KVM: arm64: Add trace remote for the nVHE/pKVM hyp

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In both protected and nVHE mode, the hypervisor is capable of writing
events into tracefs compatible ring-buffers. Create a trace remote so
the kernel can read those buffers.

This currently doesn't provide any event support which will come later.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Link: https://patch.msgid.link/20260309162516.2623589-25-vdonnefort@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Vincent Donnefort 2026-03-09 16:25:10 +00:00 • committed by Marc Zyngier

parent 680a04c333

commit 3aed038aac

5 changed files with 238 additions and 0 deletions

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1

arch/arm64/kvm/Kconfig

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2

arch/arm64/kvm/Makefile

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5

arch/arm64/kvm/arm.c

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219

arch/arm64/kvm/hyp_trace.c

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11

arch/arm64/kvm/hyp_trace.h

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