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Date: Tue, 6 Apr 2010 02:44:09 +0400 (MSD)
From: malc <av1474@comtv.ru>
Subject: Re: [Qemu-devel] [Applied PATCH] Split TLB addend and
	target_phys_addr_t
In-Reply-To: <3D8AED7A-94E9-4911-ABE1-0A09AFD325D5@suse.de>
Message-ID: <alpine.LNX.2.00.1004060242540.17170@linmac>
References: <201004050221.08284.paul@codesourcery.com>
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To: Alexander Graf <agraf@suse.de>
Cc: Paul Brook <paul@codesourcery.com>, qemu-devel@nongnu.org

On Mon, 5 Apr 2010, Alexander Graf wrote:

> 
> On 05.04.2010, at 14:41, malc wrote:
> 
> > On Mon, 5 Apr 2010, Paul Brook wrote:
> > 
> >> I think I got all the tcg backend bits right, but can't test most of them. Please test and report any problems.
> >> 
> >> Historically the qemu tlb "addend" field was used for both RAM and IO accesses,
> >> so needed to be able to hold both host addresses (unsigned long) and guest
> >> physical addresses (target_phys_addr_t).  However since the introduction of
> >> the iotlb field it has only been used for RAM accesses.
> >> 
> >> This means we can change the type of addend to unsigned long, and remove
> >> associated hacks in the big-endian TCG backends.
> >> 
> >> We can also remove the host dependence from target_phys_addr_t.
> >> 
> >> Signed-off-by: Paul Brook <paul@codesourcery.com>
> > 
> > PPC32 seems to be operational.
> > 
> > Alexander: Can you please test it a bit more thoroughly, my PPCs are a bit
> >           on the slow side.
> 
> Test what exactly? Booting random guests with TCG on PPC?

Booting 64 bit guests with 32 bit ppc hosts specifically.
[Testing whether 64bit host still works would be nice too, thanks]

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