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    SubjectRe: [patch V9-1 13/39] x86/entry: Switch XEN/PV hypercall entry to IDTENTRY
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    On 22.05.20 20:32, Thomas Gleixner wrote:
    > Convert the XEN/PV hypercall to IDTENTRY:
    >
    > - Emit the ASM stub with DECLARE_IDTENTRY
    > - Remove the ASM idtentry in 64bit
    > - Remove the open coded ASM entry code in 32bit
    > - Remove the old prototypes
    >
    > The handler stubs need to stay in ASM code as it needs corner case handling
    > and adjustment of the stack pointer.
    >
    > Provide a new C function which invokes the entry/exit handling and calls
    > into the XEN handler on the interrupt stack if required.
    >
    > The exit code is slightly different from the regular idtentry_exit() on
    > non-preemptible kernels. If the hypercall is preemptible and need_resched()
    > is set then XEN provides a preempt hypercall scheduling function.
    >
    > Move this functionality into the entry code so it can use the existing
    > idtentry functionality.
    >
    > Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

    Acked-by: Juergen Gross <jgross@suse.com>
    Tested-by: Juergen Gross <jgross@suse.com>


    Juergen

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