Re: [Xen-devel] [PATCH v4 7/7] xen/arm: disable CPUs with different dcache line sizes

2018-03-06 Thread Stefano Stabellini
On Tue, 6 Mar 2018, Julien Grall wrote: > Hi Stefano, > > Something is wrong with your threading again. Patch #2-7 have "In-Reply-To" > matching patch #1 and not the cover letter. Thanks, I lost my git configuration. > On 02/03/18 19:06, Stefano Stabellini wrote: > > Even different cpus in big.

Re: [Xen-devel] [PATCH v4 7/7] xen/arm: disable CPUs with different dcache line sizes

2018-03-06 Thread Julien Grall
Hi Stefano, Something is wrong with your threading again. Patch #2-7 have "In-Reply-To" matching patch #1 and not the cover letter. On 02/03/18 19:06, Stefano Stabellini wrote: Even different cpus in big.LITTLE systems are expected to have the same dcache line size. Unless the minimum of all

[Xen-devel] [PATCH v4 7/7] xen/arm: disable CPUs with different dcache line sizes

2018-03-02 Thread Stefano Stabellini
Even different cpus in big.LITTLE systems are expected to have the same dcache line size. Unless the minimum of all dcache line sizes is used across all cpu cores, cache coherency protocols can go wrong. Instead, for now, just disable any cpu with a different dcache line size. This check is not co