On Fri, 14 May 2010, Benjamin Kaduk wrote:
On Fri, 14 May 2010, Alan Cox wrote:
I suspect the following is needed:
Index: vm/vm_page.c
===================================================================
--- vm/vm_page.c (revision 207823)
+++ vm/vm_page.c (working copy)
@@ -108,6 +108,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/malloc.h>
+#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
@@ -375,6 +376,14 @@ vm_page_startup(vm_offset_t vaddr)
new_end + vm_page_dump_size, VM_PROT_READ | VM_PROT_WRITE);
bzero((void *)vm_page_dump, vm_page_dump_size);
#endif
+#ifdef __amd64__
+ pa = DMAP_TO_PHYS((vm_offset_t)msgbufp);
If I change this to be msgbufp->msg_ptr, then all works as expected.
While tracking this down, I realized that passing the -q(uiet) argument to
kgdb would have been a valid workaround all along.
Alan, could you please commit the modified patch?
Thanks,
Ben Kaduk
+ last_pa = pa + round_page(MSGBUF_SIZE);
+ while (pa < last_pa) {
+ dump_add_page(pa);
+ pa += PAGE_SIZE;
+ }
+#endif
/*
* Compute the number of pages of memory that will be available for
* use (taking into account the overhead of a page structure per
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