linux-kernel - Re: [PATCH V3 1/3] x86/PCI: Fix PCI root numa

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Date:	Thu, 8 May 2014 17:14:02 +0200
From:	Robert Richter <rric@...nel.org>
To:	Suravee Suthikulanit <suravee.suthikulpanit@....com>
Cc:	bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	Borislav Petkov <bp@...e.de>,
	Daniel J Blueman <daniel@...ascale.com>,
	Andreas Herrmann <herrmann.der.user@...glemail.com>,
	Myron Stowe <myron.stowe@...hat.com>
Subject: Re: [PATCH V3 1/3] x86/PCI: Fix PCI root numa_node info on AMD
 family15h

On 08.05.14 09:39:55, Suravee Suthikulanit wrote:
> On 5/8/2014 4:01 AM, Robert Richter wrote:
> >On 08.05.14 10:59:05, Robert Richter wrote:
> >>On 07.05.14 13:58:45, suravee.suthikulpanit@....com wrote:
> >>>@@ -113,10 +122,17 @@ static int __init early_fill_mp_bus_info(void)
> >>>  		info = alloc_pci_root_info(min_bus, max_bus, node, link);
> >>>  	}
> >>>
> >>>+	/*
> >>>+	 * The following code is only supported until Fam11h.
> >>>+	 * Newer processors will depend on ACPI MCFG table instead.
> >>>+	 */
> >>>+	if (boot_cpu_data.x86 > 0x11)
> >>>+		return 0;
> >>>+
> >>>  	/* get the default node and link for left over res */
> >>
> >>As this is the only substantial change of your patch, I would better
> >>drop ther rest or at least split it in two patches. Should this change
> >>also be for stable?
> >
> >Of course adding the hostbridge must be also part of the patch, didn't
> >note this due to the other noise. See why the split would be good?
> >
> >>
> >>-Robert
> 
> 
> Robert,
> 
> I have already added the hostbridge for family15h in this patch.
> 
> +static struct amd_hostbridge hb_probes[] __initdata = {
> +	{ 0, 0x18, 0x1100 }, /* K8 */
> +	{ 0, 0x18, 0x1200 }, /* Family10h */
> +	{ 0xff, 0, 0x1200 }, /* Family10h */
> +	{ 0, 0x18, 0x1300 }, /* Family11h */
> +	{ 0, 0x18, 0x1600 }, /* Family15h */ <--- HERE

Yes, I noticed that, but later, thus my 2nd mail.

>  };
> 
> The rest of the changes are mostly comments, some minor renaming of
> variables for clarity, and replace hardcode values with preprocessor macro.
> If needed, I can split them.

I just would drop it, you just need the fam15h device and the cpu mode
check.

-Robert
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