From patchwork Tue Jun 18 03:51:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Pandruvada X-Patchwork-Id: 13701762 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 563594EB37; Tue, 18 Jun 2024 03:51:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718682690; cv=none; b=Wn9AHi2FpJk/Wqsp+Ma6rFiVKaRZdelB224RIebA7rqf6jcvhWasR+ixvoC4V5VsvtWNvx7GY1nukZL77OPxFZFlVavSKQ+S1k5XPEGSJ4Ql7x4S8O9akpoR23cvVhqGW+jVhbAfiwvI7xSTlV1VUp0w1US8s0eJ5ucd+p5wTks= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718682690; c=relaxed/simple; bh=3tTbkVgdJaRODlProAcTfPKU/QGbmkxNQAPgShfrGEE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=koIHGOalyaZqfrZuREIzDmsFsOXDPARzQIo4PuhK1S7DtjNKvdNqJZlvGKbJfcNnAbCusfw2v0OplFLkc66AXrskkAoisNls5Hgv/nnirFWrl0TlH05kXnJ3GpFowXHmPQgfa2+FdEZWSYj5iVwMQiEfCXgBRfijmVXDtGxftOs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=SFGFHc/t; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="SFGFHc/t" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1718682688; x=1750218688; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3tTbkVgdJaRODlProAcTfPKU/QGbmkxNQAPgShfrGEE=; b=SFGFHc/ta3lmv4VkAzqjxUpRT7xRQf51m7ueB/rKEoQrt3Oq4ZxlUH44 2ewKsg5SETAkau+ajXvdp795C9JXJ9/3/UCS66sBisaY4U4cDeCWOyxgb zeL0eQhl2aXLAMU48ye9ZWDi4GxWivIQ1tTlV+UAlup/B9W5YDnLy5ux+ 2VjWPHSVz6IasAVAQMJIgs22sPCZT40XW1Czpf8c/4RreDmV9zlzt4wJM m/SsmX4jq+g/XivQ1LWJEqqQ+APqeLE/nxjbn3dpNq61d5Q22pW7Mo36w LOzRqSa3FzTq+4DminetqSr6cI7fnihUF4GvDENa+yOKaDbQ+w24ZV0Oz Q==; X-CSE-ConnectionGUID: XTVkQtIMR1uvqD1gnhwQLw== X-CSE-MsgGUID: uGL3B47SQ56Tu9jy3tMKGw== X-IronPort-AV: E=McAfee;i="6700,10204,11106"; a="18449838" X-IronPort-AV: E=Sophos;i="6.08,246,1712646000"; d="scan'208";a="18449838" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2024 20:51:24 -0700 X-CSE-ConnectionGUID: 4bkENZLMT7WlFqRj6k++iw== X-CSE-MsgGUID: SKhoJPOqS9y+C2Fw1HYbUg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,246,1712646000"; d="scan'208";a="41522552" Received: from spandruv-desk.jf.intel.com ([10.54.75.19]) by orviesa009.jf.intel.com with ESMTP; 17 Jun 2024 20:51:24 -0700 From: Srinivas Pandruvada To: rafael@kernel.org, viresh.kumar@linaro.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, Srinivas Pandruvada Subject: [PATCH 1/2] x86/cpufeatures: Add HWP highest perf change feature flag Date: Mon, 17 Jun 2024 20:51:20 -0700 Message-ID: <20240618035122.438822-2-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240618035122.438822-1-srinivas.pandruvada@linux.intel.com> References: <20240618035122.438822-1-srinivas.pandruvada@linux.intel.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 When CPUID[6].EAX[15] is set to 1, this CPU supports notification for HWP (Hardware P-states) highest performance change. Add a feature flag to check if the CPU supports HWP highest performance change. Signed-off-by: Srinivas Pandruvada --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 3c7434329661..4674ba5310b2 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -361,6 +361,7 @@ #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ +#define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* HWP Highest perf change */ #define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */ /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */