> -----Original Message-----
> From: U-Boot <[email protected]> On Behalf Of Zhiqiang Hou
> Sent: Friday, March 5, 2021 12:33 PM
> To: [email protected]
> Cc: [email protected]; [email protected]; Priyanka Jain
> <[email protected]>; Z.q. Hou <[email protected]>
> Subject: [PATCHv3] arm64: gic-v3-its: Clear the Pending table before enabling
> LPIs
>
> From: Hou Zhiqiang <[email protected]>
>
> The GICv3 RM requires "The first 1KB of memory for the LPI Pending tables must
> contain only zeros on initial allocation, and this must be visible to the
> Redistributors, or else the effect is UNPREDICTABLE".
>
> And as the following statement, we here clear the whole Pending tables instead
> of the first 1KB.
> "An LPI Pending table that contains only zeros, including in the first 1KB,
> indicates that there are no pending LPIs.
> The first 1KB of the LPI Pending table is IMPLEMENTATION DEFINED. However,
> if the first 1KB of the LPI Pending table and the rest of the table contain
> only
> zeros, this must indicate that there are no pending LPIs."
>
> And there isn't any pending LPI under U-Boot, so it's unnecessary to load the
> contents of the Pending table during the enablement, then set the
> GICR_PENDBASER.PTZ flag.
>
> Signed-off-by: Hou Zhiqiang <[email protected]>
> ---
> V3:
> - Fix a mistake code delete in v2.
>
Reviewed-by: Wasim Khan <[email protected]>
