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Re: [PATCH] hw/arm/boot: set CPTR_EL3.ESM and SCR_EL3.EnTP2 when booting
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From: |
Richard Henderson |
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Subject: |
Re: [PATCH] hw/arm/boot: set CPTR_EL3.ESM and SCR_EL3.EnTP2 when booting Linux with EL3 |
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Date: |
Mon, 10 Oct 2022 07:16:14 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 |
On 10/10/22 06:16, Peter Maydell wrote:
The doc also says that we (as fake EL3) should be setting
SMCR_EL3.LEN to the same value for all CPUs. Currently we do
do that, but it's always the reset value of 0. Richard: does
that have any odd effects (I have a feeling it clamps the
VL to the minimum supported value)?
Yes, it clamps to minimum.
Should we be setting SMCR_EL3.LEN to the max supported value here?
We can set it to 15 universally without consequence.
It will be clamped to the max supported value elsewhere
when interpreting the combined EL[123] fields.
r~