Re: [PATCH v4 7/7] powerpc/64: Sanitise user registers on interrupt in pseries, POWERNV

2022-11-29 Thread Nicholas Piggin
On Tue Nov 29, 2022 at 2:43 PM AEST, Rohan McLure wrote: > Cause pseries and POWERNV platforms to default to zeroising all potentially > user-defined registers when entering the kernel by means of any interrupt > source, reducing user-influence of the kernel and the likelihood or > producing

[PATCH v4 7/7] powerpc/64: Sanitise user registers on interrupt in pseries, POWERNV

2022-11-28 Thread Rohan McLure
Cause pseries and POWERNV platforms to default to zeroising all potentially user-defined registers when entering the kernel by means of any interrupt source, reducing user-influence of the kernel and the likelihood or producing speculation gadgets. Signed-off-by: Rohan McLure --- Resubmitting