From nobody Tue Dec 16 16:38:55 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7AF271EFFB0 for ; Mon, 21 Apr 2025 18:53:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745261595; cv=none; b=qguKhFauVpu1veLUdPPNjgyoUxiv5O2bM/w1U3iWSnp+W8UNZ7hUp8ND+YLwl1YX71lGTqu9bfqZewytSKKarG9MnGnCsmnCEdjVsknjaV+08dH66cegCvmLWc8s8F47wLuo+CcL6IbBvJle0S/FLsq1CPkBYuh2/TFcNx9gZc4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745261595; c=relaxed/simple; bh=Zba+SDZBntbSqtZLY0JNtOwiAkFgLj0N+rqExNZHhg0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=moLqu0xRhhU48pSnQuBHQYdPOBww2+fT59KMXAbLLJpGbza7X7CGMpr7Ao4vTGxqkdRKbjjI9VDdR95Cz+I4pJUyE9bsuhiFW5eSGkj/CIJS/Kn/euzKCsq9yvPnQVr3BSlnY9gJY5lubdonHqAj1XqtF7DUIxAa49cV9moKEco= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MJcHPLUH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MJcHPLUH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 811DCC4CEE4; Mon, 21 Apr 2025 18:53:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745261594; bh=Zba+SDZBntbSqtZLY0JNtOwiAkFgLj0N+rqExNZHhg0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MJcHPLUHCNOgqlUNVbFH2nyvfMx1B6jEU2A3kdWV4m6vggMvghO+B4Q+hepfgHmNv eAlBcXp9ZDPcfYBPLH7Mt8DI91EXry3oMfZYheFzqrConqTmOIiSt2z9SxQnOV9MbZ VSCkiTcmMsOn4vgcOsERsUPoSLPCkZogAYAXWTtvJzUJHPx/KnJv3XPwlGnhKysB5O BkhNcRmdnE80VTKQ11haRV0oIZRGTAs6KvT0tRZw86nPG5bM9e7hA2xbkZSuFUkpAt FCLiNzH5bZCvcWmprZcFe+iWpHgTukEDPn3UWFjDzGfkM3HW1WkZCFMRcq1u4LBFLW XyB/b6f1umAMw== From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Andy Shevchenko , Arnd Bergmann , Borislav Petkov , Juergen Gross , "H . Peter Anvin" , Kees Cook , Linus Torvalds , Mike Rapoport , Paul Menzel , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , David Woodhouse Subject: [PATCH 09/29] x86/boot/e820: Call the PCI gap a 'gap' in the boot log printout Date: Mon, 21 Apr 2025 20:51:49 +0200 Message-ID: <20250421185210.3372306-10-mingo@kernel.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250421185210.3372306-1-mingo@kernel.org> References: <20250421185210.3372306-1-mingo@kernel.org> 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" It is a bit weird and inconsistent that the PCI gap is advertised during bootup as 'mem'ory: [mem 0xc0000000-0xfed1bfff] available for PCI devices ^^^ It's not really memory, it's a gap that PCI devices can decode and use and they often do not map it to any memory themselves. So advertise it for what it is, a gap: [gap 0xc0000000-0xfed1bfff] available for PCI devices Signed-off-by: Ingo Molnar Cc: Andy Shevchenko Cc: Arnd Bergmann Cc: David Woodhouse Cc: H. Peter Anvin Cc: Kees Cook Cc: Linus Torvalds Cc: Mike Rapoport (Microsoft) --- arch/x86/kernel/e820.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 99f997ae88dc..3eab0908ca71 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -741,7 +741,7 @@ __init void e820__setup_pci_gap(void) */ pci_mem_start =3D gapstart; =20 - pr_info("[mem %#010lx-%#010lx] available for PCI devices\n", + pr_info("[gap %#010lx-%#010lx] available for PCI devices\n", gapstart, gapstart + gapsize - 1); } =20 --=20 2.45.2