cbb359d81a
Move the common (or at least "ignored") aspects of resetting the vPMU to common x86 code, along with the stop/release helpers that are no used only by the common pmu.c. There is no need to manually handle fixed counters as all_valid_pmc_idx tracks both fixed and general purpose counters, and resetting the vPMU is far from a hot path, i.e. the extra bit of overhead to the PMC from the index is a non-issue. Zero fixed_ctr_ctrl in common code even though it's Intel specific. Ensuring it's zero doesn't harm AMD/SVM in any way, and stopping the fixed counters via all_valid_pmc_idx, but not clearing the associated control bits, would be odd/confusing. Make the .reset() hook optional as SVM no longer needs vendor specific handling. Cc: stable@vger.kernel.org Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Link: https://lore.kernel.org/r/20231103230541.352265-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
30 lines
911 B
C
30 lines
911 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#if !defined(KVM_X86_PMU_OP) || !defined(KVM_X86_PMU_OP_OPTIONAL)
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BUILD_BUG_ON(1)
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#endif
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/*
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* KVM_X86_PMU_OP() and KVM_X86_PMU_OP_OPTIONAL() are used to help generate
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* both DECLARE/DEFINE_STATIC_CALL() invocations and
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* "static_call_update()" calls.
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*
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* KVM_X86_PMU_OP_OPTIONAL() can be used for those functions that can have
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* a NULL definition, for example if "static_call_cond()" will be used
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* at the call sites.
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*/
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KVM_X86_PMU_OP(hw_event_available)
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KVM_X86_PMU_OP(pmc_idx_to_pmc)
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KVM_X86_PMU_OP(rdpmc_ecx_to_pmc)
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KVM_X86_PMU_OP(msr_idx_to_pmc)
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KVM_X86_PMU_OP(is_valid_rdpmc_ecx)
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KVM_X86_PMU_OP(is_valid_msr)
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KVM_X86_PMU_OP(get_msr)
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KVM_X86_PMU_OP(set_msr)
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KVM_X86_PMU_OP(refresh)
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KVM_X86_PMU_OP(init)
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KVM_X86_PMU_OP_OPTIONAL(reset)
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KVM_X86_PMU_OP_OPTIONAL(deliver_pmi)
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KVM_X86_PMU_OP_OPTIONAL(cleanup)
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#undef KVM_X86_PMU_OP
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#undef KVM_X86_PMU_OP_OPTIONAL
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