Re: [Qemu-devel] Torn read/write possible on aarch64/x86-64 MTTCG?

2017-07-26 Thread Alex Bennée
Andrew Baumann writes: >> From: Richard Henderson [mailto:rth7...@gmail.com] On Behalf Of Richard >> Henderson >> Sent: Monday, 24 July 2017 15:03 >> >> On 07/24/2017 02:23 PM, Emilio G. Cota wrote: >> > (Adding some Cc's) >> > >> > On Mon, Jul 24, 2017 at 19:05:33 +, Andrew Baumann via Qemu

Re: [Qemu-devel] Torn read/write possible on aarch64/x86-64 MTTCG?

2017-07-25 Thread Andrew Baumann via Qemu-devel
> From: Richard Henderson [mailto:rth7...@gmail.com] On Behalf Of Richard > Henderson > Sent: Monday, 24 July 2017 15:03 > > On 07/24/2017 02:23 PM, Emilio G. Cota wrote: > > (Adding some Cc's) > > > > On Mon, Jul 24, 2017 at 19:05:33 +, Andrew Baumann via Qemu-devel > wrote: > >> Hi all, > >>

Re: [Qemu-devel] Torn read/write possible on aarch64/x86-64 MTTCG?

2017-07-24 Thread Richard Henderson
On 07/24/2017 02:23 PM, Emilio G. Cota wrote: (Adding some Cc's) On Mon, Jul 24, 2017 at 19:05:33 +, Andrew Baumann via Qemu-devel wrote: Hi all, I'm trying to track down what appears to be a translation bug in either the aarch64 target or x86_64 TCG (in multithreaded mode). The symptoms

Re: [Qemu-devel] Torn read/write possible on aarch64/x86-64 MTTCG?

2017-07-24 Thread Emilio G. Cota
(Adding some Cc's) On Mon, Jul 24, 2017 at 19:05:33 +, Andrew Baumann via Qemu-devel wrote: > Hi all, > > I'm trying to track down what appears to be a translation bug in either > the aarch64 target or x86_64 TCG (in multithreaded mode). The symptoms > are entirely consistent with a torn read/

[Qemu-devel] Torn read/write possible on aarch64/x86-64 MTTCG?

2017-07-24 Thread Andrew Baumann via Qemu-devel
Hi all, I'm trying to track down what appears to be a translation bug in either the aarch64 target or x86_64 TCG (in multithreaded mode). The symptoms are entirely consistent with a torn read/write -- that is, a 64-bit load or store that was translated to two 32-bit loads and stores -- but that