From: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
To: kvm@vger.kernel.org, Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
linuxppc-dev@lists.ozlabs.org,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <chleroy@kernel.org>,
Anushree Mathur <anushree.mathur@linux.ibm.com>,
Venkat Rao Bagalkote <venkat88@linux.ibm.com>,
Harsh Prateek Bora <harshpb@linux.ibm.com>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
linux-kernel@vger.kernel.org,
"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Subject: [PATCH v6 3/5] KVM: PPC: selftests: Add helper for checking if running nested
Date: Mon, 5 Oct 2026 09:17:26 +0530 [thread overview]
Message-ID: <2f57ae5266c12f34cb12d68c65abb643d2065ef4.1791014924.git.ritesh.list@gmail.com> (raw)
In-Reply-To: <cover.1791014923.git.ritesh.list@gmail.com>
access_tracking_perf_test needs detection if we are running nested guests.
This adds the needed helper.
Tested-by: Anushree Mathur <anushree.mathur@linux.ibm.com>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
---
tools/testing/selftests/kvm/include/powerpc/processor.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/powerpc/processor.h b/tools/testing/selftests/kvm/include/powerpc/processor.h
index f0ee21a8e2d4..a46f6828991c 100644
--- a/tools/testing/selftests/kvm/include/powerpc/processor.h
+++ b/tools/testing/selftests/kvm/include/powerpc/processor.h
@@ -6,6 +6,8 @@
#define SELFTEST_KVM_PROCESSOR_H
#include <linux/compiler.h>
+#include <unistd.h>
+
#include "ppc_asm.h"
#include "kvm_util_types.h"
@@ -36,4 +38,9 @@ static inline void cpu_relax(void)
asm volatile("" ::: "memory");
}
+static inline bool is_pseries_lpar(void)
+{
+ return !access("/proc/device-tree/rtas/ibm,hypertas-functions", F_OK);
+}
+
#endif
--
2.39.5
next prev parent reply other threads:[~2026-10-05 3:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-05 3:47 [PATCH v6 0/5] KVM: selftests: add powerpc support Ritesh Harjani (IBM)
2026-10-05 3:47 ` [PATCH v6 1/5] KVM: PPC: selftests: add support for powerpc Ritesh Harjani (IBM)
2026-10-05 3:47 ` [PATCH v6 2/5] KVM: selftests: Move memslot_perf_test off the 256M ELF load address Ritesh Harjani (IBM)
2026-10-05 3:47 ` Ritesh Harjani (IBM) [this message]
2026-10-05 3:47 ` [PATCH v6 4/5] KVM: PPC: selftests: Skip idle-page check when running nested on pseries LPAR Ritesh Harjani (IBM)
2026-10-05 3:47 ` [PATCH v6 5/5] KVM: selftests: Don't limit LE dirty-bitmap bitops to s390x Ritesh Harjani (IBM)
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