Date: Fri, 12 Oct 2001 11:05:56 -0700 (PDT) From: Matt Dillon <dillon@earth.backplane.com> To: Julian Elischer <julian@elischer.org> Cc: hackers@FreeBSD.ORG, developers@FreeBSD.ORG Subject: Re: Patch to allow 4.2 driver .o to run on 4.4 Message-ID: <200110121805.f9CI5uY34981@earth.backplane.com> References: <Pine.BSF.4.21.0110111604380.37124-100000@InterJet.elischer.org>
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:Sorry about the crosspost but I estimate that this reaches those who need :to see this.. : :There was a change in the 4.x kernel.h on June 15 that broke backwards :compatibility for binary distributed driver files :(distributed as .o files) It was an MFC of a patch by peter.. :but we didn't understand the ramifications in 4.x. This seems very reasonable to me... a nice quick and easy solution. -Matt :my fix (a reversion in part) is as follows: : :Index: kernel.h :=================================================================== :RCS file: /repos/cvs/mod/freebsd/src/sys/sys/kernel.h,v :retrieving revision 1.63.2.5 :diff -u -r1.63.2.5 kernel.h :--- kernel.h 2001/07/26 23:27:53 1.63.2.5 :+++ kernel.h 2001/10/11 21:30:03 :@@ -113,13 +113,13 @@ : SI_SUB_VM = 0x1000000, /* virtual memory system :init*/ : SI_SUB_KMEM = 0x1800000, /* kernel memory*/ : SI_SUB_KVM_RSRC = 0x1A00000, /* kvm operational :limits*/ :- SI_SUB_CPU = 0x2000000, /* CPU resource(s)*/ :- SI_SUB_KLD = 0x2100000, /* KLD and module setup */ :... : :The result of this was that old .o drivers are initialise at sequence :0x2400000 but the device framework is not initialised until 0x3100000. : :my patch shifts all the numbers back to below that that binary :... :Julian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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