Paolo Bonzini <[email protected]> writes:
> On 01/08/2015 21:05, Bandan Das wrote:
>> Shih-Wei Li <[email protected]> writes:
>>
>>> Hi Paolo,
>>>
>>> I've tried to apply the patch, and found that it passed most of the
>>> problematic tests I mentioned earlier (IPI related, kvmclock_test).
>>> However, it stopped still at "s3" and couldn't finish it. Do you know
>>> what might go wrong?
>>
>> Nothing is wrong, that's the way the test is. You need to resume from
>> qemu for it to proceed and it should quit with 1 for error or 0 for
>> success.
>
> Actually it should be using the RTC alarm to wake itself up. But the
> firmware changed recently and the ACPI PMBASE moved from 0xb000 to
> 0x600. Try this (untested):
Ah thanks! your patch works for me. Is this one of the static entries in
the ACPI tables ? I am wondering if we can read this value so it works for
everybody.
> diff --git a/x86/s3.c b/x86/s3.c
> index d568aa7..d6cfef3 100644
> --- a/x86/s3.c
> +++ b/x86/s3.c
> @@ -177,7 +177,7 @@ int main(int argc, char **argv)
> rtc_out(RTC_REG_B, rtc_in(RTC_REG_B) | REG_B_AIE);
>
> *(volatile int*)0 = 0;
> - asm volatile("outw %0, %1" :: "a"((short)0x2400),
> "d"((short)0xb004):"memory");
> + asm volatile("outw %0, %1" :: "a"((short)0x2400),
> "d"((short)0x604):"memory");
> while(1)
> *(volatile int*)0 = 1;
>
>
> It's on my todo list to fix a very similar issue in vmexit.flat.
>
> Paolo
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