Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-05 Thread Jan Beulich
>>> On 02.03.18 at 20:34, wrote: > On 02/03/18 07:10, Jan Beulich wrote: > On 01.03.18 at 17:58, wrote: >>> The pont of having the toolchain put out optimised nops is to avoid the >>> need for us to patch the site at all. I.e. calling

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-02 Thread Andrew Cooper
On 02/03/18 07:10, Jan Beulich wrote: On 01.03.18 at 17:58, wrote: >> On 01/03/18 10:54, Jan Beulich wrote: >> On 01.03.18 at 11:36, wrote: On Thu, Mar 01, 2018 at 12:28:27AM -0700, Jan Beulich wrote: Andrew Cooper

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-01 Thread Jan Beulich
>>> On 01.03.18 at 17:58, wrote: > On 01/03/18 10:54, Jan Beulich wrote: > On 01.03.18 at 11:36, wrote: >>> On Thu, Mar 01, 2018 at 12:28:27AM -0700, Jan Beulich wrote: >>> Andrew Cooper 02/28/18 7:20 PM >>>

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-01 Thread Andrew Cooper
On 01/03/18 10:54, Jan Beulich wrote: On 01.03.18 at 11:36, wrote: >> On Thu, Mar 01, 2018 at 12:28:27AM -0700, Jan Beulich wrote: >> Andrew Cooper 02/28/18 7:20 PM >>> On 28/02/18 16:22, Jan Beulich wrote: On 26.02.18 at

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-01 Thread Jan Beulich
>>> On 01.03.18 at 11:36, wrote: > On Thu, Mar 01, 2018 at 12:28:27AM -0700, Jan Beulich wrote: >> >>> Andrew Cooper 02/28/18 7:20 PM >>> >> >On 28/02/18 16:22, Jan Beulich wrote: >> > On 26.02.18 at 12:35, wrote:

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-03-01 Thread Roger Pau Monné
On Thu, Mar 01, 2018 at 12:28:27AM -0700, Jan Beulich wrote: > >>> Andrew Cooper 02/28/18 7:20 PM >>> > >On 28/02/18 16:22, Jan Beulich wrote: > > On 26.02.18 at 12:35, wrote: > >>> --- a/xen/include/asm-x86/alternative-asm.h > >>> +++

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-28 Thread Jan Beulich
>>> Andrew Cooper 02/28/18 7:20 PM >>> >On 28/02/18 16:22, Jan Beulich wrote: > On 26.02.18 at 12:35, wrote: >>> --- a/xen/include/asm-x86/alternative-asm.h >>> +++ b/xen/include/asm-x86/alternative-asm.h >>> @@ -1,6 +1,8 @@ >>> #ifndef

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-28 Thread Andrew Cooper
On 28/02/18 16:22, Jan Beulich wrote: On 26.02.18 at 12:35, wrote: >> Newer versions of binutils are capable of emitting an exact number bytes >> worth >> of optimised nops. Use this in preference to .skip when available. >> >> Signed-off-by: Andrew Cooper

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-28 Thread Jan Beulich
>>> On 26.02.18 at 12:35, wrote: > Newer versions of binutils are capable of emitting an exact number bytes worth > of optimised nops. Use this in preference to .skip when available. > > Signed-off-by: Andrew Cooper In principle

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-26 Thread Roger Pau Monné
On Mon, Feb 26, 2018 at 01:08:05PM +, Andrew Cooper wrote: > On 26/02/18 12:31, Roger Pau Monné wrote: > > On Mon, Feb 26, 2018 at 11:35:04AM +, Andrew Cooper wrote: > >> Newer versions of binutils are capable of emitting an exact number bytes > >> worth > >> of optimised nops. Use this

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-26 Thread Andrew Cooper
On 26/02/18 12:31, Roger Pau Monné wrote: > On Mon, Feb 26, 2018 at 11:35:04AM +, Andrew Cooper wrote: >> Newer versions of binutils are capable of emitting an exact number bytes >> worth >> of optimised nops. Use this in preference to .skip when available. >> >> Signed-off-by: Andrew Cooper

Re: [Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-26 Thread Roger Pau Monné
On Mon, Feb 26, 2018 at 11:35:04AM +, Andrew Cooper wrote: > Newer versions of binutils are capable of emitting an exact number bytes worth > of optimised nops. Use this in preference to .skip when available. > > Signed-off-by: Andrew Cooper > --- > CC: Jan

[Xen-devel] [PATCH v2 7/7] x86/build: Use new .nop directive when available

2018-02-26 Thread Andrew Cooper
Newer versions of binutils are capable of emitting an exact number bytes worth of optimised nops. Use this in preference to .skip when available. Signed-off-by: Andrew Cooper --- CC: Jan Beulich CC: Konrad Rzeszutek Wilk