Hi, Peter, Gerd,
On Tue, Aug 24, 2021 at 02:01:53PM +0200, Gerd Hoffmann wrote:
> Hi,
>
> > I was vaguely tossing an idea around in the back of my mind
> > about whether you could have a flag on devices that marked
> > them as "this device is currently involved in IO", such that
> > you could
On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
> On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
> wrote:
> >
> > This series aim to kill a recent class of bug, the infamous
> > "DMA reentrancy" issues found by Alexander while fuzzing.
> >
> > Introduce the 'bus_perm' field
Gerd Hoffmann 于2021年8月24日周二 下午8:02写道：
>
> Hi,
>
> > I was vaguely tossing an idea around in the back of my mind
> > about whether you could have a flag on devices that marked
> > them as "this device is currently involved in IO", such that
> > you could then just fail the last DMA (or
Hi,
> I was vaguely tossing an idea around in the back of my mind
> about whether you could have a flag on devices that marked
> them as "this device is currently involved in IO", such that
> you could then just fail the last DMA (or qemu_irq_set, or
> whatever) that would complete the loop
On Mon, 23 Aug 2021 at 21:50, Peter Xu wrote:
>
> On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
> > On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
> > wrote:
> > >
> > > This series aim to kill a recent class of bug, the infamous
> > > "DMA reentrancy" issues found by
On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
> On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
> wrote:
> >
> > This series aim to kill a recent class of bug, the infamous
> > "DMA reentrancy" issues found by Alexander while fuzzing.
> >
> > Introduce the 'bus_perm' field
On Mon, Aug 23, 2021 at 06:41:52PM +0200, Philippe Mathieu-Daudé wrote:
> This series aim to kill a recent class of bug, the infamous
> "DMA reentrancy" issues found by Alexander while fuzzing.
>
> Introduce the 'bus_perm' field in MemTxAttrs, defining 3 bits:
>
> - MEMTXPERM_UNSPECIFIED
On 8/24/21 12:26 AM, Alexander Bulekov wrote:
> On 210823 1650, Peter Xu wrote:
>> On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
>>> On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
>>> wrote:
This series aim to kill a recent class of bug, the infamous
"DMA
On 210823 1650, Peter Xu wrote:
> On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
> > On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
> > wrote:
> > >
> > > This series aim to kill a recent class of bug, the infamous
> > > "DMA reentrancy" issues found by Alexander while
On Mon, Aug 23, 2021 at 08:10:50PM +0100, Peter Maydell wrote:
> On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé
> wrote:
> >
> > This series aim to kill a recent class of bug, the infamous
> > "DMA reentrancy" issues found by Alexander while fuzzing.
> >
> > Introduce the 'bus_perm' field
On Mon, 23 Aug 2021 at 17:42, Philippe Mathieu-Daudé wrote:
>
> This series aim to kill a recent class of bug, the infamous
> "DMA reentrancy" issues found by Alexander while fuzzing.
>
> Introduce the 'bus_perm' field in MemTxAttrs, defining 3 bits:
>
> - MEMTXPERM_UNSPECIFIED (current default,
This series aim to kill a recent class of bug, the infamous
"DMA reentrancy" issues found by Alexander while fuzzing.
Introduce the 'bus_perm' field in MemTxAttrs, defining 3 bits:
- MEMTXPERM_UNSPECIFIED (current default, unchanged behavior)
- MEMTXPERM_UNRESTRICTED (allow list approach)
-
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