mm_vm_dump is for dumping a VM's stage 2 page table. To dump the hypervisor's page table (which is what mm_init is initialising), try:
mm_ptable_dump(&ptable, MM_FLAG_STAGE1);
If that doesn't work let me know and I'll try to reproduce the problem.
On Mon, 20 Jul 2020 at 17:20, Madhukar Pappireddy < Madhukar.Pappireddy@arm.com> wrote:
Hi Raghu and Andrew,
Thanks for the inputs. I have added the mm_vm_dump() call to the mm_init() function but nothing was dumped to uart log. I guess I am missing something trivial. It looks like mm_root_table_count() returns 0. Any suggestions?
diff --git a/src/mm.c b/src/mm.c index 2e352e9..7c56a09 100644 --- a/src/mm.c +++ b/src/mm.c @@ -1041,5 +1041,7 @@ bool mm_init(struct mpool *ppool) mm_identity_map(stage1_locked, layout_data_begin(), layout_data_end(), MM_MODE_R | MM_MODE_W, ppool);
mm_vm_dump(&ptable);return arch_mm_init(ptable.root);}
Thanks, Madhukar
-----Original Message----- From: Hafnium hafnium-bounces@lists.trustedfirmware.org On Behalf Of Andrew Walbran via Hafnium Sent: Friday, July 17, 2020 6:10 AM To: Raghu K raghu.ncstate@icloud.com Cc: hafnium@lists.trustedfirmware.org Subject: Re: [Hafnium] Debugging page table creation in Hafnium
Yep, mm_vm_dump sounds like what you're looking for. You can add a call where you like and it will go to the log UART.
On Thu, 16 Jul 2020 at 19:14, Raghu K via Hafnium < hafnium@lists.trustedfirmware.org> wrote:
Quick search indicates mm_vm_dump() and the functions it calls in src/mm.c should do what you want. i've not tried it or don't know the format, but this may be what you are looking for.
-Raghu
On 7/16/20 11:03 AM, Madhukar Pappireddy via Hafnium wrote:
Hi,
I was wondering if there is support in Hafnium to dump page tables to a
log file. I am new to the Hafnium project and would appreciate any help. Below is an example from TF-A which provides such provision.
......<snip> VERBOSE: Translation tables state: VERBOSE: Xlat regime: EL3 VERBOSE: Max allowed PA: 0xfffffffff VERBOSE: Max allowed VA: 0xfffffffff VERBOSE: Max mapped PA: 0x2f1fffff VERBOSE: Max mapped VA: 0x2f1fffff VERBOSE: Initial lookup level: 1 VERBOSE: Entries @initial lookup level: 64 VERBOSE: Used 3 sub-tables out of 5 (spare: 2) [LV1] VA:0x0 size:0x40000000 [LV2] VA:0x0 size:0x200000 [LV3] VA:0x0 PA:0x0 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x1000 PA:0x1000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x2000 PA:0x2000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x3000 PA:0x3000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x4000 PA:0x4000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x5000 PA:0x5000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x6000 PA:0x6000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x7000 PA:0x7000 size:0x1000 MEM-RO-EXEC-S [LV3] VA:0x8000 PA:0x8000 size:0x1000 MEM-RO-XN-S [LV3] VA:0x9000 PA:0x9000 size:0x1000 MEM-RO-XN-S [LV3] VA:0xa000 PA:0xa000 size:0x1000 MEM-RO-XN-S [LV3] VA:0xb000 size:0x1000 [LV3] (500 invalid descriptors omitted) [LV2] VA:0x200000 size:0x200000 [LV2] (30 invalid descriptors omitted) [LV2] VA:0x4000000 size:0x200000 ..... <snip>
Thanks, Madhukar
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