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Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts |
Date: |
Tue, 20 Dec 2011 17:43:11 +0100 |
On 20.12.2011, at 17:33, Peter Maydell wrote:
> On 20 December 2011 16:29, Alexander Graf <address@hidden> wrote:
>> On 20.12.2011, at 17:17, Peter Maydell wrote:
>>> On 14 December 2011 01:43, Alexander Graf <address@hidden> wrote:
>>>> +unsigned long reserved_va = 0xf7000000;
>>>
>>> So why 0xf7000000 rather than the whole of the 32 bit space?
>>>
>>> (In particular for ARM targets we want to be able to mmap
>>> at 0xFFFFxxxx...)
>>
>> Because that didn't work for me. We still need the commpage
>> above our reserved memory range, so this was the highest value
>> that was safe for me.
>
> Hmm, that suggests we didn't get the interaction of the commpage
> with the reserved range right -- the commpage is part of the
> guest memory space so it should be OK for it to be inside
> the reserved range.
That is very likely. Right now we take the reserved range and then put the
commpage above it, not guaranteeing that nothing is there. I don't see what
other way to do it if we want to be able to reserve less than all 32 bits of
virtual address space (which might not be available!)
Alex
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, (continued)
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Alexander Graf, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Alexander Graf, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Alexander Graf, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/13
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Peter Maydell, 2011/12/20
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Alexander Graf, 2011/12/20
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Peter Maydell, 2011/12/20
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts,
Alexander Graf <=
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Peter Maydell, 2011/12/14
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/14
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Peter Maydell, 2011/12/14
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Paul Brook, 2011/12/14
- Re: [Qemu-devel] [PATCH] PPC: Fix linker scripts on ppc hosts, Peter Maydell, 2011/12/13