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    SubjectRe: [RFC 4/6] x86, NMI, Rewrite NMI handler
    On Fri, Sep 10, 2010 at 10:51:03AM +0800, Huang Ying wrote:
    > The original NMI handler is quite outdated in many aspects. This patch
    > try to fix it.
    > In original code, NMI reason io port (0x61) is only processed on
    > BSP. This makes it impossible to hot-remove BSP. To solve the issue,
    > a raw spinlock is used to make the port can be processed on any CPU.

    Do we really want to use a spinlock inside the nmi handler?

    I thought the NMIs sent to the io port are only routed to one cpu as
    determined by the io-apic? Is it spread out to other cpus now?


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      Last update: 2010-09-10 17:59    [W:0.019 / U:1.608 seconds]
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