Changeset View
Changeset View
Standalone View
Standalone View
sys/amd64/amd64/minidump_machdep.c
| Show First 20 Lines • Show All 60 Lines • ▼ Show 20 Lines | |||||
| static size_t fragsz; | static size_t fragsz; | ||||
| static void *dump_va; | static void *dump_va; | ||||
| static size_t counter, progress, dumpsize, wdog_next; | static size_t counter, progress, dumpsize, wdog_next; | ||||
| static int dump_retry_count = 5; | static int dump_retry_count = 5; | ||||
| SYSCTL_INT(_machdep, OID_AUTO, dump_retry_count, CTLFLAG_RWTUN, | SYSCTL_INT(_machdep, OID_AUTO, dump_retry_count, CTLFLAG_RWTUN, | ||||
| &dump_retry_count, 0, "Number of times dump has to retry before bailing out"); | &dump_retry_count, 0, "Number of times dump has to retry before bailing out"); | ||||
| static int | |||||
| is_dumpable(vm_paddr_t pa) | |||||
| { | |||||
| vm_page_t m; | |||||
| int i; | |||||
| if ((m = vm_phys_paddr_to_vm_page(pa)) != NULL) | |||||
| return ((m->flags & PG_NODUMP) == 0); | |||||
| for (i = 0; dump_avail[i] != 0 || dump_avail[i + 1] != 0; i += 2) { | |||||
| if (pa >= dump_avail[i] && pa < dump_avail[i + 1]) | |||||
| return (1); | |||||
| } | |||||
| return (0); | |||||
| } | |||||
| #define PG2MB(pgs) (((pgs) + (1 << 8) - 1) >> 8) | #define PG2MB(pgs) (((pgs) + (1 << 8) - 1) >> 8) | ||||
| static int | static int | ||||
| blk_flush(struct dumperinfo *di) | blk_flush(struct dumperinfo *di) | ||||
| { | { | ||||
| int error; | int error; | ||||
| if (fragsz == 0) | if (fragsz == 0) | ||||
| ▲ Show 20 Lines • Show All 159 Lines • ▼ Show 20 Lines | for (va = VM_MIN_KERNEL_ADDRESS; va < MAX(KERNBASE + nkpt * NBPDR, | ||||
| /* | /* | ||||
| * 1GB page is represented as 512 2MB pages in a dump. | * 1GB page is represented as 512 2MB pages in a dump. | ||||
| */ | */ | ||||
| if ((pdp[i] & PG_PS) != 0) { | if ((pdp[i] & PG_PS) != 0) { | ||||
| va += NBPDP; | va += NBPDP; | ||||
| pa = pdp[i] & PG_PS_FRAME; | pa = pdp[i] & PG_PS_FRAME; | ||||
| for (n = 0; n < NPDEPG * NPTEPG; n++) { | for (n = 0; n < NPDEPG * NPTEPG; n++) { | ||||
| if (is_dumpable(pa)) | if (vm_phys_is_dumpable(pa)) | ||||
| dump_add_page(pa); | dump_add_page(pa); | ||||
| pa += PAGE_SIZE; | pa += PAGE_SIZE; | ||||
| } | } | ||||
| continue; | continue; | ||||
| } | } | ||||
| pd = (uint64_t *)PHYS_TO_DMAP(pdp[i] & PG_FRAME); | pd = (uint64_t *)PHYS_TO_DMAP(pdp[i] & PG_FRAME); | ||||
| for (n = 0; n < NPDEPG; n++, va += NBPDR) { | for (n = 0; n < NPDEPG; n++, va += NBPDR) { | ||||
| j = pmap_pde_index(va); | j = pmap_pde_index(va); | ||||
| if ((pd[j] & PG_V) == 0) | if ((pd[j] & PG_V) == 0) | ||||
| continue; | continue; | ||||
| if ((pd[j] & PG_PS) != 0) { | if ((pd[j] & PG_PS) != 0) { | ||||
| /* This is an entire 2M page. */ | /* This is an entire 2M page. */ | ||||
| pa = pd[j] & PG_PS_FRAME; | pa = pd[j] & PG_PS_FRAME; | ||||
| for (k = 0; k < NPTEPG; k++) { | for (k = 0; k < NPTEPG; k++) { | ||||
| if (is_dumpable(pa)) | if (vm_phys_is_dumpable(pa)) | ||||
| dump_add_page(pa); | dump_add_page(pa); | ||||
| pa += PAGE_SIZE; | pa += PAGE_SIZE; | ||||
| } | } | ||||
| continue; | continue; | ||||
| } | } | ||||
| pa = pd[j] & PG_FRAME; | pa = pd[j] & PG_FRAME; | ||||
| /* set bit for this PTE page */ | /* set bit for this PTE page */ | ||||
| if (is_dumpable(pa)) | if (vm_phys_is_dumpable(pa)) | ||||
| dump_add_page(pa); | dump_add_page(pa); | ||||
| /* and for each valid page in this 2MB block */ | /* and for each valid page in this 2MB block */ | ||||
| pt = (uint64_t *)PHYS_TO_DMAP(pd[j] & PG_FRAME); | pt = (uint64_t *)PHYS_TO_DMAP(pd[j] & PG_FRAME); | ||||
| for (k = 0; k < NPTEPG; k++) { | for (k = 0; k < NPTEPG; k++) { | ||||
| if ((pt[k] & PG_V) == 0) | if ((pt[k] & PG_V) == 0) | ||||
| continue; | continue; | ||||
| pa = pt[k] & PG_FRAME; | pa = pt[k] & PG_FRAME; | ||||
| if (is_dumpable(pa)) | if (vm_phys_is_dumpable(pa)) | ||||
| 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(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 (vm_phys_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; | ||||
| ▲ Show 20 Lines • Show All 137 Lines • Show Last 20 Lines | |||||