Re: [Xen-devel] [PATCH V5 1/3] x86/altp2m: propagate ept.ad changes to all active altp2ms

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Razvan Cojocaru [mailto:rcojocaru@xxxxxxxxxxxxxxx]
> Sent: Sunday, November 11, 2018 10:07 PM
> 
> This patch is a pre-requisite for fixing the logdirty VGA issue
> (display freezes when switching to a new altp2m view early in a
> domain's lifetime), but sent separately for easier review.

it's in the series now, instead of sending separately.

> The new ept_set_ad_sync() function has been added to update all
> active altp2ms' ept.ad. New altp2ms will inherit the hostp2m's
> ept.ad value.
> 
> The p2m_{en,dis}able_hardware_log_dirty() hostp2m locking has
> been moved to the new ept_{en,dis}able_hardware_log_dirty()
> functions as part of the code refactoring, while locks for the
> individual altp2ms are taken in ept_set_ad_sync() (called by
> ept_{en,dis}able_pml()).
> 
> Signed-off-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
> Suggested-by: George Dunlap <george.dunlap@xxxxxxxxxx>
> Tested-by: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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