linux-dev/arch/x86/platform/uv, branch master

Merge tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-05-24T02:11:08Z

Pull x86 platform updates from Borislav Petkov: - A couple of changes enabling SGI UV5 support * tag 'x86_platform_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/uv: Log gap hole end size x86/platform/uv: Update TSC sync state for UV5 x86/platform/uv: Update NMI Handler for UV5

x86: Replace cpumask_weight() with cpumask_empty() where appropriate

2022-04-10T20:35:38Z

In some cases, x86 code calls cpumask_weight() to check if any bit of a given cpumask is set. This can be done more efficiently with cpumask_empty() because cpumask_empty() stops traversing the cpumask as soon as it finds first set bit, while cpumask_weight() counts all bits unconditionally. Signed-off-by: Yury Norov Signed-off-by: Thomas Gleixner Reviewed-by: Steve Wahl Link: https://lore.kernel.org/r/20220210224933.379149-17-yury.norov@gmail.com

x86/platform/uv: Update NMI Handler for UV5

2022-04-07T15:23:20Z

Update NMI handler for UV5 hardware. A platform register changed, and UV5 only uses one of the two NMI methods used on previous hardware. Signed-off-by: Mike Travis Signed-off-by: Steve Wahl Signed-off-by: Borislav Petkov Reviewed-by: Dimitri Sivanich Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220406195149.228164-2-steve.wahl@hpe.com

Merge tag 'x86_platform_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-04-26T16:34:19Z

Pull x86 platform updates from Borislav Petkov: "A bunch of SGI UV improvements, fixes and cleanups" * tag 'x86_platform_for_v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/uv: Remove dead !CONFIG_KEXEC_CORE code x86/platform/uv: Fix !KEXEC build failure x86/platform/uv: Add more to secondary CPU kdump info x86/platform/uv: Use x2apic enabled bit as set by BIOS to indicate APIC mode x86/platform/uv: Set section block size for hubless architectures x86/platform/uv: Fix indentation warning in Documentation/ABI/testing/sysfs-firmware-sgi_uv

x86/platform/uv: Remove dead !CONFIG_KEXEC_CORE code

2021-04-20T08:08:34Z

The !CONFIG_KEXEC_CORE code in arch/x86/platform/uv/uv_nmi.c was unused, untested and didn't even build for 7 years. Since we fixed this by requiring X86_UV to depend on CONFIG_KEXEC_CORE, remove the (now) dead code. Also move the uv_nmi_kexec_failed definition back up to where the other file-scope global variables are defined. Signed-off-by: Ingo Molnar Cc: Mike Travis Cc: linux-kernel@vger.kernel.org

x86/platform/uv: Add more to secondary CPU kdump info

2021-04-16T10:51:41Z

Add call to run_crash_ipi_callback() to gather more info of what the secondary CPUs were doing to help with failure analysis. Excerpt from Georges: 'It is only changing where crash secondaries will be stalling after having taken care of properly laying down "crash note regs". Please note that "crash note regs" are a key piece of data used by crash dump debuggers to provide a reliable backtrace of running processors.' Secondary change pursuant to a5f526ecb075 ("CodingStyle: Inclusive Terminology"): change master/slave to main/secondary. [ bp: Massage commit message. ] Signed-off-by: Georges Aureau Signed-off-by: Mike Travis Signed-off-by: Borislav Petkov Reviewed-by: Steve Wahl Link: https://lkml.kernel.org/r/20210311151028.82678-1-mike.travis@hpe.com

x86: Fix various typos in comments

2021-03-18T14:31:53Z

Fix ~144 single-word typos in arch/x86/ code comments. Doing this in a single commit should reduce the churn. Signed-off-by: Ingo Molnar Cc: Borislav Petkov Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Paolo Bonzini Cc: Bjorn Helgaas Cc: linux-kernel@vger.kernel.org

Merge tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-12-15T02:59:53Z

Pull x86 apic updates from Thomas Gleixner: "Yet another large set of x86 interrupt management updates: - Simplification and distangling of the MSI related functionality - Let IO/APIC construct the RTE entries from an MSI message instead of having IO/APIC specific code in the interrupt remapping drivers - Make the retrieval of the parent interrupt domain (vector or remap unit) less hardcoded and use the relevant irqdomain callbacks for selection. - Allow the handling of more than 255 CPUs without a virtualized IOMMU when the hypervisor supports it. This has made been possible by the above modifications and also simplifies the existing workaround in the HyperV specific virtual IOMMU. - Cleanup of the historical timer_works() irq flags related inconsistencies" * tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) x86/ioapic: Cleanup the timer_works() irqflags mess iommu/hyper-v: Remove I/O-APIC ID check from hyperv_irq_remapping_select() iommu/amd: Fix IOMMU interrupt generation in X2APIC mode iommu/amd: Don't register interrupt remapping irqdomain when IR is disabled iommu/amd: Fix union of bitfields in intcapxt support x86/ioapic: Correct the PCI/ISA trigger type selection x86/ioapic: Use I/O-APIC ID for finding irqdomain, not index x86/hyperv: Enable 15-bit APIC ID if the hypervisor supports it x86/kvm: Enable 15-bit extension when KVM_FEATURE_MSI_EXT_DEST_ID detected iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available x86/apic: Support 15 bits of APIC ID in MSI where available x86/ioapic: Handle Extended Destination ID field in RTE iommu/vt-d: Simplify intel_irq_remapping_select() x86: Kill all traces of irq_remapping_get_irq_domain() x86/ioapic: Use irq_find_matching_fwspec() to find remapping irqdomain x86/hpet: Use irq_find_matching_fwspec() to find remapping irqdomain iommu/hyper-v: Implement select() method on remapping irqdomain iommu/vt-d: Implement select() method on remapping irqdomain iommu/amd: Implement select() method on remapping irqdomain x86/apic: Add select() method on vector irqdomain ...

x86/platform/uv: Add and export uv_bios_* functions

2020-11-26T11:50:44Z

Add additional uv_bios_call() variant functions to expose information needed by the new uv_sysfs driver. This includes the addition of several new data types defined by UV BIOS and used in the new functions. Signed-off-by: Justin Ernst Signed-off-by: Borislav Petkov Reviewed-by: Steve Wahl Acked-by: Hans de Goede Link: https://lkml.kernel.org/r/20201125175444.279074-3-justin.ernst@hpe.com

x86/platform/uv: Remove existing /sys/firmware/sgi_uv/ interface

2020-11-26T11:08:17Z

Remove existing interface at /sys/firmware/sgi_uv/, created by arch/x86/platform/uv/uv_sysfs.c This interface includes: /sys/firmware/sgi_uv/coherence_id /sys/firmware/sgi_uv/partition_id Both coherence_id and partition_id will be re-introduced via a new uv_sysfs driver. Signed-off-by: Justin Ernst Signed-off-by: Borislav Petkov Reviewed-by: Steve Wahl Acked-by: Hans de Goede Link: https://lkml.kernel.org/r/20201125175444.279074-2-justin.ernst@hpe.com