On Wed, Feb 10, 2016 at 11:39:05AM -0800, Luck, Tony wrote:
> On Wed, Feb 10, 2016 at 11:58:43AM +0100, Borislav Petkov wrote:
> > But one could take out that function do some microbenchmarking with
> > different sizes and once with the current version and once with the
> > pushes and pops of r1[2-
On Wed, Feb 10, 2016 at 11:58:43AM +0100, Borislav Petkov wrote:
> But one could take out that function do some microbenchmarking with
> different sizes and once with the current version and once with the
> pushes and pops of r1[2-5] to see where the breakeven is.
On a 4K page copy from a source a
On Tue, Feb 09, 2016 at 03:15:57PM -0800, Luck, Tony wrote:
> > You can save yourself this MOV here in what is, I'm assuming, the
> > general likely case where @src is aligned and do:
> >
> > /* check for bad alignment of source */
> > testl $7, %esi
> > /* already aligned?
> You can save yourself this MOV here in what is, I'm assuming, the
> general likely case where @src is aligned and do:
>
> /* check for bad alignment of source */
> testl $7, %esi
> /* already aligned? */
> jz 102f
>
> movl %esi,%ecx
> subl $8,%ecx
Am 07.02.2016 um 17:55 schrieb Borislav Petkov:
> due to those
>
>> + _ASM_EXTABLE_FAULT(0b,30b)
>> + _ASM_EXTABLE_FAULT(1b,31b)
>> + _ASM_EXTABLE_FAULT(2b,32b)
>> + _ASM_EXTABLE_FAULT(3b,33b)
>> + _ASM_EXTABLE_FAULT(4b,34b)
>
> things below and that's because ex_handler_fault
On Fri, Jan 08, 2016 at 01:18:03PM -0800, Tony Luck wrote:
> Make use of the EXTABLE_FAULT exception table entries. This routine
> returns a structure to indicate the result of the copy:
>
> struct mcsafe_ret {
> u64 trapnr;
> u64 remain;
> };
>
> If the copy is successful, then b
On Fri, Jan 08, 2016 at 01:18:03PM -0800, Tony Luck wrote:
> Make use of the EXTABLE_FAULT exception table entries. This routine
> returns a structure to indicate the result of the copy:
>
> struct mcsafe_ret {
> u64 trapnr;
> u64 remain;
> };
>
> If the copy is successful, then b
Make use of the EXTABLE_FAULT exception table entries. This routine
returns a structure to indicate the result of the copy:
struct mcsafe_ret {
u64 trapnr;
u64 remain;
};
If the copy is successful, then both 'trapnr' and 'remain' are zero.
If we faulted during the copy, then 'tra
8 matches
Mail list logo
