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    SubjectRe: [PATCH v3 1/3] powernv:idle: Add IDLE_STATE_ENTER_SEQ_NORET macro
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    On 10/11/16 18:54, 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_300, 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

    I think something like IDLE_STATE_ENTER_SEQ_LOSE_CTX would be better?

    > 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.
    >
    <snip>
    > +
    > +#define IDLE_STATE_ENTER_SEQ_NORET(IDLE_INST) \
    > + IDLE_STATE_ENTER_SEQ(IDLE_INST) \

    So we start off with both as the same?

    > b .
    > #endif /* CONFIG_PPC_P7_NAP */
    <snip>
    Balbir

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