On 2020-11-09 8:03 a.m., Keith Busch wrote:
> On Fri, Nov 06, 2020 at 10:00:36AM -0700, Logan Gunthorpe wrote:
>> Allow userspace to obtain CMB memory by mmaping the controller's
>> char device. The mmap call allocates and returns a hunk of CMB memory,
>> (the offset is ignored) so userspace
On Fri, Nov 06, 2020 at 10:00:36AM -0700, Logan Gunthorpe wrote:
> Allow userspace to obtain CMB memory by mmaping the controller's
> char device. The mmap call allocates and returns a hunk of CMB memory,
> (the offset is ignored) so userspace does not have control over the
> address within the
On 2020-11-06 10:39 a.m., Jason Gunthorpe wrote:
> On Fri, Nov 06, 2020 at 10:00:36AM -0700, Logan Gunthorpe wrote:
>> Allow userspace to obtain CMB memory by mmaping the controller's
>> char device. The mmap call allocates and returns a hunk of CMB memory,
>> (the offset is ignored) so
On Fri, Nov 06, 2020 at 10:00:36AM -0700, Logan Gunthorpe wrote:
> Allow userspace to obtain CMB memory by mmaping the controller's
> char device. The mmap call allocates and returns a hunk of CMB memory,
> (the offset is ignored) so userspace does not have control over the
> address within the
Allow userspace to obtain CMB memory by mmaping the controller's
char device. The mmap call allocates and returns a hunk of CMB memory,
(the offset is ignored) so userspace does not have control over the
address within the CMB.
A VMA allocated in this way will only be usable by drivers that set
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