Use of ACPI_FLUSH_CPU_CACHE()

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I noticed that Linux does not define anything for this macro (in aclinux.h)

#define ACPI_FLUSH_CPU_CACHE()

 
A more typical implementation is:

#define ACPI_FLUSH_CPU_CACHE() Wbinvd()

 
This macro is used just before sleeping. Specifically, just before writing SLP_TYP and SLP_EN in AcpiEnterSleepState, when the cache should be flushed.

It seems to me that this is a bug.

Bob

 

 

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