From nobody Sun Nov 24 22:33:36 2024 Received: from mail-qt1-f173.google.com (mail-qt1-f173.google.com [209.85.160.173]) (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 55EA81A4F2D for ; Fri, 1 Nov 2024 13:47:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730468843; cv=none; b=NPlBtiGlSdsElCR0CxY3HLjW/sMhKoS83ZJvJ4ZW36r5qCUL46ZF0CKlSPZyYEt1dnyWeydudB6AicfBPSgSma0DzxFWBqFkbBLPXSZzxNmV9QobapQtmO7e2AB8O8T59oAOTaExBdUQ6P9eCKqyeWHzCqa08x5bCJYWt8M1TcQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730468843; c=relaxed/simple; bh=w/E90TDRcavpiLD6UuAlqK6J3Z+bDO28CswOLV8SvO4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W4ZJy3xfltZa2/UJWkDw9dQhEh9yKkW55Y6b9BM2TOUF2Q0qLAStnpbOPAIkea7yTPO2PNcvsv9dq9NGgtD4VoCfvYVL7lwyfSJUCM936UVx8odETceJ4k05wCBaeSqlxO4TPH6SeoCMeSU15kPDRSUCRzd35aic0+k7OpRgZ8s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net; spf=pass smtp.mailfrom=gourry.net; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b=lQF5mFq+; arc=none smtp.client-ip=209.85.160.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gourry.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b="lQF5mFq+" Received: by mail-qt1-f173.google.com with SMTP id d75a77b69052e-4613162181dso12460561cf.3 for ; Fri, 01 Nov 2024 06:47:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gourry.net; s=google; t=1730468840; x=1731073640; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y+zdKugU7xiryBghEkTtjHu3m1t20HIVG0keEZ55skE=; b=lQF5mFq+8i6gXEumXeFamDXeFhH+8jUdL4ewTWNI3J5bSG7CC0UWTCmxSmbtcRBxom 16yoSe4ScQeZI+60P1gTQw799L3nRcF64Wjcsy5+COKycAYcr0Za4RVvIRgNTaMitXM/ DEBlRmrMMKX+X831rjZEW7/57B8sHXIGDPzPZsSUsyxCJ2qTTFpOoql3mZkJ/B/REXb2 eNhwrTM/0YXgv9xi1+utA+5jIghu6t6CrqIghaO0P/cDtQE9UzQh9BsBEqtW72T1P+X3 bp2TPU2EfUYBwv8ZEyEPGeLGlemC7YEGoZVG31vBV3TQcs2zalzO+6AyJdQsfIXSMYb8 +Xqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730468840; x=1731073640; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y+zdKugU7xiryBghEkTtjHu3m1t20HIVG0keEZ55skE=; b=bsMdj2p0AMO3xrKIuUbZ/O2cKxGxhx7DbGkVBz0Qd9yL8qMQuzb9AxLUpGBze6YuAK CzxnofmEWiXLgN8RfM7WbNsyp9cl44nLzZcjteucffbSr1xR6kXqteiNZD9HY6NfBVft sJ8H2FrxIwxEbV8tuxEyywbnYMTlmsR7he9FvxaC8Fba4d7kbqo5vwNP6hbokSFDIZ8C iPclgz6w3w00YjOuPg43ggF+Xsr+MjDWTtbNZILsaBSsUqD9wUGdLp+OkVRZhSebgDAj CuWNkpL54MMI0EtjoLkh3NYcs21kDq4MN0fjMi8+rs+pn/JfZ/UXi6EYGrfEtmvse6g0 lgwA== X-Forwarded-Encrypted: i=1; AJvYcCXDzyUIskUAoJZ9RZ05ZndxOeK6jE4q/Cc87MipC6LvejriGGvYdmbzZjXQROVgCLx45e/pSVQJiIftpIQ=@vger.kernel.org X-Gm-Message-State: AOJu0YwOQG7HZ3g1khJB9OGTseSCswVL3uslR4J/8Hp2vMGaxmRpSJww LPZrArwl+Fp9hP5UFmcRVPmX5Wkl2l+KH4Honplm9lObr4dBvp34I8glHMKx6mk= X-Google-Smtp-Source: AGHT+IEqYRg/5UZkjuUahc1kZYI/R3+uQRVmb1D8Hw7IJxtfAawWOive+EatrYV0MOKL9iMFUrnP5A== X-Received: by 2002:ac8:5acc:0:b0:461:15a1:7889 with SMTP id d75a77b69052e-462b8680102mr46144121cf.16.1730468840141; Fri, 01 Nov 2024 06:47:20 -0700 (PDT) Received: from PC2K9PVX.TheFacebook.com ([50.193.156.113]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-462ad0cac07sm18840631cf.48.2024.11.01.06.47.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2024 06:47:19 -0700 (PDT) From: Gregory Price To: x86@kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org Cc: linux-cxl@vger.kernel.org, Jonathan.Cameron@huawei.com, dan.j.williams@intel.com, rrichter@amd.com, Terry.Bowman@amd.com, dave.jiang@intel.com, ira.weiny@intel.com, alison.schofield@intel.com, gourry@gourry.net, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, rafael@kernel.org, lenb@kernel.org, david@redhat.com, osalvador@suse.de, gregkh@linuxfoundation.org, akpm@linux-foundation.org, rppt@kernel.org Subject: [PATCH v5 3/3] acpi,srat: give memory block size advice based on CFMWS alignment Date: Fri, 1 Nov 2024 09:47:05 -0400 Message-ID: <20241101134706.1185-4-gourry@gourry.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241101134706.1185-1-gourry@gourry.net> References: <20241101134706.1185-1-gourry@gourry.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Capacity is stranded when CFMWS regions are not aligned to block size. On x86, block size increases with capacity (2G blocks @ 64G capacity). Use CFMWS base/size to report memory block size alignment advice. Suggested-by: Dan Williams Signed-off-by: Gregory Price Acked-by: David Hildenbrand Acked-by: Mike Rapoport (Microsoft) --- drivers/acpi/numa/srat.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 44f91f2c6c5d..34b6993e7d6c 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -338,13 +339,22 @@ static int __init acpi_parse_cfmws(union acpi_subtabl= e_headers *header, { struct acpi_cedt_cfmws *cfmws; int *fake_pxm =3D arg; - u64 start, end; + u64 start, end, align; int node; =20 cfmws =3D (struct acpi_cedt_cfmws *)header; start =3D cfmws->base_hpa; end =3D cfmws->base_hpa + cfmws->window_size; =20 + /* Align memblock size to CFMW regions if possible */ + align =3D 1UL << __ffs(start | end); + if (align >=3D SZ_256M) { + if (memory_block_advise_max_size(align) < 0) + pr_warn("CFMWS: memblock size advise failed\n"); + } else { + pr_err("CFMWS: [BIOS BUG] base/size alignment violates spec\n"); + } + /* * The SRAT may have already described NUMA details for all, * or a portion of, this CFMWS HPA range. Extend the memblks --=20 2.43.0