Re: [Xen-devel] [PATCH 1/2] xen: add a global indicator for grant copy being available

2017-09-22 Thread Juergen Gross
On 20/09/17 16:53, Anthony PERARD wrote: > On Tue, Sep 19, 2017 at 01:50:54PM +0200, Juergen Gross wrote: >> The Xen qdisk backend needs to test whether grant copy operations is >> available in the kernel. Unfortunately this collides with using >> xengnttab_set_max_grants() on some kernels as this

Re: [Xen-devel] [PATCH 1/2] xen: add a global indicator for grant copy being available

2017-09-20 Thread Anthony PERARD
On Tue, Sep 19, 2017 at 01:50:54PM +0200, Juergen Gross wrote: > The Xen qdisk backend needs to test whether grant copy operations is > available in the kernel. Unfortunately this collides with using > xengnttab_set_max_grants() on some kernels as this operation has to > be the first one after open

[Xen-devel] [PATCH 1/2] xen: add a global indicator for grant copy being available

2017-09-19 Thread Juergen Gross
The Xen qdisk backend needs to test whether grant copy operations is available in the kernel. Unfortunately this collides with using xengnttab_set_max_grants() on some kernels as this operation has to be the first one after opening the gnttab device. In order to solve this problem test for the ava