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sys/i386/i386/minidump_machdep_base.c
Show First 20 Lines • Show All 56 Lines • ▼ Show 20 Lines | |||||
static struct kerneldumpheader kdh; | static struct kerneldumpheader kdh; | ||||
/* Handle chunked writes. */ | /* Handle chunked writes. */ | ||||
static size_t fragsz; | static size_t fragsz; | ||||
static void *dump_va; | static void *dump_va; | ||||
static uint64_t counter, progress; | static uint64_t counter, progress; | ||||
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 110 Lines • ▼ Show 20 Lines | for (va = KERNBASE; va < kernel_vm_end; va += NBPDR) { | ||||
*/ | */ | ||||
ptesize += PAGE_SIZE; | ptesize += PAGE_SIZE; | ||||
pd = IdlePTD; /* always mapped! */ | pd = IdlePTD; /* always mapped! */ | ||||
j = va >> PDRSHIFT; | j = va >> PDRSHIFT; | ||||
if ((pd[j] & (PG_PS | PG_V)) == (PG_PS | PG_V)) { | if ((pd[j] & (PG_PS | PG_V)) == (PG_PS | PG_V)) { | ||||
/* 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; | ||||
} | } | ||||
if ((pd[j] & PG_V) == PG_V) { | if ((pd[j] & PG_V) == PG_V) { | ||||
/* set bit for each valid page in this 2MB block */ | /* set bit for each valid page in this 2MB block */ | ||||
pt = pmap_kenter_temporary(pd[j] & PG_FRAME, 0); | pt = pmap_kenter_temporary(pd[j] & PG_FRAME, 0); | ||||
for (k = 0; k < NPTEPG; k++) { | for (k = 0; k < NPTEPG; k++) { | ||||
if ((pt[k] & PG_V) == PG_V) { | if ((pt[k] & PG_V) == PG_V) { | ||||
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); | ||||
} | } | ||||
} | } | ||||
} else { | } else { | ||||
/* nothing, we're going to dump a null page */ | /* nothing, we're going to dump a null page */ | ||||
} | } | ||||
} | } | ||||
/* Calculate dump size. */ | /* Calculate dump size. */ | ||||
dumpsize = ptesize; | dumpsize = ptesize; | ||||
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; | ||||
progress = dumpsize; | progress = dumpsize; | ||||
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