Re: [PATCH] (Longhaul 1/5) PCI: Protect bus master DMA from Longhaulby rw semaphores

[Rafał Bilski]

> Hi Rafał,
> 
> Any code to show? Just in case... ;-)
> 
> Groeten,
> Bart
> 

I'm using this for L2 cache:
	preempt_disable();
	local_irq_save(flags);
	rdmsr(MSR_VIA_FCR, lo, hi);
	flush_cache_all();
	wrmsr(MSR_VIA_FCR, lo | 1 << 8, hi);
and this doesn't stop the processor, but when I'm adding
1 << 13 or 1 << 14 CPU stops. I have tried
	flush_cache_all();
	wrmsr(MSR_VIA_FCR, lo | 1 << 8, hi);
	flush_cache_all();
	wrmsr(MSR_VIA_FCR, lo | 1 << 8 | 1 << 13, hi);
and
	flush_cache_all();
	wrmsr(MSR_VIA_FCR, lo | 1 << 8 | 1 << 13, hi);
and more, but result was always the same.

I will be very gratefull if You tell me what I'm doing wrong.

Rafał


----------------------------------------------------------------------
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