From: Marcelo Tosatti <mtosatti@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, kvm-devel <kvm@vger.kernel.org>
Subject: Re: file_ram_alloc: unify mem-path,mem-prealloc error handling
Date: Thu, 27 Feb 2014 22:05:57 -0300 [thread overview]
Message-ID: <20140228010557.GA12337@amt.cnet> (raw)
In-Reply-To: <530F8442.7090007@redhat.com>
On Thu, Feb 27, 2014 at 07:30:26PM +0100, Paolo Bonzini wrote:
> Il 04/02/2014 19:41, Marcelo Tosatti ha scritto:
> >
> >-mem-prealloc asks to preallocate memory residing on -mem-path path.
> >
> >Currently QEMU exits in case:
> >
> >- Memory file has been created but allocation via explicit write
> >fails.
> >
> >And it fallbacks to malloc in case:
> >- Querying huge page size fails.
> >- Lack of sync MMU support.
> >- Open fails.
> >- mmap fails.
> >
> >Have the same behaviour for all cases: fail in case -mem-path and
> >-mem-prealloc are specified for regions where the requested size is
> >suitable for hugepages.
> >
> >Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
>
> Once we introduce memdev, I believe -mem-path should always exit,
> and never fall back to malloc/MAP_ANON.
Agree.
next prev parent reply other threads:[~2014-02-28 14:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-04 18:41 file_ram_alloc: unify mem-path,mem-prealloc error handling Marcelo Tosatti
2014-02-04 18:43 ` Marcelo Tosatti
2014-02-07 8:39 ` Paolo Bonzini
2014-02-27 18:30 ` Paolo Bonzini
2014-02-28 1:05 ` Marcelo Tosatti [this message]
2014-02-28 12:55 ` [Qemu-devel] file_ram_alloc: unify mem-path, mem-prealloc " Igor Mammedov
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