On Mon, Aug 07, 2023 at 06:48:13PM +0100, Julien Grall wrote:
> Hi Alex,
>
> One more remark in the title. s/HAS// as you renamed the Kconfig.
>
> [snip]
>
> --
> Julien Grall
Oops. Good catch, cheers.
On 07.08.2023 18:06, Alejandro Vallejo wrote:
> An alt-patching series can probably make it very close to the perf win of
> this patch as long as it transforms the conversion hunks into no-ops when
> there's no hole. I looked into the 2018 patch, and I don't think it tried
> to go that far (afaics
Hi Alex,
One more remark in the title. s/HAS// as you renamed the Kconfig.
On 28/07/2023 08:59, Alejandro Vallejo wrote:
Adds a new compile-time flag to allow disabling pdx compression and
compiles out compression-related code/data. It also shorts the pdx<->pfn
conversion macros and creates stu
Hi,
A few days have passed. May I suggest taking a step back?
On Tue, Aug 01, 2023 at 09:57:57AM +0200, Jan Beulich wrote:
> On 31.07.2023 19:38, Andrew Cooper wrote:
> > There's one system which never made its way into production,
> > support-for-which in the no-op case is causing a 10% perf hit
On 31.07.2023 19:38, Andrew Cooper wrote:
> On 31/07/2023 9:00 am, Jan Beulich wrote:
>> On 28.07.2023 18:58, Andrew Cooper wrote:
>>> On 28/07/2023 5:36 pm, Andrew Cooper wrote:
On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
> Adds a new compile-time flag to allow disabling pdx compressi
On 31/07/2023 9:00 am, Jan Beulich wrote:
> On 28.07.2023 18:58, Andrew Cooper wrote:
>> On 28/07/2023 5:36 pm, Andrew Cooper wrote:
>>> On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
Adds a new compile-time flag to allow disabling pdx compression and
compiles out compression-related cod
On 28.07.2023 09:59, Alejandro Vallejo wrote:
> --- a/xen/common/pdx.c
> +++ b/xen/common/pdx.c
> @@ -31,11 +31,15 @@ unsigned long __read_mostly pdx_group_valid[BITS_TO_LONGS(
>
> bool __mfn_valid(unsigned long mfn)
> {
> -if ( unlikely(evaluate_nospec(mfn >= max_page)) )
> +bool inval
On 28/07/2023 17:36, Andrew Cooper wrote:
On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
Adds a new compile-time flag to allow disabling pdx compression and
compiles out compression-related code/data. It also shorts the pdx<->pfn
conversion macros and creates stubs for masking fucntions.
Wh
On 28.07.2023 18:58, Andrew Cooper wrote:
> On 28/07/2023 5:36 pm, Andrew Cooper wrote:
>> On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
>>> Adds a new compile-time flag to allow disabling pdx compression and
>>> compiles out compression-related code/data. It also shorts the pdx<->pfn
>>> convers
On 28/07/2023 5:36 pm, Andrew Cooper wrote:
> On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
>> Adds a new compile-time flag to allow disabling pdx compression and
>> compiles out compression-related code/data. It also shorts the pdx<->pfn
>> conversion macros and creates stubs for masking fucntio
On 28/07/2023 8:59 am, Alejandro Vallejo wrote:
> Adds a new compile-time flag to allow disabling pdx compression and
> compiles out compression-related code/data. It also shorts the pdx<->pfn
> conversion macros and creates stubs for masking fucntions.
>
> While at it, removes the old arch-defined
Hi,
On 28/07/2023 08:59, Alejandro Vallejo wrote:
diff --git a/xen/include/xen/pdx.h b/xen/include/xen/pdx.h
index 5a82b6bde2..dfb475c8dc 100644
--- a/xen/include/xen/pdx.h
+++ b/xen/include/xen/pdx.h
@@ -67,8 +67,6 @@
* region involved.
*/
-#ifdef CONFIG_HAS_PDX
-
extern unsigned lo
Adds a new compile-time flag to allow disabling pdx compression and
compiles out compression-related code/data. It also shorts the pdx<->pfn
conversion macros and creates stubs for masking fucntions.
While at it, removes the old arch-defined CONFIG_HAS_PDX flag, as it was
not removable in practice
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