From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 08F8D3BA24F for ; Fri, 29 May 2026 15:07:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780067222; cv=none; b=oxkGH2Z5MOyGDXaAX7bQapS0uRzNC4uBOADvgweFP86KtEp64h2dQmdsQd7tkq93lVBfYF5O73ISEH79bKbP61O/asxcyfv1x8wVI71R+BZtBPmAILmxbu7nvMMlfDbaWmjXmPiyyf0pOju3JgcJAk4Jtw/J4jOB3ptCl3qGg5Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780067222; c=relaxed/simple; bh=HD6T6IXKxXHYYTEzA8sYaRKBtXpTOgGbEYUT2q1t41U=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=UahTwvHEidf/OCvZ0g73dM8veC9FnleVOA33+O9WWg63LJyFIlAT/HNT+fhXnfDr4qEBb6szR0DVBmVQx3ZrKO4dazAQstTxj7wdl6tFbb1qWqGBl6hVD0FvBPrzuEScclnXuL+1Jc6Nkzo/cVMDxCLiinsgeJDihO477Dzc7p4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=wU0WFI/t; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="wU0WFI/t" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-82f6b984b3aso6341006b3a.3 for ; Fri, 29 May 2026 08:07:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1780067220; x=1780672020; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=xaVkfsA2sOgFELwC+9kgheEWN7jnZ1tVtkSLe6gYY/I=; b=wU0WFI/ted6me3MJ5gIXzdQFVu51Y8j6PFxCGB5kO2v3sWySjoI3037eGhxTwdTr1T TfyJwA4EV9ZLssm//dm7UhCJ3ciE5Uc3kgx1fW2UHmPsp+H11No6C5KNSkdAzhvu6h0j FjtvTqk5eGQroVpJy1ss1pyIi79UZ4Wcbxrpwx2+M0DQwvROfHC2E5cc8G5109y6Uc3/ 9PxBHmWGBWJPcHE5JANy/uvXEMDYKFTyJ4/pWbQCuI5c7D0qsH7d7XppDVq4+w3h8Xeh CTXs2g2lzNWXXIQ5DgeiDJbjN9HZzPxX3TlM+XlnTaSCs/jlD1tMngVnZWijQ1W3mvVB FOVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780067220; x=1780672020; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=xaVkfsA2sOgFELwC+9kgheEWN7jnZ1tVtkSLe6gYY/I=; b=dOi0ja71Qaww2/uvFDJctMYddLHWr5YNVwUgux7LJRaYJuQh95Gwgd9vvCDL++iaOD fH78N0dTXGl8lZo0p/DyGXiJvz07sJrsxEAoywxI2Kv+xSd4trF8OilxOP3CIEQLnUv+ 8oB/arBNUIBoUUBoPzZHC9kTqkFwWB+OZEGOg1rOKDKq9lurUOG66beaZiQO2NdRPZ3l oHWhCf8syeiwcL2rWipyoissad0CiGDR4fa6EKE3N9SQU4LR9BqT9iTxNsHcwMprZSPV ffVnioIWFIKXGgnlrcnLZbSRMjMurYZpT4etQVSL4KEdFng1OmLZF/McIkqoWK9D/0iU kVHw== X-Forwarded-Encrypted: i=1; AFNElJ+wViTFSw5EQ5CYUsU0Oc6cMX9Z04EbnINPu2KzIklWLmJFhaSuoKQlU6uZ+C7HSPJ+uryukrW7WD28@lists.linux.dev X-Gm-Message-State: AOJu0YzoQs9UUBYXAVMQ0fd96Ir8g9t7GKkGEE/YyOYurtEcnhOO84OX kCmQ6TmuB84fAHXfnIgHOGnmJ2KmjrMa18l2xuTI5CYkzI2T4fklCOdBRFMFO+ACZEZoRQogCfY Wt6SwmA== X-Received: from pfkk14.prod.google.com ([2002:aa7:90ce:0:b0:82f:6245:a6ec]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:8088:b0:838:c01a:7a50 with SMTP id d2e1a72fcca58-84212ce8ccamr3369227b3a.30.1780067219938; Fri, 29 May 2026 08:06:59 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 29 May 2026 08:06:31 -0700 In-Reply-To: <20260529144435.704127-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260529144435.704127-1-seanjc@google.com> X-Mailer: git-send-email 2.54.0.823.g6e5bcc1fc9-goog Message-ID: <20260529150631.713818-1-seanjc@google.com> Subject: [PATCH v4 27/47] x86/paravirt: Remove unnecessary PARAVIRT=n stub for paravirt_set_sched_clock() From: Sean Christopherson To: Paolo Bonzini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Kiryl Shutsemau , Sean Christopherson , "K . Y . Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Ajay Kaher , Alexey Makhalov , Jan Kiszka , Andy Lutomirski , Peter Zijlstra , Juergen Gross , Daniel Lezcano , John Stultz Cc: "H . Peter Anvin" , Rick Edgecombe , Vitaly Kuznetsov , Broadcom internal kernel review list , Boris Ostrovsky , Stephen Boyd , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, David Woodhouse , Tom Lendacky , Nikunj A Dadhania , David Woodhouse , Michael Kelley , Thomas Gleixner Content-Type: text/plain; charset="UTF-8" Remove the unnecessary paravirt_set_sched_clock() stub for PARAVIRT=n, as all callers are gated by PARAVIRT=y. Eliminating the stub will avoid a pile of pointless churn as the "real" implementation evolves. No functional change intended. Fixes: 39965afb1151 ("x86/paravirt: Move paravirt_sched_clock() related code into tsc.c") Reviewed-by: David Woodhouse Signed-off-by: Sean Christopherson --- arch/x86/include/asm/timer.h | 3 +++ arch/x86/kernel/tsc.c | 1 - 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/timer.h b/arch/x86/include/asm/timer.h index fda18bcb19b4..c71b466d6ace 100644 --- a/arch/x86/include/asm/timer.h +++ b/arch/x86/include/asm/timer.h @@ -12,7 +12,10 @@ extern void recalibrate_cpu_khz(void); extern int no_timer_check; extern bool using_native_sched_clock(void); + +#ifdef CONFIG_PARAVIRT void paravirt_set_sched_clock(u64 (*func)(void)); +#endif /* * We use the full linear equation: f(x) = a + b*x, in order to allow diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index bdff8c988866..888bd1cbd9bc 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -288,7 +288,6 @@ void paravirt_set_sched_clock(u64 (*func)(void)) u64 sched_clock_noinstr(void) __attribute__((alias("native_sched_clock"))); bool using_native_sched_clock(void) { return true; } -void paravirt_set_sched_clock(u64 (*func)(void)) { } #endif notrace u64 sched_clock(void) -- 2.54.0.823.g6e5bcc1fc9-goog