On 2017-10-23 13:17, Quantum wrote:
> Hello, I am having an issue whilst trying to enable Jailhouse on an Apollo
> Lake SoC. I was unsure whether to post on here or on IRC but I figured this
> would be better since then any solution can be archived.
>
> The problem I am getting is relating to an invalid PIO read:
> FATAL: Invalid PIO read, port: 400 size: 2
> RIP: 0xffffffff8128b2ce RSP: 0xffffc90000073d28 FLAGS: 46
> RAX: 0x0000000000000000 RBX: 0x0000000000000400 RCX: 0x00000000000004d1
> RDX: 0x0000000000000400 RSI: 0xffffc90000073d9c RDI: 0x0000000000000400
> CS: 10 BASE: 0x0000000000000000 AR-BYTES: a09b EFER.LMA 1
> CR0: 0x0000000080050033 CR3: 0x0000000001a09000 CR4: 0x00000000003426e0
> EFER: 0x0000000000000d01
> Parking CPU 2 (Cell: "RootCell")
>
> I have been looking around in this Google group and have tried editing
> pio_bitmap as suggested (.pio_bitmap = {0}) and still have the same issue.
> The port it seems to be complaining about is the ACPI PM1a_EVT_BLK. From
> /proc/ioports:
> 0400-047f : INT34D2:00
> 0400-047f : pnp 00:00
> 0400-0403 : ACPI PM1a_EVT_BLK
> 0404-0405 : ACPI PM1a_CNT_BLK
> 0408-040b : ACPI PM_TMR
> 0420-043f : ACPI GPE0_BLK
> 0450-0450 : ACPI PM2_CNT_BLK
>
> I am currently stuck on this issue having searched around this group for
> solutions and having tried as many as I have found.
You have to make sure that the bits that relate to the accessed ports
are cleared in the bitmap. The config you attached didn't try this yet.
Jan
--
Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux
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