Date: Tue, 15 Oct 2002 18:11:57 -0700 From: Lars Eggert <larse@ISI.EDU> To: Juli Mallett <jmallett@FreeBSD.org> Cc: Jim Pirzyk <pirzyk@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/conf NOTES src/sys/i386/include atomic.h Message-ID: <3DACBCDD.3000903@isi.edu> References: <200210141933.g9EJXCCp079728@repoman.freebsd.org> <3DACBB41.9040709@isi.edu> <20021015180611.A15941@FreeBSD.org>
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This is a cryptographically signed message in MIME format. --------------ms090408070107080207020009 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Juli Mallett wrote: > * De: Lars Eggert <larse@ISI.EDU> [ Data: 2002-10-15 ] > [ Subjecte: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/conf NOTES src/sys/i386/include atomic.h ] > >>Jim Pirzyk wrote: >> >>>pirzyk 2002/10/14 12:33:12 PDT >>> >>> Modified files: >>> sys/conf options.i386 >>> sys/i386/conf NOTES >>> sys/i386/include atomic.h >>> Log: >>> Add a knob to turn on and off the CMPXCHG instruction on > i386 IA32 systems. >>> This is most beneficial for vmware client os installs. >> >>Setting this option in an SMP kernel makes it die a horrible death >>during boot. > > > Yes. And? Maybe a line could be added in NOTES stating that? (I know booting an SMP kernel inside vmware doesn't make sense; we have a custom setup that disables/enables kernel options per-machine from a common template, and it took me a bit to figure out why the SMP version suddenly crashed. We added CMPXCHG to the flags to turn off for SMP.) Lars -- Lars Eggert <larse@isi.edu> USC Information Sciences Institute --------------ms090408070107080207020009 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC AzgwggKhoAMCAQICEGZFcrfMdPXPY3ZFhNAukQEwDQYJKoZIhvcNAQEEBQAwgdExCzAJBgNV BAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgG A1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2Vydmlj ZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkG CSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMDA4MzAwMDAw MDBaFw0wNDA4MjcyMzU5NTlaMIGSMQswCQYDVQQGEwJaQTEVMBMGA1UECBMMV2VzdGVybiBD YXBlMRIwEAYDVQQHEwlDYXBlIFRvd24xDzANBgNVBAoTBlRoYXd0ZTEdMBsGA1UECxMUQ2Vy dGlmaWNhdGUgU2VydmljZXMxKDAmBgNVBAMTH1BlcnNvbmFsIEZyZWVtYWlsIFJTQSAyMDAw 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