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Re: [Qemu-devel] [PATCH v1 1/1] configure: Add RISC-V host support

From: Alistair Francis
Subject: Re: [Qemu-devel] [PATCH v1 1/1] configure: Add RISC-V host support
Date: Mon, 30 Jul 2018 10:24:21 -0700

On Sun, Jul 29, 2018 at 4:28 AM, Peter Maydell <address@hidden> wrote:
> On 28 July 2018 at 17:36, Richard Henderson
> <address@hidden> wrote:
>> On 07/27/2018 04:49 PM, Alistair Francis wrote:
>>> Allow QEMU to be built to run on a RISC-V host.
>>> QEMU does not yet have a RISC-V TCG or user mode target port, but
>>> running other architectures on RISC-V using TCI does work.
>>> Signed-off-by: Alistair Francis <address@hidden>
>>> ---
>>>  configure | 18 +++++++++++++++++-
>>>  1 file changed, 17 insertions(+), 1 deletion(-)
>> This is ok as far as it goes.
>> Even for TCI, you need some more.
>> At minimum, see Michael Clark's branch changes to accel/tcg/user-exec.c for
>> host signal handling.  While you can run *-softmmu without this, none of
>> *-linux-user will work reliably.
>> Another piece that even Michael Clark does not have is
>> linux-user/host/*/safe-syscall.S.
> It might be nice to complete the safe-syscall stuff for all hosts,
> and then remove the fallback that lets you build an unreliable
> linux-user binary without it...

At the moment though QEMU won't build with Linux user. So some work is
required just to get the build working.


> thanks
> -- PMM

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