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x86/fpu: Preparatory cleanups for AMX support (part 1)
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[V2,00/30] x86/fpu: Preparatory cleanups for AMX support (part 1)
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[V2,01/30] x86/fpu: Remove pointless argument from switch_fpu_finish()
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[V2,02/30] x86/fpu: Update stale comments
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[V2,03/30] x86/pkru: Remove useless include
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[V2,04/30] x86/fpu: Restrict xsaves()/xrstors() to independent states
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[V2,05/30] x86/fpu: Cleanup the on_boot_cpu clutter
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[V2,06/30] x86/fpu: Remove pointless memset in fpu_clone()
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[V2,07/30] x86/process: Clone FPU in copy_thread()
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[V2,08/30] x86/fpu: Do not inherit FPU context for kernel and IO worker threads
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[V2,09/30] x86/fpu: Cleanup xstate xcomp_bv initialization
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[V2,10/30] x86/fpu/xstate: Provide and use for_each_xfeature()
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[V2,11/30] x86/fpu/xstate: Mark all init only functions __init
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[V2,12/30] x86/fpu: Move KVMs FPU swapping to FPU core
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[V2,13/30] x86/fpu: Replace KVMs home brewed FPU copy from user
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[V2,14/30] x86/fpu: Rework copy_xstate_to_uabi_buf()
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[V2,15/30] x86/fpu: Replace KVMs home brewed FPU copy to user
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[V2,16/30] x86/fpu: Mark fpu__init_prepare_fx_sw_frame() as __init
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[V2,17/30] x86/fpu: Move context switch and exit to user inlines into sched.h
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[V2,18/30] x86/fpu: Clean up cpu feature tests
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[V2,19/30] x86/fpu: Make os_xrstor_booting() private
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[V2,20/30] x86/fpu: Move os_xsave() and os_xrstor() to core
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[V2,21/30] x86/fpu: Move legacy ASM wrappers to core
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[V2,22/30] x86/fpu: Make WARN_ON_FPU() private
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[V2,23/30] x86/fpu: Move fpregs_restore_userregs() to core
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[V2,24/30] x86/fpu: Move mxcsr related code to core
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[V2,25/30] x86/fpu: Move fpstate functions to api.h
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[V2,26/30] x86/fpu: Remove internal.h dependency from fpu/signal.h
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[V2,27/30] x86/sev: Include fpu/xcr.h
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[V2,28/30] x86/fpu: Mop up the internal.h leftovers
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[V2,29/30] x86/fpu: Replace the includes of fpu/internal.h
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[V2,30/30] x86/fpu: Provide a proper function for ex_handler_fprestore()
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This is the rework of the V1 part-1 series of the effort to support the new AMX feature: https://lore.kernel.org/r/20211011215813.558681373@linutronix.de This part cleans up existing mess. Historical leftovers, shortcomings and especially the universal kitchen sink asm/fpu/internal.h which is included all over the place for the wrong reasons. This series has a value independent of AMX, but allows to make the integration and conversion to the new world order of dynamically enabled feature bits simpler. The serries is based on: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/fpu and also available from git: git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu-1 The full series which has the full AMX support included can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu Changes vs. V1: - Fixed the issue in the !XSAVE code path of the kvm UABI copy function - Paolo - Renamed the KVM functions - Boris, Paolo, Sean - Fixed the comments and changelog issues - Boris Thanks, tglx --- arch/x86/events/perf_event.h | 1 arch/x86/ia32/ia32_signal.c | 1 arch/x86/include/asm/fpu/api.h | 31 ++ arch/x86/include/asm/fpu/internal.h | 530 ------------------------------------ arch/x86/include/asm/fpu/signal.h | 13 arch/x86/include/asm/fpu/xcr.h | 11 arch/x86/include/asm/fpu/xstate.h | 6 arch/x86/include/asm/pkru.h | 2 arch/x86/kernel/cpu/bugs.c | 2 arch/x86/kernel/cpu/common.c | 2 arch/x86/kernel/fpu/bugs.c | 2 arch/x86/kernel/fpu/core.c | 161 ++++++++-- arch/x86/kernel/fpu/init.c | 29 - arch/x86/kernel/fpu/regset.c | 6 arch/x86/kernel/fpu/signal.c | 21 - arch/x86/kernel/fpu/xstate.c | 172 ++++++----- arch/x86/kernel/process.c | 6 arch/x86/kernel/process_32.c | 5 arch/x86/kernel/process_64.c | 5 arch/x86/kernel/ptrace.c | 1 arch/x86/kernel/sev.c | 2 arch/x86/kernel/signal.c | 1 arch/x86/kernel/smpboot.c | 2 arch/x86/kernel/traps.c | 2 arch/x86/kvm/svm/sev.c | 2 arch/x86/kvm/vmx/vmx.c | 2 arch/x86/kvm/x86.c | 192 +------------ arch/x86/math-emu/fpu_entry.c | 2 arch/x86/mm/extable.c | 4 arch/x86/power/cpu.c | 2 b/arch/x86/include/asm/fpu/sched.h | 68 ++++ b/arch/x86/kernel/fpu/context.h | 85 +++++ b/arch/x86/kernel/fpu/internal.h | 30 ++ b/arch/x86/kernel/fpu/legacy.h | 115 +++++++ b/arch/x86/kernel/fpu/xstate.h | 198 +++++++++++++ 35 files changed, 824 insertions(+), 890 deletions(-)