Re: [PATCH v2 05/13] perf: Force architectures to opt-in to guest callbacks
From: Sean Christopherson <seanjc@google.com>
Date: 2021-09-16 22:30:53
Also in:
kvm, kvmarm, linux-perf-users, linux-riscv, lkml, xen-devel
On Sat, Aug 28, 2021, Peter Zijlstra wrote:
On Fri, Aug 27, 2021 at 05:35:50PM -0700, Sean Christopherson wrote:quoted
diff --git a/init/Kconfig b/init/Kconfig index 55f9f7738ebb..9ef51ae53977 100644 --- a/init/Kconfig +++ b/init/Kconfig@@ -1776,6 +1776,9 @@ config HAVE_PERF_EVENTS help See tools/perf/design.txt for details. +config HAVE_GUEST_PERF_EVENTS + booldepends on HAVE_KVM ?
Ah, nice! We can go even further to: depends on HAVE_PERF_EVENTS && HAVE_KVM though I'm pretty sure all architectures that select HAVE_KVM also select HAVE_PERF_EVENTS. Huh. arm64 doesn't select HAVE_KVM even though it selects almost literally every other HAVE_KVM_* config. arm64 has some other weirdness with CONFIG_KVM, I'll add a patch or two to fix that stuff and amend this patch as above. Thanks again! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel