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Hello,
Is the sata_nv (based on SCSI) driver supposed to work with Xen?
When I tried to boot my dom0 kernel recompiled with the sata_nv drivers
enabled my kernel locks up, I guess when probing the first drive
connected via S-ATA. ("Screenshot" here:
<URL:http://mjh.name/xen.lock.1.jpg>) (Kernel also says that partition
tables of the two IDE drives are unknown, this is because these are
currently zeroed and will be used for backup purposes at some time.)
Vanilla 2.6.9 (patched with Reiser4, but I really this would make the
kernel not lock up at probing S-ATA drives...) boots fine. I''d be
happy
to provide more information; my .config is attached.
Hardware is Athlon64 3000, MSI K8N Neo 2 Platinum with nVidia nForce 250
Gb chipset, 2x512 MByte of RAM, 2 Samsung 120 GB drives at S-ATA 1 and
2.
Regards,
Milan
- --
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> Is the sata_nv (based on SCSI) driver supposed to work with Xen?I''d have hoped it would have worked, but it hasn''t been tested. Xen is less forgiving of technically buggy drivers than standard x86. Drivers that have been made to work on other architectures such as Alpha and PPC tend to have had such bugs beaten out of them, but I guess sata_nv isn''t in that category. My guess would be that there''s some code in the driver that is taking liberties with treating physical and bus addresses as the same. If you can add some tracing to the driver to narrow things down we may be able to help you. Ian ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader''s Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Fri, 05 Nov 2004 22:52:16 +0000 Ian Pratt <Ian.Pratt@cl.cam.ac.uk> wrote:> > Is the sata_nv (based on SCSI) driver supposed to work with Xen? > > I''d have hoped it would have worked, but it hasn''t been tested. > > Xen is less forgiving of technically buggy drivers than standard > x86. Drivers that have been made to work on other architectures > such as Alpha and PPC tend to have had such bugs beaten out of > them, but I guess sata_nv isn''t in that category.Nope, since the nForce chipset is currently only used for x86/x86_64 hardware (afaik).> My guess would be that there''s some code in the driver that is > taking liberties with treating physical and bus addresses as the > same. If you can add some tracing to the driver to narrow things > down we may be able to help you.Well I have some basic knowledges of C, (at the very least enough for printing/logging some numbers :) ) but I haven''t done anything with the Linux kernel or hardware related stuff so far, so can you give any generally applicable pointers where to start with what? (or point me to some pointers :) )> Ianthanks for your help Milan PS: currently I''m reading this list via gmane.org, so no real need to CC me :) - -- Milan Holzäpfel alias jagdfalke alias jag Antworten direkt an mich Answers directly to me gehen bitte an eine Addresse, go to an address one die man hier finden kann: can find here, please: Kontaktinfos sowie Contact infos as well as Öff GnuPG-Schlüssel <URL:http://con.mjh.name/> GnuPG Public Key GnuPG Fingerabdruck 4C8A 5FAF 5D32 6125 89D1 GnuPG Fingerprint 0CE5 DB0C AF4F 6583 7966 http://www.deppenleerzeichen.de/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFBjKMe2wyvT2WDeWYRAgZBAJ4lDjPx9Q2LIGgLImsb2QNnQnPvLQCePbBt omVmI3ozAHuNo3ShL+P09V8=xiMx -----END PGP SIGNATURE----- ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader''s Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_idU88&alloc_id065&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Ian Pratt <Ian.Pratt <at> cl.cam.ac.uk> writes:> Xen is less forgiving of technically buggy drivers than standard > x86. Drivers that have been made to work on other architectures > such as Alpha and PPC tend to have had such bugs beaten out of > them, but I guess sata_nv isn''t in that category. > > My guess would be that there''s some code in the driver that is > taking liberties with treating physical and bus addresses as the > same. If you can add some tracing to the driver to narrow things > down we may be able to help you.I have very similar problem with sata_via (SCSI) driver. Can you give me pointers to track down the problem ? Cédric ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > My guess would be that there''s some code in the driver that > is taking > > liberties with treating physical and bus addresses as the > same. If you > > can add some tracing to the driver to narrow things down we may be > > able to help you. > > I have very similar problem with sata_via (SCSI) driver. > Can you give me pointers to track down the problem ?Are you getting a hang or a kernel oops? See if the driver has any debug tracing you can enable. If not, just sprinkle some printk''s around. Pay particular attention to any ''virt_to_phy'' or similar functions - they should probably be virt_to_bus. I suspect the problem is localised to the driver, as the sata_promise driver works for us just fine. Ian ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> Ian Pratt <Ian.Pratt <at> cl.cam.ac.uk> writes: > > > Xen is less forgiving of technically buggy drivers than standard > > x86. Drivers that have been made to work on other architectures > > such as Alpha and PPC tend to have had such bugs beaten out of > > them, but I guess sata_nv isn''t in that category. > > > > My guess would be that there''s some code in the driver that is > > taking liberties with treating physical and bus addresses as the > > same. If you can add some tracing to the driver to narrow things > > down we may be able to help you. > > > I have very similar problem with sata_via (SCSI) driver. > Can you give me pointers to track down the problem ? > > CédricPerhaps a starting point would be to compare the start-of-day driver messages from booting native Linux compared with booting XenLinux. Also, after booting native Linux, take a look at the output of ''cat /proc/interrupts'' and see what IRQ# is allocated to teh SATA controller. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sat, 13 Nov 2004 20:03:58 -0000 "Ian Pratt" <m+Ian.Pratt@cl.cam.ac.uk> wrote:> > > > My guess would be that there''s some code in the driver that > > > is taking > > > liberties with treating physical and bus addresses as the > > > same. If you > > > can add some tracing to the driver to narrow things down we may be > > > able to help you. > > > > I have very similar problem with sata_via (SCSI) driver. > > Can you give me pointers to track down the problem ? > > Are you getting a hang or a kernel oops?hang, no oops message or anything, it just stops> See if the driver has any debug tracing you can enable. If not, just sprinkle some printk''s around. Pay particular attention to any ''virt_to_phy'' or similar functions - they should probably be virt_to_bus.Well just after writing my last mail I had a short look at the driver, and I think I have found some path from the driver initialization part down to where the last messages are printed, but I hadn''t time to add printks or whatever so far. But thanks for the funtion name, I will pay attention to it when I get to having a look at it. A word to Keir''s post: From my experimentation a week ago, I do remember that some different IRQ was used for the S-ATA controller with native linux vs Xen linux. On another point, I don''t know how much output I will produce (for my two disks at two ports), but I doubt that it will fit my screen if I am finally diligent in the driver :) So either I capture the log via some serial port (if that is possible to do with just another PC next to it and some cable) or via the kernel''s net-log-facility, but that would require it working before the initialization of the S-ATA controller... ok I won''t look at it right now anyway but if you have some links lying around, feel free to post them ;) (in case you should be interested, I just spend this weeks free time participating in bwinf, "Bundeswettbewerb für Informatik", some German informatics competition, and I have 3 class tests to do this week, so maybe I get to it next weekend or so :) )> I suspect the problem is localised to the driver, as the sata_promise driver works for us just fine.that sounds reasonable> IanRegards, Milan - -- Milan Holzäpfel alias jagdfalke alias jag Antworten direkt an mich Answers directly to me gehen bitte an eine Addresse, go to an address one die man hier finden kann: can find here, please: Kontaktinfos sowie Contact infos as well as Öff GnuPG-Schlüssel <URL:http://con.mjh.name/> GnuPG Public Key GnuPG Fingerabdruck 4C8A 5FAF 5D32 6125 89D1 GnuPG Fingerprint 0CE5 DB0C AF4F 6583 7966 http://www.deppenleerzeichen.de/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFBlzU62wyvT2WDeWYRArpZAKC4v5oDAcgN5DrMHKN71HC8tZ85zwCgki7q RmH4ugavTiAQ1jGNx3pzRV8=8Ft3 -----END PGP SIGNATURE----- ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> On another point, I don''t know how much output I will produce (for my > two disks at two ports), but I doubt that it will fit my screen if I am > finally diligent in the driver :) So either I capture the log via some > serial port (if that is possible to do with just another PC next to it > and some cable) or via the kernel''s net-log-facility, but that would > require it working before the initialization of the S-ATA controller... > ok I won''t look at it right now anyway but if you have some links lying > around, feel free to post them ;)Serial port is your best bet. If you have 115.2kbaud connection then: 1. Add ''com1=115200,8n1'' to Xen''s command line. 2. ''console=tty0'' becomes ''console=ttyS0'' on XenLinux''s command line. -- Keir ------------------------------------------------------- This SF.Net email is sponsored by: InterSystems CACHE FREE OODBMS DOWNLOAD - A multidimensional database that combines robust object and relational technologies, making it a perfect match for Java, C++,COM, XML, ODBC and JDBC. www.intersystems.com/match8 _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel