Re: [Xen-devel] [PATCH] arm/monitor: flush the icache during SMC traps

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 27/01/2017 19:27, Stefano Stabellini wrote:
> On Thu, 26 Jan 2017, Tamas K Lengyel wrote:
> > On Thu, Jan 26, 2017 at 10:54 AM, Tamas K Lengyel
> > <tamas.lengyel@xxxxxxxxxxxx> wrote:
> > > On Thu, Jan 26, 2017 at 4:30 AM, Julien Grall <julien.grall@xxxxxxx> wrote:
> > So according to the manual (C5.3.9-10) IALLU and IALLUIS are not
> > available from EL0. IVAU can be enabled to execute in EL0; however on
> > my 4.1 kernel it generates a permission fault. I'm also not sure if
> > IVAU would actually be a solution.
> I think there is a Linux syscall available for this kind of things,
> called cacheflush. See arch/arm/kernel/traps.c:arm_syscall.
The cacheflush system is only implement on ARM32. And even thought, we 
have a domctl cacheflush for this purpose.
Cheers,

--
Julien Grall

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel