Re: [v6,1/5] powernv:idle: Add IDLE_STATE_ENTER_SEQ_NORET macro

From	Michael Ellerman <patch-notifications@ellerman.id.au>
Newsgroups	linux.kernel
Subject	Re: [v6,1/5] powernv:idle: Add IDLE_STATE_ENTER_SEQ_NORET macro
Date	2017-02-01 02:10 +0100
Message-ID	<t5RAR-7Nm-3@gated-at.bofh.it> (permalink)
References	<t3rhx-7QP-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Wed, 2017-01-25 at 08:36:25 UTC, "Gautham R. Shenoy" wrote:
> From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
> 
> Currently all the low-power idle states are expected to wake up
> at reset vector 0x100. Which is why the macro IDLE_STATE_ENTER_SEQ
> that puts the CPU to an idle state and never returns.
> 
> On ISA v3.0, when the ESL and EC bits in the PSSCR are zero, the CPU
> is expected to wake up at the next instruction of the idle
> instruction.
> 
> This patch adds a new macro named IDLE_STATE_ENTER_SEQ_NORET for the
> no-return variant and reuses the name IDLE_STATE_ENTER_SEQ
> for a variant that allows resuming operation at the instruction next
> to the idle-instruction.
> 
> Acked-by: Balbir Singh <bsingharora@gmail.com>
> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>

Series applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/823b7bd5156a93872d9561b3f033df

cheers

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

Re: [v6,1/5] powernv:idle: Add IDLE_STATE_ENTER_SEQ_NORET macro Michael Ellerman <patch-notifications@ellerman.id.au> - 2017-02-01 02:10 +0100

csiph-web