From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergio Monteiro Basto Subject: Re: [git Patch 1/1] avoid IRQ0 ioapic pin collision Date: Sun, 23 Apr 2006 06:02:24 +0100 Message-ID: <1145768544.2858.8.camel@localhost.portugal> References: <20060420230931.10317.38083.sendpatchset@dhcp83-97.boston.redhat.com> Reply-To: sergio@sergiomb.no-ip.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=sha1; protocol="application/x-pkcs7-signature"; boundary="=-rBq9qIkagZvS0K14JEog" Return-path: Received: from smtp4.netcabo.pt ([212.113.174.31]:58979 "EHLO exch01smtp11.hdi.tvcabo") by vger.kernel.org with ESMTP id S1751215AbWDWE75 (ORCPT ); Sun, 23 Apr 2006 00:59:57 -0400 In-Reply-To: <20060420230931.10317.38083.sendpatchset@dhcp83-97.boston.redhat.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Kimball Murray Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org --=-rBq9qIkagZvS0K14JEog Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable On Thu, 2006-04-20 at 19:14 -0400, Kimball Murray wrote: > Our system uses an ACPI Interrupt Source Override to inform the OS > that the > 8254 timer (IRQ0) is on pin 1 of the ioapic. On that same ioapic, pin > 0 > handles an interrupt from a PCI device. The work-around for the VIA > chipset > now causes pin 0 to get IRQ0 on our platform, which the timer also > claims. > The sad result is both pins 0 and 1 drive IRQ0, but pins 0 and 1 have > different triggering characterists (and polarity), so time learches > forward > in an IRQ0 interrupt storm.=20 And how I now if my via motherboard suffers this problem ? Could be something like this messages : Losing some ticks... checking if CPU frequency changed. Thanks, --=20 S=E9rgio M. B. --=-rBq9qIkagZvS0K14JEog Content-Type: application/x-pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGSTCCAwIw ggJroAMCAQICAw/vkjANBgkqhkiG9w0BAQQFADBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhh d3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVt YWlsIElzc3VpbmcgQ0EwHhcNMDUxMTI4MjIyODU2WhcNMDYxMTI4MjIyODU2WjBLMR8wHQYDVQQD ExZUaGF3dGUgRnJlZW1haWwgTWVtYmVyMSgwJgYJKoZIhvcNAQkBFhlzZXJnaW9Ac2VyZ2lvbWIu bm8taXAub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApCNuKD3pz8GRKd1q+36r m0z7z+TBsbTrVa45UQsEeh9OQGZIASJMH5erC0u6KbKJ+km97RLOdsgSlKG6+5xuzsk+aqU7A0Gp kMjzIJT7UH/bbPnIFMQNnWJxluuYq1u+v8iIbfezQy1+SXyAyBv+OC7LnCOiOar/L9AD9zDy2fPX EqEDlbO3CJsoaR4Va8sgtoV0NmKnAt7DA0iZ2dmlsw6Qh+4euI+FgZ2WHPBQnfJ7PfSH5GIWl/Nx eUqnYpDaJafk/l94nX71UifdPXDMxJJlEOGqV9l4omhNlPmsZ/zrGXgLdBv9JuPjJ9mxhgwZsZbz VBc8emB0i3A7E6D6rwIDAQABo1kwVzAOBgNVHQ8BAf8EBAMCBJAwEQYJYIZIAYb4QgEBBAQDAgUg MCQGA1UdEQQdMBuBGXNlcmdpb0BzZXJnaW9tYi5uby1pcC5vcmcwDAYDVR0TAQH/BAIwADANBgkq hkiG9w0BAQQFAAOBgQBIVheRn3oHTU5rgIFHcBRxkIhOYPQHKk/oX4KakCrDCxp33XAqTG3aIG/v dsUT/OuFm5w0GlrUTrPaKYYxxfQ00+3d8y87aX22sUdj8oXJRYiPgQiE6lqu9no8axH6UXCCbKTi 8383JcxReoXyuP000eUggq3tWr6fE/QmONUARzCCAz8wggKooAMCAQICAQ0wDQYJKoZIhvcNAQEF BQAwgdExCzAJBgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUg VG93bjEaMBgGA1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24g U2VydmljZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTEr MCkGCSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMzA3MTcwMDAw MDBaFw0xMzA3MTYyMzU5NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3Vs dGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWlu ZyBDQTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8VXNV+065yplaHmjAdQRwnd/p/6Me 7L3N9VvyGna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7dyfArhVqqP3FWy688Cwfn8R+RNiQqE88r 1fOCdz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUPSAR/p7bRPGEEQB5kGXJgt/sCAwEAAaOBlDCB kTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1UdHwQ8MDowOKA2oDSGMmh0dHA6Ly9jcmwudGhhd3Rl LmNvbS9UaGF3dGVQZXJzb25hbEZyZWVtYWlsQ0EuY3JsMAsGA1UdDwQEAwIBBjApBgNVHREEIjAg pB4wHDEaMBgGA1UEAxMRUHJpdmF0ZUxhYmVsMi0xMzgwDQYJKoZIhvcNAQEFBQADgYEASIzRUIPq Cy7MDaNmrGcPf6+svsIXoUOWlJ1/TCG4+DYfqi2fNi/A9BxQIJNwPP2t4WFiw9k6GX6EsZkbAMUa C4J0niVQlGLH2ydxVyWN3amcOY6MIE9lX5Xa9/eH1sYITq726jTlEBpbNU1341YheILcIRk13iSx 0x1G/11fZU8xggHvMIIB6wIBATBpMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29u c3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNz dWluZyBDQQIDD++SMAkGBSsOAwIaBQCgXTAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwGCSqG SIb3DQEJBTEPFw0wNjA0MjMwNTAyMTdaMCMGCSqGSIb3DQEJBDEWBBSt/qWVE/K7v3q0tTcfLKIe EDO76TANBgkqhkiG9w0BAQEFAASCAQBlnqMsJ7kdsvEQmWOe5XbI/ooFl6Fh1ml4/P/dV7fP+O1b 5bDcQVUG7cQB4xVg5K41SFCKN9I6Vzj5cr3Gch8mQ0Iw9SfxyLvl2hLeLgWZzyR26B85gEq3q03f Ds6AGSP35Vhi3c6rRPSLOEB5kMee01PTTkE+BA+VRBIlnbaw2uoRZnJ+3qqtnrMt21VRcEb9FUDi CDpO0xF0Qu0NCtk1SlJLOfz+Wn8o0znh0djUtYdUVUgAJF+w/xm8dQGbmZHQ5VMEWYNmnFplvyzP KtBhv8p/f2DcD6j8Xs3Q0OuZtofzwRqwjZU9bOJ7upCM8riPSErAzrepbIVuEtyxn53bAAAAAAAA --=-rBq9qIkagZvS0K14JEog--