perf/x86/intel: Make @data a mandatory param for intel_guest_get_msrs()

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Drop "support" for passing a NULL @data/@kvm_pmu param when getting guest
MSRs.  KVM, the only in-tree user, unconditionally passes a non-NULL
pointer, and carrying code that suggests @data may be NULL is confusing,
e.g. incorrectly implies that there are scenarios where KVM doesn't pass
a PMU context.

Fixes: 8183a538cd ("KVM: x86/pmu: Add IA32_DS_AREA MSR emulation to support guest DS")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://patch.msgid.link/20260921191418.950933-5-seanjc@google.com

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Sean Christopherson 2026-09-21 12:14:12 -07:00 • committed by Ingo Molnar

parent d06260e99e

commit a391618e1d

1 changed files with 4 additions and 4 deletions

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arch/x86/events/intel/core.c

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