Differential D26131 Diff 77330 head/sys/amd64/amd64/minidump_machdep.c

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head/sys/amd64/amd64/minidump_machdep.c

Show First 20 Lines • Show All 293 Lines • ▼ Show 20 Lines	for (n = 0; n < NPDEPG; n++, va += NBPDR) {
dump_add_page(pa);		dump_add_page(pa);
}		}
}		}
}		}

/* Calculate dump size. */		/* Calculate dump size. */
dumpsize = pmapsize;		dumpsize = pmapsize;
dumpsize += round_page(msgbufp->msg_size);		dumpsize += round_page(msgbufp->msg_size);
		dumpsize += round_page(sizeof(dump_avail));
dumpsize += round_page(BITSET_SIZE(vm_page_dump_pages));		dumpsize += round_page(BITSET_SIZE(vm_page_dump_pages));
VM_PAGE_DUMP_FOREACH(pa) {		VM_PAGE_DUMP_FOREACH(pa) {
/* Clear out undumpable pages now if needed */		/* Clear out undumpable pages now if needed */
if (is_dumpable(pa)) {		if (is_dumpable(pa)) {
dumpsize += PAGE_SIZE;		dumpsize += PAGE_SIZE;
} else {		} else {
dump_drop_page(pa);		dump_drop_page(pa);
}		}
}		}
dumpsize += PAGE_SIZE;		dumpsize += PAGE_SIZE;

wdog_next = progress = dumpsize;		wdog_next = progress = dumpsize;

/* Initialize mdhdr */		/* Initialize mdhdr */
bzero(&mdhdr, sizeof(mdhdr));		bzero(&mdhdr, sizeof(mdhdr));
strcpy(mdhdr.magic, MINIDUMP_MAGIC);		strcpy(mdhdr.magic, MINIDUMP_MAGIC);
mdhdr.version = MINIDUMP_VERSION;		mdhdr.version = MINIDUMP_VERSION;
mdhdr.msgbufsize = msgbufp->msg_size;		mdhdr.msgbufsize = msgbufp->msg_size;
mdhdr.bitmapsize = round_page(BITSET_SIZE(vm_page_dump_pages));		mdhdr.bitmapsize = round_page(BITSET_SIZE(vm_page_dump_pages));
mdhdr.pmapsize = pmapsize;		mdhdr.pmapsize = pmapsize;
mdhdr.kernbase = VM_MIN_KERNEL_ADDRESS;		mdhdr.kernbase = VM_MIN_KERNEL_ADDRESS;
mdhdr.dmapbase = DMAP_MIN_ADDRESS;		mdhdr.dmapbase = DMAP_MIN_ADDRESS;
mdhdr.dmapend = DMAP_MAX_ADDRESS;		mdhdr.dmapend = DMAP_MAX_ADDRESS;
		mdhdr.dumpavailsize = round_page(sizeof(dump_avail));

dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_AMD64_VERSION,		dump_init_header(di, &kdh, KERNELDUMPMAGIC, KERNELDUMP_AMD64_VERSION,
dumpsize);		dumpsize);

error = dump_start(di, &kdh);		error = dump_start(di, &kdh);
if (error != 0)		if (error != 0)
goto fail;		goto fail;

printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,		printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,
ptoa((uintmax_t)physmem) / 1048576);		ptoa((uintmax_t)physmem) / 1048576);

/* Dump my header */		/* Dump my header */
bzero(&fakepd, sizeof(fakepd));		bzero(&fakepd, sizeof(fakepd));
bcopy(&mdhdr, &fakepd, sizeof(mdhdr));		bcopy(&mdhdr, &fakepd, sizeof(mdhdr));
error = blk_write(di, (char *)&fakepd, 0, PAGE_SIZE);		error = blk_write(di, (char *)&fakepd, 0, PAGE_SIZE);
if (error)		if (error)
goto fail;		goto fail;

/* Dump msgbuf up front */		/* Dump msgbuf up front */
error = blk_write(di, (char *)msgbufp->msg_ptr, 0, round_page(msgbufp->msg_size));		error = blk_write(di, (char *)msgbufp->msg_ptr, 0, round_page(msgbufp->msg_size));
		if (error)
		goto fail;

		/* Dump dump_avail */
		_Static_assert(sizeof(dump_avail) <= sizeof(fakepd),
		"Large dump_avail not handled");
		bzero(&fakepd, sizeof(fakepd));
		memcpy(fakepd, dump_avail, sizeof(dump_avail));
		error = blk_write(di, (char *)fakepd, 0, PAGE_SIZE);
if (error)		if (error)
goto fail;		goto fail;

/* Dump bitmap */		/* Dump bitmap */
error = blk_write(di, (char *)vm_page_dump, 0,		error = blk_write(di, (char *)vm_page_dump, 0,
round_page(BITSET_SIZE(vm_page_dump_pages)));		round_page(BITSET_SIZE(vm_page_dump_pages)));
if (error)		if (error)
goto fail;		goto fail;
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