[Xen-devel] [PATCH] Fix a bug when ACPI registers in System_Memory

["Chen, Huacai" <huacai.chen@xxxxxxxxx>]

Hi, all,

 

Some ACPI registers may be in System_Memory but not System_IO space, For these machines S3 fails since current Xen use I/O instructions (e.g. inb(), outb(), etc.) to access ACPI registers. The patch attached fix the bug by adding GAS (generic address structure) support ported from Linux, which should also benefit later ACPI activity within Xen.

 

Best regards,

Huacai Chen

 

Signed-off-by: Huacai Chen <huacai.chen@xxxxxxxxx>

 

fix_regs_in_sys_mem.patch
Description: fix_regs_in_sys_mem.patch

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