Differential D31991 Diff 95262 sys/amd64/amd64/minidump_machdep.c

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sys/amd64/amd64/minidump_machdep.c

Show First 20 Lines • Show All 166 Lines • ▼ Show 20 Lines	cpu_minidumpsys(struct dumperinfo di, struct minidumpstate state)
uint32_t pmapsize;		uint32_t pmapsize;
vm_offset_t va, kva_end;		vm_offset_t va, kva_end;
int error;		int error;
uint64_t pml4, pdp, pd, pt, pa;		uint64_t pml4, pdp, pd, pt, pa;
uint64_t pdpe, pde, pte;		uint64_t pdpe, pde, pte;
int ii, j, k, n;		int ii, j, k, n;
int retry_count;		int retry_count;
struct minidumphdr mdhdr;		struct minidumphdr mdhdr;
		struct msgbuf *mbp;

retry_count = 0;		retry_count = 0;
retry:		retry:
retry_count++;		retry_count++;

/* Snapshot the KVA upper bound in case it grows. */		/* Snapshot the KVA upper bound in case it grows. */
kva_end = MAX(KERNBASE + nkpt * NBPDR, kernel_vm_end);		kva_end = MAX(KERNBASE + nkpt * NBPDR, kernel_vm_end);

▲ Show 20 Lines • Show All 65 Lines • ▼ Show 20 Lines	for (n = 0; n < NPDEPG; n++, va += NBPDR) {
pa = pte & PG_FRAME;		pa = pte & PG_FRAME;
if (dump_page_is_dumpable(pa))		if (dump_page_is_dumpable(pa))
dump_add_page(pa);		dump_add_page(pa);
}		}
}		}
}		}

/* Calculate dump size. */		/* Calculate dump size. */
		mbp = state->msgbufp;
dumpsize = pmapsize;		dumpsize = pmapsize;
dumpsize += round_page(msgbufp->msg_size);		dumpsize += round_page(mbp->msg_size);
dumpsize += round_page(sizeof(dump_avail));		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 (dump_page_is_dumpable(pa)) {		if (dump_page_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;
dumpsys_pb_init(dumpsize);		dumpsys_pb_init(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 = mbp->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));		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,
Show All 9 Lines	retry:
/* 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 *)mbp->msg_ptr, 0,
		markjUnsubmitted Not Done Inline Actions While here, the casts to `(char )` can be dropped. markj:* While here, the casts to `(char *)` can be dropped.
		round_page(mbp->msg_size));
if (error)		if (error)
goto fail;		goto fail;

/* Dump dump_avail */		/* Dump dump_avail */
_Static_assert(sizeof(dump_avail) <= sizeof(fakepd),		_Static_assert(sizeof(dump_avail) <= sizeof(fakepd),
"Large dump_avail not handled");		"Large dump_avail not handled");
bzero(&fakepd, sizeof(fakepd));		bzero(&fakepd, sizeof(fakepd));
memcpy(fakepd, dump_avail, sizeof(dump_avail));		memcpy(fakepd, dump_avail, sizeof(dump_avail));
▲ Show 20 Lines • Show All 96 Lines • Show Last 20 Lines