svn commit: r294098 - in head: lib/libkvm sys/arm/arm sys/arm/include
Svatopluk Kraus
skra at FreeBSD.org
Fri Jan 15 18:53:08 UTC 2016
Author: skra
Date: Fri Jan 15 18:53:06 2016
New Revision: 294098
URL: https://svnweb.freebsd.org/changeset/base/294098
Log:
Add mmu format info into ARM vmcore.
Fix kvatop translation for 64K pages.
Reviewed by: jhb
Approved by: kib (mentor)
Differential Revision: https://reviews.freebsd.org/D4942
Modified:
head/lib/libkvm/kvm_arm.h
head/lib/libkvm/kvm_minidump_arm.c
head/sys/arm/arm/minidump_machdep.c
head/sys/arm/include/minidump.h
Modified: head/lib/libkvm/kvm_arm.h
==============================================================================
--- head/lib/libkvm/kvm_arm.h Fri Jan 15 18:27:34 2016 (r294097)
+++ head/lib/libkvm/kvm_arm.h Fri Jan 15 18:53:06 2016 (r294098)
@@ -67,13 +67,16 @@ typedef uint32_t arm_pt_entry_t;
#define ARM_L1_C_ADDR_MASK 0xfffffc00 /* phys address of L2 Table */
#define ARM_L2_TYPE_INV 0x00 /* Invalid (fault) */
-#define ARM_L2_TYPE_L 0x01 /* Large Page - 64k - not used yet*/
-#define ARM_L2_TYPE_S 0x02 /* Small Page - 4 */
+#define ARM_L2_TYPE_L 0x01 /* Large Page - 64k */
+#define ARM_L2_TYPE_S 0x02 /* Small Page - 4k */
+#define ARM_L2_TYPE_T 0x03 /* Tiny Page - 1k - not used */
#define ARM_L2_TYPE_MASK 0x03
#define ARM_L2_ADDR_BITS 0x000ff000 /* L2 PTE address bits */
#ifdef __arm__
+#include <machine/acle-compat.h>
+
_Static_assert(PAGE_SHIFT == ARM_PAGE_SHIFT, "PAGE_SHIFT mismatch");
_Static_assert(PAGE_SIZE == ARM_PAGE_SIZE, "PAGE_SIZE mismatch");
_Static_assert(PAGE_MASK == ARM_PAGE_MASK, "PAGE_MASK mismatch");
@@ -99,6 +102,9 @@ _Static_assert(L1_C_ADDR_MASK == ARM_L1_
_Static_assert(L2_TYPE_INV == ARM_L2_TYPE_INV, "L2_TYPE_INV mismatch");
_Static_assert(L2_TYPE_L == ARM_L2_TYPE_L, "L2_TYPE_L mismatch");
_Static_assert(L2_TYPE_S == ARM_L2_TYPE_S, "L2_TYPE_S mismatch");
+#if __ARM_ARCH < 6
+_Static_assert(L2_TYPE_T == ARM_L2_TYPE_T, "L2_TYPE_T mismatch");
+#endif
_Static_assert(L2_TYPE_MASK == ARM_L2_TYPE_MASK, "L2_TYPE_MASK mismatch");
_Static_assert(L2_ADDR_BITS == ARM_L2_ADDR_BITS, "L2_ADDR_BITS mismatch");
#endif
Modified: head/lib/libkvm/kvm_minidump_arm.c
==============================================================================
--- head/lib/libkvm/kvm_minidump_arm.c Fri Jan 15 18:27:34 2016 (r294097)
+++ head/lib/libkvm/kvm_minidump_arm.c Fri Jan 15 18:53:06 2016 (r294098)
@@ -112,6 +112,12 @@ _arm_minidump_initvtop(kvm_t *kd)
vmst->hdr.bitmapsize = _kvm32toh(kd, vmst->hdr.bitmapsize);
vmst->hdr.ptesize = _kvm32toh(kd, vmst->hdr.ptesize);
vmst->hdr.kernbase = _kvm32toh(kd, vmst->hdr.kernbase);
+ vmst->hdr.arch = _kvm32toh(kd, vmst->hdr.arch);
+ vmst->hdr.mmuformat = _kvm32toh(kd, vmst->hdr.mmuformat);
+ if (vmst->hdr.mmuformat == MINIDUMP_MMU_FORMAT_UNKNOWN) {
+ /* This is a safe default as 1K pages are not used. */
+ vmst->hdr.mmuformat = MINIDUMP_MMU_FORMAT_V6;
+ }
/* Skip header and msgbuf */
off = ARM_PAGE_SIZE + arm_round_page(vmst->hdr.msgbufsize);
@@ -179,19 +185,27 @@ _arm_minidump_kvatop(kvm_t *kd, kvaddr_t
if (va >= vm->hdr.kernbase) {
pteindex = (va - vm->hdr.kernbase) >> ARM_PAGE_SHIFT;
pte = _kvm32toh(kd, ptemap[pteindex]);
- if (!pte) {
+ if ((pte & ARM_L2_TYPE_MASK) == ARM_L2_TYPE_INV) {
_kvm_err(kd, kd->program,
"_arm_minidump_kvatop: pte not valid");
goto invalid;
}
if ((pte & ARM_L2_TYPE_MASK) == ARM_L2_TYPE_L) {
- offset = va & ARM_L2_L_OFFSET;
- a = pte & ARM_L2_L_FRAME;
- } else if ((pte & ARM_L2_TYPE_MASK) == ARM_L2_TYPE_S) {
+ /* 64K page -> convert to be like 4K page */
+ offset = va & ARM_L2_S_OFFSET;
+ a = (pte & ARM_L2_L_FRAME) +
+ (va & ARM_L2_L_OFFSET & ARM_L2_S_FRAME);
+ } else {
+ if (kd->vmst->hdr.mmuformat == MINIDUMP_MMU_FORMAT_V4 &&
+ (pte & ARM_L2_TYPE_MASK) == ARM_L2_TYPE_T) {
+ _kvm_err(kd, kd->program,
+ "_arm_minidump_kvatop: pte not supported");
+ goto invalid;
+ }
+ /* 4K page */
offset = va & ARM_L2_S_OFFSET;
a = pte & ARM_L2_S_FRAME;
- } else
- goto invalid;
+ }
ofs = _kvm_hpt_find(&vm->hpt, a);
if (ofs == -1) {
@@ -203,7 +217,6 @@ _arm_minidump_kvatop(kvm_t *kd, kvaddr_t
*pa = ofs + offset;
return (ARM_PAGE_SIZE - offset);
-
} else
_kvm_err(kd, kd->program, "_arm_minidump_kvatop: virtual "
"address 0x%jx not minidumped", (uintmax_t)va);
Modified: head/sys/arm/arm/minidump_machdep.c
==============================================================================
--- head/sys/arm/arm/minidump_machdep.c Fri Jan 15 18:27:34 2016 (r294097)
+++ head/sys/arm/arm/minidump_machdep.c Fri Jan 15 18:53:06 2016 (r294098)
@@ -312,7 +312,12 @@ minidumpsys(struct dumperinfo *di)
mdhdr.bitmapsize = vm_page_dump_size;
mdhdr.ptesize = ptesize;
mdhdr.kernbase = KERNBASE;
-
+ mdhdr.arch = __ARM_ARCH;
+#if __ARM_ARCH >= 6
+ mdhdr.mmuformat = MINIDUMP_MMU_FORMAT_V6;
+#else
+ mdhdr.mmuformat = MINIDUMP_MMU_FORMAT_V4;
+#endif
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_ARM_VERSION, dumpsize,
di->blocksize);
Modified: head/sys/arm/include/minidump.h
==============================================================================
--- head/sys/arm/include/minidump.h Fri Jan 15 18:27:34 2016 (r294097)
+++ head/sys/arm/include/minidump.h Fri Jan 15 18:53:06 2016 (r294098)
@@ -28,11 +28,18 @@
*/
#ifndef _MACHINE_MINIDUMP_H_
-#define _MACHINE_MINIDUMP_H_ 1
+#define _MACHINE_MINIDUMP_H_
#define MINIDUMP_MAGIC "minidump FreeBSD/arm"
#define MINIDUMP_VERSION 1
+/*
+ * The first page of vmcore is dedicated to the following header.
+ * As the rest of the page is zeroed, any header extension can be
+ * done without version bumping. It should be taken into account
+ * only that new entries will be zero in old vmcores.
+ */
+
struct minidumphdr {
char magic[24];
uint32_t version;
@@ -40,6 +47,13 @@ struct minidumphdr {
uint32_t bitmapsize;
uint32_t ptesize;
uint32_t kernbase;
+ uint32_t arch;
+ uint32_t mmuformat;
};
+#define MINIDUMP_MMU_FORMAT_UNKNOWN 0
+#define MINIDUMP_MMU_FORMAT_V4 1
+#define MINIDUMP_MMU_FORMAT_V6 2
+#define MINIDUMP_MMU_FORMAT_V6_LPAE 3
+
#endif /* _MACHINE_MINIDUMP_H_ */
More information about the svn-src-all
mailing list