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Sun, 04 Oct 2026 20:47:56 -0700 (PDT) From: "Ritesh Harjani (IBM)" To: kvm@vger.kernel.org, Sean Christopherson Cc: Paolo Bonzini , linuxppc-dev@lists.ozlabs.org, Michael Ellerman , Christophe Leroy , Anushree Mathur , Venkat Rao Bagalkote , Harsh Prateek Bora , Madhavan Srinivasan , Shrikanth Hegde , linux-kernel@vger.kernel.org, "Ritesh Harjani (IBM)" Subject: [PATCH v6 3/5] KVM: PPC: selftests: Add helper for checking if running nested Date: Mon, 5 Oct 2026 09:17:26 +0530 Message-Id: <2f57ae5266c12f34cb12d68c65abb643d2065ef4.1791014924.git.ritesh.list@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit access_tracking_perf_test needs detection if we are running nested guests. This adds the needed helper. Tested-by: Anushree Mathur Signed-off-by: Ritesh Harjani (IBM) --- 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 +#include + #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