host userspace is using PMU counters directly - Fix GICv2 emulation on GICv3 after the locking rework - Don't use smp_processor_id() in kvm_pmu_probe_armpmu(), and document why...
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Douglas Anderson authored
Just like for sc7180 devices using the Chrome bootflow (AKA trogdor and IDP), sc7280 devices using the Chrome bootflow also need their firmware marked dma-coherent. On sc7280 this wasn't causing WiFi to fail to startup, since WiFi works differently there. However, on sc7280 devices we were still getting the message at bootup after commit 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()"""): qcom_scm firmware:scm: Assign memory protection call failed -22 qcom_rmtfs_mem 9c900000.memory: assign memory failed qcom_rmtfs_mem: probe of 9c900000.memory failed with error -22 We should mark SCM properly just like we did for trogdor. Fixes: 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()""") Fixes: 7a1f4e7f ("arm64: dts: qcom: sc7280: Add basic dts/dtsi files for sc7280 soc") Signed-off-by:
Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230616081440.v2.4.I21dc14a63327bf81c6bb58fe8ed91dbdc9849ee2@changeid Signed-off-by:
Bjorn Andersson <andersson@kernel.org>
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Douglas Anderson authored
Trogdor devices use firmware backed by TF-A instead of Qualcomm's normal TZ. On TF-A we end up mapping memory as cacheable. Specifically, you can see in Trogdor's TF-A code [1] in qti_sip_mem_assign() that we call qti_mmap_add_dynamic_region() with MT_RO_DATA. This translates down to MT_MEMORY instead of MT_NON_CACHEABLE or MT_DEVICE. Apparently Qualcomm's normal TZ implementation maps the memory as non-cacheable. Let's add the "dma-coherent" attribute to the SCM for trogdor. Adding "dma-coherent" like this fixes WiFi on sc7180-trogdor devices. WiFi was broken as of commit 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()"""). Specifically at bootup we'd get: qcom_scm firmware:scm: Assign memory protection call failed -22 qcom_rmtfs_mem 94600000.memory: assign memory failed qcom_rmtfs_mem: probe of 94600000.memory failed with error -22 From discussion on the mailing lists [2] and over IRC [3], it was determined that we should always have been tagging the SCM as dma-coherent on trogdor but that the old "invalidate" happened to make things work most of the time. Tagging it properly like this is a much more robust solution. [1] https://chromium.googlesource.com/chromiumos/third_party/arm-trusted-firmware/+/refs/heads/firmware-trogdor-13577.B/plat/qti/common/src/qti_syscall.c [2] https://lore.kernel.org/r/20230614165904.1.I279773c37e2c1ed8fbb622ca6d1397aea0023526@changeid [3] https://oftc.irclog.whitequark.org/linux-msm/2023-06-15 Fixes: 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()""") Fixes: 7ec3e673 ("arm64: dts: qcom: sc7180-trogdor: add initial trogdor and lazor dt") Reviewed-by:
Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by:
Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230616081440.v2.3.Ic62daa649b47b656b313551d646c4de9a7da4bd4@changeid Signed-off-by:
Bjorn Andersson <andersson@kernel.org>
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Douglas Anderson authored
sc7180-idp is, for most intents and purposes, a trogdor device. Specifically, sc7180-idp is designed to run the same style of firmware as trogdor devices. This can be seen from the fact that IDP has the same "Reserved memory changes" in its device tree that trogdor has. Recently it was realized that we need to mark SCM as dma-coherent to match what trogdor's style of firmware (based on TF-A) does [1]. That means we need this dma-coherent tag on IDP as well. Without this, on newer versions of Linux, specifically those with commit 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()"""), WiFi will fail to work. At bootup you'll see: qcom_scm firmware:scm: Assign memory protection call failed -22 qcom_rmtfs_mem 94600000.memory: assign memory failed qcom_rmtfs_mem: probe of 94600000.memory failed with error -22 [1] https://lore.kernel.org/r/20230615145253.1.Ic62daa649b47b656b313551d646c4de9a7da4bd4@changeid Fixes: 7bd6680b ("Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()""") Fixes: f5ab220d ("arm64: dts: qcom: sc7180: Add remoteproc enablers") Signed-off-by:
Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20230616081440.v2.2.I3c17d546d553378aa8a0c68c3fe04bccea7cba17@changeid Signed-off-by:
Bjorn Andersson <andersson@kernel.org>
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Douglas Anderson authored
Trogdor devices use firmware backed by TF-A instead of Qualcomm's normal TZ. On TF-A we end up mapping memory as cacheable. Specifically, you can see in Trogdor's TF-A code [1] in qti_sip_mem_assign() that we call qti_mmap_add_dynamic_region() with MT_RO_DATA. This translates down to MT_MEMORY instead of MT_NON_CACHEABLE or MT_DEVICE. Let's allow devices like trogdor to be described properly by allowing "dma-coherent" in the SCM node. Signed-off-by:
Douglas Anderson <dianders@chromium.org> Acked-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid Signed-off-by:
Bjorn Andersson <andersson@kernel.org>
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Gavin Shan authored
We run into guest hang in edk2 firmware when KSM is kept as running on the host. The edk2 firmware is waiting for status 0x80 from QEMU's pflash device (TYPE_PFLASH_CFI01) during the operation of sector erasing or buffered write. The status is returned by reading the memory region of the pflash device and the read request should have been forwarded to QEMU and emulated by it. Unfortunately, the read request is covered by an illegal stage2 mapping when the guest hang issue occurs. The read request is completed with QEMU bypassed and wrong status is fetched. The edk2 firmware runs into an infinite loop with the wrong status. The illegal stage2 mapping is populated due to same page sharing by KSM at (C) even the associated memory slot has been marked as invalid at (B) when the memory slot is requested to be deleted. It's notable that the active and inactive memory slots can't be swapped when we're in the middle of kvm_mmu_notifier_change_pte() because kvm->mn_active_invalidate_count is elevated, and kvm_swap_active_memslots() will busy loop until it reaches to zero again. Besides, the swapping from the active to the inactive memory slots is also avoided by holding &kvm->srcu in __kvm_handle_hva_range(), corresponding to synchronize_srcu_expedited() in kvm_swap_active_memslots(). CPU-A CPU-B ----- ----- ioctl(kvm_fd, KVM_SET_USER_MEMORY_REGION) kvm_vm_ioctl_set_memory_region kvm_set_memory_region __kvm_set_memory_region kvm_set_memslot(kvm, old, NULL, KVM_MR_DELETE) kvm_invalidate_memslot kvm_copy_memslot kvm_replace_memslot kvm_swap_active_memslots (A) kvm_arch_flush_shadow_memslot (B) same page sharing by KSM kvm_mmu_notifier_invalidate_range_start : kvm_mmu_notifier_change_pte kvm_handle_hva_range __kvm_handle_hva_range kvm_set_spte_gfn (C) : kvm_mmu_notifier_invalidate_range_end Fix the issue by skipping the invalid memory slot at (C) to avoid the illegal stage2 mapping so that the read request for the pflash's status is forwarded to QEMU and emulated by it. In this way, the correct pflash's status can be returned from QEMU to break the infinite loop in the edk2 firmware. We tried a git-bisect and the first problematic commit is cd4c7183 (" KVM: arm64: Convert to the gfn-based MMU notifier callbacks"). With this, clean_dcache_guest_page() is called after the memory slots are iterated in kvm_mmu_notifier_change_pte(). clean_dcache_guest_page() is called before the iteration on the memory slots before this commit. This change literally enlarges the racy window between kvm_mmu_notifier_change_pte() and memory slot removal so that we're able to reproduce the issue in a practical test case. However, the issue exists since commit d5d8184d ("KVM: ARM: Memory virtualization setup"). Cc: stable@vger.kernel.org # v3.9+ Fixes: d5d8184d ("KVM: ARM: Memory virtualization setup") Reported-by:
Shuai Hu <hshuai@redhat.com> Reported-by:
Zhenyu Zhang <zhenyzha@redhat.com> Signed-off-by:
Gavin Shan <gshan@redhat.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Reviewed-by:
Oliver Upton <oliver.upton@linux.dev> Reviewed-by:
Peter Xu <peterx@redhat.com> Reviewed-by:
Sean Christopherson <seanjc@google.com> Reviewed-by:
Shaoqin Huang <shahuang@redhat.com> Message-Id: <20230615054259.14911-1-gshan@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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- Jun 22, 2023
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Qu Wenruo authored
There was regression caused by a97699d1 ("btrfs: replace map_lookup->stripe_len by BTRFS_STRIPE_LEN") and supposedly fixed by a7299a18 ("btrfs: fix u32 overflows when left shifting stripe_nr"). To avoid code churn the fix was open coding the type casts but unfortunately missed one which was still possible to hit [1]. The missing place was assignment of bioc->full_stripe_logical inside btrfs_map_block(). Fix it by adding a helper that does the safe calculation of the offset and use it everywhere even though it may not be strictly necessary due to already using u64 types. This replaces all remaining "<< BTRFS_STRIPE_LEN_SHIFT" calls. [1] https://lore.kernel.org/linux-btrfs/20230622065438.86402-1-wqu@suse.com/ Fixes: a7299a18 ("btrfs: fix u32 overflows when left shifting stripe_nr") Signed-off-by:
Qu Wenruo <wqu@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> [ update changelog ] Signed-off-by:
David Sterba <dsterba@suse.com>
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