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From: Ingo Molnar <mingo@kernel.org>
To: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Len Brown <len.brown@intel.com>,
	Dimitri Sivanich <sivanich@sgi.com>, Russ Anderson <rja@sgi.com>,
	John Estabrook <estabrook@sgi.com>,
	Andrew Banman <abanman@sgi.com>, Nathan Zimmer <nzimmer@sgi.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/21] X86_64, UV: Disable Obsolete APIC ID fixup code used only on UV1
Date: Tue, 3 May 2016 09:35:12 +0200	[thread overview]
Message-ID: <20160503073512.GA13474@gmail.com> (raw)
In-Reply-To: <20160429215403.767900970@asylum.americas.sgi.com>


* Mike Travis <travis@sgi.com> wrote:

> +config X86_UV1_SUPPORTED
> +	bool "SGI Ultraviolet Series 1 Supported"
> +	depends on X86_UV

So I still think it's much simpler if we simply eliminate this Kconfig 
complication and have it all compatible. AFAICS the runtime impact on newer 
systems comes down mostly to a single unlikely branch:

>  static unsigned int x2apic_get_apic_id(unsigned long x)
>  {
> -	unsigned int id;
> +	if (likely(!uv1_apic_driver))
> +		return x;

Thanks,

	Ingo

  reply	other threads:[~2016-05-03  7:35 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-29 21:54 [PATCH 00/21] X86_64, UV: Update kernel for SGI UV4 support Mike Travis
2016-04-29 21:54 ` [PATCH 01/21] X86_64, UV: Add Initial UV4 definitions Mike Travis
2016-05-04  7:15   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 02/21] X86_64, UV: Add UV Architecture Defines Mike Travis
2016-05-04  7:15   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 03/21] X86_64, UV: Add UV4 Specific Defines Mike Travis
2016-05-04  7:16   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 04/21] X86_64, UV: Add UV MMR Illegal Access Function Mike Travis
2016-05-04  7:16   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 05/21] X86_64, UV: Prep for UV4 MMR updates Mike Travis
2016-05-04  7:16   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 06/21] X86_64, UV: Add UV4 Specific MMR definitions Mike Travis
2016-05-04  7:17   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 07/21] X86_64, UV: Disable Obsolete APIC ID fixup code used only on UV1 Mike Travis
2016-05-03  7:35   ` Ingo Molnar [this message]
2016-05-03 14:43     ` Mike Travis
2016-04-29 21:54 ` [PATCH 08/21] X86_64, UV: Clean up redunduncies after merge of UV4 MMR definitions Mike Travis
2016-05-04  7:17   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 09/21] X86_64, UV: Update MMIOH setup function to work for both UV3 and UV4 Mike Travis
2016-05-04  7:18   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 10/21] X86_64, UV: Create per cpu info structs to replace per hub info structs Mike Travis
2016-05-04  7:18   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 11/21] X86_64, UV: Move scir info to the per cpu info struct Mike Travis
2016-05-04  7:18   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 12/21] X86_64, UV: Move blade local processor ID " Mike Travis
2016-05-04  7:19   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 13/21] X86_64, UV: Allocate common per node hub info structs on local node Mike Travis
2016-05-04  7:19   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 14/21] X86_64, UV: Fold blade info into per node hub info structs Mike Travis
2016-05-04  7:19   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 15/21] X86_64, UV: Add UV4 addressing discovery function Mike Travis
2016-05-04  7:20   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 16/21] X86_64, UV: Add obtaining GAM Range Table from UV BIOS Mike Travis
2016-05-04  7:20   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 17/21] X86_64, UV: Support UV4 socket address changes Mike Travis
2016-05-04  7:21   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 18/21] X86_64, UV: Build GAM reference tables Mike Travis
2016-05-04  7:21   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 19/21] X86_64, UV: Update physical address conversions for UV4 Mike Travis
2016-05-04  7:21   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Mike Travis
2016-04-29 21:54 ` [PATCH 20/21] X86_64, UV: Remove Obsolete GRU MMR address translation Mike Travis
2016-05-04  7:22   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Dimitri Sivanich
2016-04-29 21:54 ` [PATCH 21/21] X86_64, UV: Fix incorrect nodes and pnodes for cpuless and memoryless nodes Mike Travis
2016-05-04  7:22   ` [tip:x86/platform] x86/platform/UV: " tip-bot for Dimitri Sivanich

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