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Re: [Qemu-arm] [Qemu-devel] [PATCH 10/20] nvic: Add NS alias SCS region
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-arm] [Qemu-devel] [PATCH 10/20] nvic: Add NS alias SCS region |
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Date: |
Tue, 5 Sep 2017 09:48:17 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
On 09/05/2017 09:26 AM, Peter Maydell wrote:
> We don't map the hole. The container is 0x21000 in size, the normal
> nvic_sysregs region is 0x1000 at offset 0x0 (which will be 0xe000e000
> in the system address space), and the NS alias region
> is 0x1000 at offset 0x20000 (0xe002e000 in the system address space).
> There's nothing mapped in the hole in the container, so accesses
> there will busfault, as they will for other PPB accesses before or
> after the SCSes.
Ok, it's not wrong, but I still don't understand the need for the container.
r~