linux-kernel - Re: Loseing my patience with libata and sata

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Date:	Fri, 14 Feb 2014 10:42:36 -0800
From:	Randy Dunlap <rdunlap@...radead.org>
To:	Gene Heskett <gheskett@...v.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Loseing my patience with libata and sata_nv

On 02/14/2014 08:31 AM, Gene Heskett wrote:
> Which is required for my $290 ASUS M2n-SLI Deluxe motherboard to boot.
> 
> Not finding the option in any kernel tree that exists on my system, 
> except it appears its been replaced or something.
> 
> This once in a lifetime boot, to 3.12.9, shows from an lsmod:
> libata                146855  2 sata_nv,pata_amd
> scsi_mod              153579  4 sr_mod,sg,sd_mod,libata
> 
> I haven't a clue how I got it in this boot, and I built it.  And 
> apparently a make oldconfig, carefully done by hand (takes about an hour
> 30 to do) is not capable of adding it to a .config BECAUSE it does NOT 
> exist in any of the arch/x86/configs/i386_defconfig's present on this machine.

It does not have to exist in any defconfig.  Those are just default config files
and SATA_NV is not enabled by default, but you can still enable it.

> Here is how I searched:
> 
> gene@...ote:~/src/linux-3.0.69$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.0.69$ cd ../linux-3.2.40
> gene@...ote:~/src/linux-3.2.40$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.2.40$ cd ../linux-3.4.36
> gene@...ote:~/src/linux-3.4.36$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.4.36$ cd ../linux-3.8.2
> gene@...ote:~/src/linux-3.8.2$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.8.2$ cd ../linux-3.8.3
> gene@...ote:~/src/linux-3.8.3$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.8.3$ cd ../linux-3.12.0
> gene@...ote:~/src/linux-3.12.0$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.12.0$ cd ../linux-3.12.6
> gene@...ote:~/src/linux-3.12.6$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.12.6$ cd ../linux-3.12.9
> gene@...ote:~/src/linux-3.12.9$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.12.9$ cd ../linux-3.13.1
> gene@...ote:~/src/linux-3.13.1$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.13.1$ cd ../linux-3.13.2
> gene@...ote:~/src/linux-3.13.2$ grep SATA_NV arch/x86/configs/i386_defconfig 
> gene@...ote:~/src/linux-3.13.2$ 
> 
> I've been fighting with this, intermittently for about 6 months.  Except 
> for this 3.12.9 where I must have been holding my mouth right, all the
> rest are boot failures because it can't find the boot drive with so-and-so
> for a UUID. sata_nv is on the missing list, even in this WORKing boots defconfig.
> "Working" however is a miss-statement, no multimedia stuff was built.
> 
> There has to be a rule I am violating, but even with Randy's D's help, it is
> not becoming obvious.  FWIW libata references also can't be found, but as 
> can be seen, its in memory right now.

libata is built whenever CONFIG_ATA is enabled.

> 
> So please guys, what is the magic dependency that causes libata and 
> sata_nv to be included in a .config?

The SATA_NV kconfig symbol depends on (requires) the following other kconfig
symbols to be enabled:
	ATA_SFF and ATA_BMDMA and PCI and ATA

If those are not enabled, then you will need to use 'make <some>config' to
enabled them before you can enable SATA_NV.



-- 
~Randy
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