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KVM: arm64: Add trace reset to the nVHE/pKVM hyp

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Make the hypervisor reset either the whole tracing buffer or a specific
ring-buffer, on remotes/hypervisor/trace or per_cpu/<cpu>/trace write
access.

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Link: https://patch.msgid.link/20260309162516.2623589-27-vdonnefort@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Vincent Donnefort
2026-03-09 16:25:12 +00:00
committed by Marc Zyngier
parent b22888917f
commit 2194d317e0
5 changed files with 29 additions and 1 deletions
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2
arch/arm64/kvm/hyp_trace.c
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@@ -313,7 +313,7 @@ static int hyp_trace_swap_reader_page(unsigned int cpu, void *priv)
static int hyp_trace_reset(unsigned int cpu, void *priv)
{
return 0;
return kvm_call_hyp_nvhe(__tracing_reset, cpu);
}
static int hyp_trace_enable_event(unsigned short id, bool enable, void *priv)