Date: Mon, 3 Jun 2002 12:48:49 -0700 (PDT) From: Julian Elischer <julian@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 12331 for review Message-ID: <200206031948.g53JmnZ32562@freefall.freebsd.org>
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=12331 Change 12331 by julian@julian_ref on 2002/06/03 12:48:07 free the KV address space teh thread was using for its stack (does this happpen for the proc u-area yet?) Affected files ... ... //depot/projects/kse/sys/i386/i386/pmap.c#34 edit Differences ... ==== //depot/projects/kse/sys/i386/i386/pmap.c#34 (text+ko) ==== @@ -1093,14 +1093,19 @@ { int i; vm_object_t ksobj; - vm_offset_t ks; + vm_offset_t ks, ks2; vm_page_t m; pt_entry_t *ptek, oldpte; ksobj = td->td_kstack_obj; ks = td->td_kstack; ptek = vtopte(ks); +#ifdef KSTACK_GUARD + ks -= PAGE_SIZE; + for (i = 1; i < (KSTACK_PAGES + 1); i++) { +#else for (i = 0; i < KSTACK_PAGES; i++) { +#endif m = vm_page_lookup(ksobj, i); if (m == NULL) panic("pmap_dispose_thread: kstack already missing?"); @@ -1116,6 +1121,15 @@ #ifdef I386_CPU invltlb(); #endif + /* + * Free the space that this stack was mapped to in the kernel + * address map. + */ +#ifdef KSTACK_GUARD + kmem_free(kernel_map, ks, (KSTACK_PAGES + 1) * PAGE_SIZE); +#else + kmem_free(kernel_map, ks, KSTACK_PAGES * PAGE_SIZE); +#endif /* * If the thread got swapped out some of its KSTACK might have gotten To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe p4-projects" in the body of the message
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