Date: Thu, 24 Jul 2003 17:45:57 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: David Xu <davidxu@freebsd.org> Cc: marcel@xcllnt.net Subject: Re: KSD/TSD take 2 (was: KSE critical regions) Message-ID: <Pine.BSF.4.21.0307241632290.71231-100000@InterJet.elischer.org> In-Reply-To: <005701c35238$dc713a00$0701a8c0@tiger>
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On Fri, 25 Jul 2003, David Xu wrote: > > > > > Dan has two fields in kse_mailbox: > > void *km_ksdaddr; /* KSE specific data address */ > uint32_t km_ksdsize; /* KSE specific data size */ > > I think it is used to tell kernel to map start address > of libkse's kse mailbox like above lib_kse_mailbox. > > > presently it requires special code to do the segments.. > > (in teh library) > > > > > Did you make some progresses in this area ? It requires thatI rewrite the LDT code in WINE because wine just clobbers the LDT without looking to see if anyone else is using entries.. My aim was to have a call i386_set_ldt that takes an addr and length and returns teh value that needs to be set into a segment register in order to access that segment (or error if no more segments available). Wine could use it from userland and kse_create could use it from inside the kernel to set up a segment that covers the mailbox. kse_create would set it into the %gs register of the newly created kse. having it done by by the library with the 'shotgun' code is probably good enough for now > > >
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