On Tue, Nov 07, 2017 at 02:40:37AM +, Mathieu Desnoyers wrote:
> - On Nov 6, 2017, at 9:07 PM, Boqun Feng boqun.f...@gmail.com wrote:
>
> > On Mon, Nov 06, 2017 at 03:56:38PM -0500, Mathieu Desnoyers wrote:
> > [...]
> >> +static int cpu_op_pin_pages(unsigned long addr, unsigned long len,
- On Nov 6, 2017, at 9:07 PM, Boqun Feng boqun.f...@gmail.com wrote:
> On Mon, Nov 06, 2017 at 03:56:38PM -0500, Mathieu Desnoyers wrote:
> [...]
>> +static int cpu_op_pin_pages(unsigned long addr, unsigned long len,
>> +struct page ***pinned_pages_ptr, size_t *nr_pinned,
>> +
On Mon, Nov 06, 2017 at 03:56:38PM -0500, Mathieu Desnoyers wrote:
[...]
> +static int cpu_op_pin_pages(unsigned long addr, unsigned long len,
> + struct page ***pinned_pages_ptr, size_t *nr_pinned,
> + int write)
> +{
> + struct page *pages[2];
> + int ret, nr_pages
This new cpu_opv system call executes a vector of operations on behalf
of user-space on a specific CPU with preemption disabled. It is inspired
from readv() and writev() system calls which take a "struct iovec" array
as argument.
The operations available are: comparison, memcpy, add, or, and, xor,
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