Re: [PATCH 1/2] efi+tpm: Don't access event->count when it isn't mapped.

From: Jarkko Sakkinen
Date: Mon Aug 26 2019 - 12:28:33 EST

On Mon, Aug 26, 2019 at 11:30:27AM -0400, Peter Jones wrote:
> Some machines generate a lot of event log entries. When we're
> iterating over them, the code removes the old mapping and adds a
> new one, so once we cross the page boundary we're unmapping the page
> with the count on it. Hilarity ensues.
> This patch keeps the info from the header in local variables so we don't
> need to access that page again or keep track of if it's mapped.
> Signed-off-by: Peter Jones <pjones@xxxxxxxxxx>
> Tested-by: Lyude Paul <lyude@xxxxxxxxxx>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>