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[34.140.115.198]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48557c6ece3sm18109795e9.29.2026.03.13.04.07.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Mar 2026 04:07:39 -0700 (PDT) Date: Fri, 13 Mar 2026 11:07:35 +0000 From: Vincent Donnefort To: Arnd Bergmann Cc: Marc Zyngier , Oliver Upton , Arnd Bergmann , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] KVM: arm64: avoid unused-variable warning Message-ID: References: <20260313094925.3749287-1-arnd@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260313094925.3749287-1-arnd@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260313_040743_169554_F4382CDC X-CRM114-Status: GOOD ( 20.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 13, 2026 at 10:49:16AM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann > > The 'cpu' variable is only used inside of an #ifdef block and causes > a warning if there is no user: > > arch/arm64/kvm/hyp_trace.c: In function 'kvm_hyp_trace_init': > arch/arm64/kvm/hyp_trace.c:422:13: error: unused variable 'cpu' [-Werror=unused-variable] > 422 | int cpu; > | ^~~ > > Change the #ifdef to an equivalent IS_ENABLED() check to avoid > the warning. > > Fixes: b22888917fa4 ("KVM: arm64: Sync boot clock with the nVHE/pKVM hyp") > Signed-off-by: Arnd Bergmann > --- > arch/arm64/kvm/hyp_trace.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/kvm/hyp_trace.c b/arch/arm64/kvm/hyp_trace.c > index c1e28f6581ab..8b7f2bf2fba8 100644 > --- a/arch/arm64/kvm/hyp_trace.c > +++ b/arch/arm64/kvm/hyp_trace.c > @@ -424,17 +424,16 @@ int __init kvm_hyp_trace_init(void) > if (is_kernel_in_hyp_mode()) > return 0; > > -#ifdef CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND > for_each_possible_cpu(cpu) { > const struct arch_timer_erratum_workaround *wa = > per_cpu(timer_unstable_counter_workaround, cpu); > > - if (wa && wa->read_cntvct_el0) { > + if (IS_ENABLED(CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND) && > + wa && wa->read_cntvct_el0) { > pr_warn("hyp trace can't handle CNTVCT workaround '%s'\n", wa->desc); > return -EOPNOTSUPP; > } > } > -#endif > > hyp_trace_init_events(); Reviewed-by: Vincent Donnefort > > -- > 2.39.5 >