kernel/linux.git/arch/mips/kvm, branch v6.3.6

Merge tag 'kbuild-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2023-02-26T19:53:25+00:00

Pull Kbuild updates from Masahiro Yamada: - Change V=1 option to print both short log and full command log - Allow V=1 and V=2 to be combined as V=12 - Make W=1 detect wrong .gitignore files - Tree-wide cleanups for unused command line arguments passed to Clang - Stop using -Qunused-arguments with Clang - Make scripts/setlocalversion handle only correct release tags instead of any arbitrary annotated tag - Create Debian and RPM source packages without cleaning the source tree - Various cleanups for packaging * tag 'kbuild-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (74 commits) kbuild: rpm-pkg: remove unneeded KERNELRELEASE from modules/headers_install docs: kbuild: remove description of KBUILD_LDS_MODULE .gitattributes: use 'dts' diff driver for *.dtso files kbuild: deb-pkg: improve the usability of source package kbuild: deb-pkg: fix binary-arch and clean in debian/rules kbuild: tar-pkg: use tar rules in scripts/Makefile.package kbuild: make perf-tar*-src-pkg work without relying on git kbuild: deb-pkg: switch over to source format 3.0 (quilt) kbuild: deb-pkg: make .orig tarball a hard link if possible kbuild: deb-pkg: hide KDEB_SOURCENAME from Makefile kbuild: srcrpm-pkg: create source package without cleaning kbuild: rpm-pkg: build binary packages from source rpm kbuild: deb-pkg: create source package without cleaning kbuild: add a tool to list files ignored by git Documentation/llvm: add Chimera Linux, Google and Meta datacenters setlocalversion: use only the correct release tag for git-describe setlocalversion: clean up the construction of version output .gitignore: ignore *.cover and *.mbx kbuild: remove --include-dir MAKEFLAG from top Makefile kbuild: fix trivial typo in comment ...

MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT

2023-01-26T03:41:16+00:00

-Wa,-msoft-float is tested with as-option, which will be a problem for clang with an upcoming change to move as-option to use KBUILD_AFLAGS instead of KBUILD_CFLAGS due to a lack of '-mno-abicalls' in KBUILD_AFLAGS at the point that this check occurs; $(cflags-y) is added to KBUILD_AFLAGS towards the end of this file. clang: error: ignoring '-fno-PIE' option as it cannot be used with implicit usage of -mabicalls and the N64 ABI [-Werror,-Woption-ignored] This could be resolved by switching to a cc-option check but '$(cflags-y)' would need to be added so that '-mno-abicalls' is present for the test. However, this check is no longer necessary, as -msoft-float is supported by all supported assembler versions (GNU as 2.25+ and LLVM 11+). Eliminate GAS_HAS_SET_HARDFLOAT and all of its uses, inlining SET_HARDFLOAT where necessary. Link: https://lore.kernel.org/202209101939.bvk64Fok-lkp@intel.com/ Reported-by: kernel test robot Signed-off-by: Nathan Chancellor Acked-by: Thomas Bogendoerfer Reviewed-by: Nick Desaulniers Reviewed-by: Philippe Mathieu-Daudé Tested-by: Linux Kernel Functional Testing Tested-by: Anders Roxell Signed-off-by: Masahiro Yamada

KVM: Opt out of generic hardware enabling on s390 and PPC

2022-12-29T20:48:37+00:00

Allow architectures to opt out of the generic hardware enabling logic, and opt out on both s390 and PPC, which don't need to manually enable virtualization as it's always on (when available). In addition to letting s390 and PPC drop a bit of dead code, this will hopefully also allow ARM to clean up its related code, e.g. ARM has its own per-CPU flag to track which CPUs have enable hardware due to the need to keep hardware enabled indefinitely when pKVM is enabled. Signed-off-by: Sean Christopherson Acked-by: Anup Patel Message-Id: <20221130230934.1014142-50-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: Drop kvm_arch_check_processor_compat() hook

2022-12-29T20:41:28+00:00

Drop kvm_arch_check_processor_compat() and its support code now that all architecture implementations are nops. Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Eric Farman # s390 Acked-by: Anup Patel Reviewed-by: Kai Huang Message-Id: <20221130230934.1014142-33-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: Drop kvm_arch_{init,exit}() hooks

2022-12-29T20:41:23+00:00

Drop kvm_arch_init() and kvm_arch_exit() now that all implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Eric Farman # s390 Reviewed-by: Philippe Mathieu-Daudé Acked-by: Anup Patel Message-Id: <20221130230934.1014142-30-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: Register die notifier prior to kvm_init()

2022-12-29T20:41:15+00:00

Call kvm_init() only after _all_ setup is complete, as kvm_init() exposes /dev/kvm to userspace and thus allows userspace to create VMs (and call other ioctls). Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20221130230934.1014142-24-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: Setup VZ emulation? directly from kvm_mips_init()

2022-12-29T20:41:13+00:00

Invoke kvm_mips_emulation_init() directly from kvm_mips_init() instead of bouncing through kvm_init()=>kvm_arch_init(). Functionally, this is a glorified nop as invoking kvm_arch_init() is the very first action performed by kvm_init(). Emptying kvm_arch_init() will allow dropping the hook entirely once all architecture implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20221130230934.1014142-23-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: Hardcode callbacks to hardware virtualization extensions

2022-12-29T20:41:12+00:00

Now that KVM no longer supports trap-and-emulate (see commit 45c7e8af4a5e "MIPS: Remove KVM_TE support"), hardcode the MIPS callbacks to the virtualization callbacks. Harcoding the callbacks eliminates the technically-unnecessary check on non-NULL kvm_mips_callbacks in kvm_arch_init(). MIPS has never supported multiple in-tree modules, i.e. barring an out-of-tree module, where copying and renaming kvm.ko counts as "out-of-tree", KVM could never encounter a non-NULL set of callbacks during module init. The callback check is also subtly broken, as it is not thread safe, i.e. if there were multiple modules, loading both concurrently would create a race between checking and setting kvm_mips_callbacks. Given that out-of-tree shenanigans are not the kernel's responsibility, hardcode the callbacks to simplify the code. Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20221130230934.1014142-22-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: Drop arch hardware (un)setup hooks

2022-12-29T20:40:54+00:00

Drop kvm_arch_hardware_setup() and kvm_arch_hardware_unsetup() now that all implementations are nops. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Eric Farman # s390 Acked-by: Anup Patel Message-Id: <20221130230934.1014142-10-seanjc@google.com> Signed-off-by: Paolo Bonzini

MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init()

2022-12-12T02:12:11+00:00

Patch series "mm/sparse-vmemmap: Generalise helpers and enable for LoongArch", v14. This series is in order to enable sparse-vmemmap for LoongArch. But LoongArch cannot use generic helpers directly because MIPS&LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating page tables. So we adjust the prototypes of p?d_init() to make generic helpers can call them, then enable sparse-vmemmap with generic helpers, and to be further, generalise vmemmap_populate_hugepages() for ARM64, X86 and LoongArch. This patch (of 4): We are preparing to add sparse vmemmap support to LoongArch. MIPS and LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating page tables, so adjust their prototypes to make generic helpers can call them. NIOS2 declares pmd_init() but doesn't use, just remove it to avoid build errors. Link: https://lkml.kernel.org/r/20221027125253.3458989-1-chenhuacai@loongson.cn Link: https://lkml.kernel.org/r/20221027125253.3458989-2-chenhuacai@loongson.cn Signed-off-by: Feiyang Chen Signed-off-by: Huacai Chen Reviewed-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Arnd Bergmann Cc: Andy Lutomirski Cc: Catalin Marinas Cc: Dave Hansen Cc: Dinh Nguyen Cc: Guo Ren Cc: Peter Zijlstra Cc: Thomas Bogendoerfer Cc: Will Deacon Cc: Xuefeng Li Cc: Xuerui Wang Cc: Min Zhou Cc: Muchun Song Signed-off-by: Andrew Morton