Re: [PATCH] powerpc/powernv/idle: add a basic stop 0-3 driver for POWER10

From: Pratik Sampat <psampat@linux.ibm.com>
To: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org
Cc: "Gautham R . Shenoy" <ego@linux.vnet.ibm.com>,
	Michael Neuling <mikey@neuling.org>,
	Ryan P Grimm <rgrimm@us.ibm.com>
Subject: Re: [PATCH] powerpc/powernv/idle: add a basic stop 0-3 driver for POWER10
Date: Wed, 19 Aug 2020 23:10:18 +0530	[thread overview]
Message-ID: <b83eb88d-54e1-b7f4-49f6-89ea7f80f838@linux.ibm.com> (raw)
In-Reply-To: <20200819094700.493399-1-npiggin@gmail.com>

On 19/08/20 3:17 pm, Nicholas Piggin wrote:
> This driver does not restore stop > 3 state, so it limits itself
> to states which do not lose full state or TB.
>
> The POWER10 SPRs are sufficiently different from P9 that it seems
> easier to split out the P10 code. The POWER10 deep sleep code
> (e.g., the BHRB restore) has been taken out, but it can be re-added
> when stop > 3 support is added.
>
> Cc: Ryan P Grimm <rgrimm@us.ibm.com>
> Cc: Michael Neuling <mikey@neuling.org>
> Cc: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
> Cc: Pratik Rajesh Sampat <psampat@linux.ibm.com>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
>
Fixes: 8747bf36f312 ("powerpc/powernv/idle: Replace CPU feature check 
with PVR check")

The patch fixes the commit 8747bf36f312 which had setup idle for only 
for the P9 PVR.

---
Thanks for fixing this!
Pratik