Hi Jan,
On Mon, May 6, 2024 at 2:22 PM Jan Beulich wrote:
>
> On 02.05.2024 18:55, Carlo Nonato wrote:
> > --- a/xen/common/page_alloc.c
> > +++ b/xen/common/page_alloc.c
> > @@ -159,6 +159,7 @@
> > #endif
> >
> > #define PGC_no_buddy_merge PGC_st
Hi Jan,
On Mon, May 6, 2024 at 2:01 PM Jan Beulich wrote:
>
> On 02.05.2024 18:55, Carlo Nonato wrote:
> > Add a command line parameter to allow the user to set the coloring
> > configuration for Dom0.
> > A common configuration syntax for cache colors is introduced and
Hi Jan,
On Mon, May 6, 2024 at 1:54 PM Jan Beulich wrote:
>
> On 02.05.2024 18:55, Carlo Nonato wrote:
> > --- a/xen/common/Kconfig
> > +++ b/xen/common/Kconfig
> > @@ -71,6 +71,9 @@ config HAS_IOPORTS
> > config HAS_KEXEC
> > bool
> >
&
mapping Dom0 isn't possible when coloring is enabled, so
CDF_directmap flag is removed when creating it.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8:
- added bound check on dom0_num_colors
- default colors array set just once
v7
also when NUMA will be supported on Arm.
Signed-off-by: Carlo Nonato
Acked-by: Julien Grall
---
v8:
- no changes
v7:
- no changes
v6:
- Carlo Nonato as the only signed-off-by
v5:
- new patch
---
xen/arch/arm/mmu/p2m.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/xen
the color
ranges.
Documentation is also added.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8:
- warn the user in case of coloring not supported at hypervisor level
v7:
- removed unneeded NULL check before xc_hypercall_b
Add the "llc-colors" Device Tree attribute to express DomUs and Dom0less
color configurations.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8:
- fixed memory leak on error path of domain_set_llc_colors_from_str()
- realloc co
rm32. Move it to mmu/setup.c and make it
non-static so that it can be used outside.
Signed-off-by: Carlo Nonato
---
v8:
- patch adapted to new changes to consider_modules()
v7:
- moved consider_modules() to arm/mmu/setup.c
v6:
- new patch
---
xen/arch/arm/arm32/mmu/mm.c
of colors that fit in a 4 KiB page when integers
are 4 bytes long.
LLC colors are a property of the domain, so struct domain has to be extended.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8:
- minor documentation fixes
- "llc-col
the static-mem feature.
The solution has been tested in several scenarios, including Xilinx Zynq
MPSoCs.
Carlo Nonato (12):
xen/common: add cache coloring common code
xen/arm: add initial support for LLC coloring on arm64
xen/arm: permit non direct-mapped Dom0 construction
xen/arm: add
function.
Based on original work from: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
v8:
- requests that uses MEMF_* flags that can't be served are now going to fail
- free_color_heap_page() is called directly from free_heap_pages()
v7:
- requests
emporarily available for relocation.
This implies that Xen protection must happen after the copy.
Finally, since the alternative framework needs to remap the Xen text and
inittext sections, this operation must be done in a coloring-aware way.
The function xen_remap_colored() is introduced for that.
partitions a cache memory that is already private, i.e.
underutilize it.
Signed-off-by: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
v8:
- added bound check on xen_colors in llc_coloring_init()
v7:
- removed XEN_DEFAULT_COLOR
- XEN_DEFAULT_NUM_COLORS is now used
it
in Dom0 construction bring it back to domain_build.c and declare it in
domain_build.h.
Take the opportunity to adapt the implementation of allocate_memory() so
that it uses the host layout when called on the hwdom, via
find_unallocated_memory().
Signed-off-by: Carlo Nonato
---
v8:
- patch adap
allocation and cache coloring are incompatible because static
memory can't be guaranteed to use only colors assigned to the domain.
Panic during DomUs creation when both are enabled.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8
before freeing new pages as this is
considered an error and can cause ASSERT violations.
Signed-off-by: Carlo Nonato
---
v8:
- fixed PGC_extra ASSERT fail in alloc_domheap_pages() by removing PGC_extra
before freeing
v7:
- PGC_preserved used also in mark_page_free()
v6:
- preserved_flags renamed
Add a new domctl hypercall to allow the user to set LLC coloring
configurations. Colors can be set only once, just after domain creation,
since recoloring isn't supported.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v8:
- fixed memory
Hi guys,
On Fri, Mar 22, 2024 at 8:26 AM Jan Beulich wrote:
>
> On 21.03.2024 18:31, Carlo Nonato wrote:
> > On Thu, Mar 21, 2024 at 4:57 PM Jan Beulich wrote:
> >>
> >> On 21.03.2024 16:04, Carlo Nonato wrote:
> >>> On Tue, Mar 19, 2024 at 4:30 PM Jan
Hi guys,
> Question is: How would you justify such a change? IOW I'm not convinced
> (yet) this wants doing there.
You mean in this series?
> Looking at the code, the flag is originally set in
> alloc_domheap_pages(). So I guess it would make sense to do it in
> free_domheap_pages().
We don't
Hi Jan,
On Mon, Mar 25, 2024 at 8:19 AM Jan Beulich wrote:
>
> On 22.03.2024 16:07, Carlo Nonato wrote:
> > Hi guys,
> >
> > On Thu, Mar 21, 2024 at 5:23 PM Jan Beulich wrote:
> >>
> >> On 21.03.2024 17:10, Julien Grall wrote:
> >>> On 21/0
Hi Anthony,
On Mon, Mar 25, 2024 at 11:55 AM Anthony PERARD
wrote:
>
> On Fri, Mar 15, 2024 at 11:58:54AM +0100, Carlo Nonato wrote:
> > diff --git a/tools/libs/light/libxl_create.c
> > b/tools/libs/light/libxl_create.c
> > index 5546335973..79f206f616 100644
&g
Hi guys,
On Thu, Mar 21, 2024 at 5:23 PM Jan Beulich wrote:
>
> On 21.03.2024 17:10, Julien Grall wrote:
> > On 21/03/2024 16:07, Julien Grall wrote:
> >> On 15/03/2024 10:58, Carlo Nonato wrote:
> >>> PGC_static and PGC_extra needs to be preserved when assigning
On Thu, Mar 21, 2024 at 4:57 PM Jan Beulich wrote:
>
> On 21.03.2024 16:04, Carlo Nonato wrote:
> > On Tue, Mar 19, 2024 at 4:30 PM Jan Beulich wrote:
> >> On 15.03.2024 11:58, Carlo Nonato wrote:
> >>> --- a/docs/misc/xen-command-line.pandoc
> >>
Hi Jan,
On Thu, Mar 21, 2024 at 4:53 PM Jan Beulich wrote:
>
> On 21.03.2024 16:03, Carlo Nonato wrote:
> > On Tue, Mar 19, 2024 at 3:58 PM Jan Beulich wrote:
> >> On 15.03.2024 11:58, Carlo Nonato wrote:
> >>> --- a/docs/misc/xen-command-line.pandoc
Hi Jan,
On Tue, Mar 19, 2024 at 5:43 PM Jan Beulich wrote:
>
> On 15.03.2024 11:58, Carlo Nonato wrote:
> > Add a new memory page allocator that implements the cache coloring
> > mechanism.
> > The allocation algorithm enforces equal frequency distribution of cache
&
Hi Jan
On Tue, Mar 19, 2024 at 4:54 PM Jan Beulich wrote:
>
> On 15.03.2024 11:59, Carlo Nonato wrote:
> > From: Luca Miccio
> >
> > Add a new command line parameter to configure Xen cache colors.
> > These colors can be dumped with the cache coloring info debu
Hi Jan,
On Tue, Mar 19, 2024 at 4:41 PM Jan Beulich wrote:
>
> On 15.03.2024 11:58, Carlo Nonato wrote:
> > --- a/xen/common/llc-coloring.c
> > +++ b/xen/common/llc-coloring.c
> > @@ -253,6 +253,37 @@ int domain_set_llc_colors(struct domain *d,
> > return
Hi Jan,
On Tue, Mar 19, 2024 at 4:37 PM Jan Beulich wrote:
>
> On 15.03.2024 11:58, Carlo Nonato wrote:
> > @@ -219,6 +220,39 @@ void domain_llc_coloring_free(struct domain *d)
> > xfree(__va(__pa(d->llc_colors)));
> > }
> >
> > +int
Hi Jan,
On Tue, Mar 19, 2024 at 4:30 PM Jan Beulich wrote:
>
> On 15.03.2024 11:58, Carlo Nonato wrote:
> > --- a/docs/misc/xen-command-line.pandoc
> > +++ b/docs/misc/xen-command-line.pandoc
> > @@ -963,6 +963,15 @@ Controls for the dom0 IOMMU setup.
> >
&
Hi Jan,
(adding Andrea Bastoni in cc)
On Tue, Mar 19, 2024 at 3:58 PM Jan Beulich wrote:
>
> On 15.03.2024 11:58, Carlo Nonato wrote:
> > +Background
> > +**
> > +
> > +Cache hierarchy of a modern multi-core CPU typically has first levels
> > dedi
Hi all,
unfortunately, this patch doesn't apply cleanly to the latest master.
The conflict is very small: just a reordering of two lines in
xen/common/Kconfig. Should I resend the whole series?
Thanks.
On Fri, Mar 15, 2024 at 11:59 AM Carlo Nonato
wrote:
>
> Last Level Cache (LLC) co
it. The default amount of Xen colors is thus set to one.
Signed-off-by: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
v7:
- removed XEN_DEFAULT_COLOR
- XEN_DEFAULT_NUM_COLORS is now used in a for loop to set xen default colors
---
docs/misc/cache-coloring.rst | 2
rm32. Move it to mmu/setup.c and make it
non-static so that it can be used outside.
Signed-off-by: Carlo Nonato
---
v7:
- moved consider_modules() to arm/mmu/setup.c
v6:
- new patch
---
xen/arch/arm/arm32/mmu/mm.c | 93 +--
xen/arch/arm/include/asm/setup.h | 3 +
xe
also when NUMA will be supported on Arm.
Signed-off-by: Carlo Nonato
Acked-by: Julien Grall
---
v7:
- no changes
v6:
- Carlo Nonato as the only signed-off-by
v5:
- new patch
---
xen/arch/arm/mmu/p2m.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/xen/arch/arm/mmu/p2m.c
Add the "llc-colors" Device Tree attribute to express DomUs and Dom0less
color configurations.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- removed alloc_colors() helper usage from domain_set_llc_colors_from_str()
v6:
PGC_static and PGC_extra needs to be preserved when assigning a page.
Define a new macro that groups those flags and use it instead of or'ing
every time.
To make preserved flags even more meaningful, they are kept also when
switching state in mark_page_free().
Signed-off-by: Carlo Nonato
---
v7
allocation and cache coloring are incompatible because static
memory can't be guaranteed to use only colors assigned to the domain.
Panic during DomUs creation when both are enabled.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- only
mapping Dom0 isn't possible when coloring is enabled, so
CDF_directmap flag is removed when creating it.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- parse_color_config() doesn't accept leading/trailing commas anymore
- removed
emporarily available for relocation.
This implies that Xen protection must happen after the copy.
Finally, since the alternative framework needs to remap the Xen text and
inittext sections, this operation must be done in a coloring-aware way.
The function xen_remap_colored() is introduced for that.
function.
Based on original work from: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
v7:
- requests to alloc_color_heap_page() now fail if MEMF_bits is used
v6:
- colored allocator functions are now static
v5:
- Carlo Nonato as the new author
- the colored allocator
the static-mem feature.
The solution has been tested in several scenarios, including Xilinx Zynq
MPSoCs.
Carlo Nonato (13):
xen/common: add cache coloring common code
xen/arm: add initial support for LLC coloring on arm64
xen/arm: permit non direct-mapped Dom0 construction
xen/arm: add
Add a new PGC_no_buddy_merge flag that prevents the buddy algorithm in
free_heap_pages() from merging pages that have it set. As of now, only
PGC_static has this feature, but future work can extend it easier than
before.
Signed-off-by: Carlo Nonato
---
v7:
- new patch
---
xen/common
the color
ranges.
Documentation is also added.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- removed unneeded NULL check before xc_hypercall_buffer_free() in
xc_domain_set_llc_colors()
v6:
- no edits
v5:
- added LIBXL_HAVE_BUILDINFO_
to be
extended.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- SUPPORT.md changes added to this patch
- extended documentation to better address applicability of cache coloring
- "llc-nr-ways" and "llc-size" params
Add a new domctl hypercall to allow the user to set LLC coloring
configurations. Colors can be set only once, just after domain creation,
since recoloring isn't supported.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v7:
- -EOPNOTSUPP
it
in Dom0 construction bring it back to domain_build.c and declare it in
domain_build.h.
Take the opportunity to adapt the implementation of allocate_memory() so
that it uses the host layout when called on the hwdom, via
find_unallocated_memory().
Signed-off-by: Carlo Nonato
---
v7:
- allocate_me
Hi Henry,
On Tue, Mar 12, 2024 at 4:25 AM Henry Wang wrote:
>
> Hi Michal,
>
> On 3/11/2024 9:46 PM, Michal Orzel wrote:
> > Hi Henry,
> >
> > diff --git a/xen/arch/arm/dom0less-build.c b/xen/arch/arm/dom0less-build.c
> > index 1e1c8d83ae..99447bfb0c 100644
> > ---
Hi Anthony,
On Wed, Feb 28, 2024 at 7:05 PM Anthony PERARD wrote:
>
> On Mon, Jan 29, 2024 at 06:18:02PM +0100, Carlo Nonato wrote:
> > diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h
> > index 2ef8b4e054..4b541fffd2 100644
> > --- a/tools/include/xenctrl.h
Hi Julien
On Tue, Feb 20, 2024 at 12:06 AM Julien Grall wrote:
>
> Hi,
>
> On 14/02/2024 13:52, Carlo Nonato wrote:
> > On Wed, Feb 14, 2024 at 11:14 AM Michal Orzel wrote:
> >>> diff --git a/xen/arch/arm/include/asm/processor.h
> >>> b/xen/ar
Hi Jan,
On Wed, Feb 14, 2024 at 8:55 AM Jan Beulich wrote:
>
> On 13.02.2024 18:29, Carlo Nonato wrote:
> > On Tue, Feb 13, 2024 at 4:25 PM Jan Beulich wrote:
> >> On 29.01.2024 18:18, Carlo Nonato wrote:
> >>> @@ -218,9 +230,44 @@ static void xen_pt_enforce_wnx
Hi Michal,
On Wed, Feb 14, 2024 at 11:14 AM Michal Orzel wrote:
>
> Hi Carlo,
>
> On 29/01/2024 18:17, Carlo Nonato wrote:
> >
> >
> > LLC coloring needs to know the last level cache layout in order to make the
> > best use of it. This can be probed by inspe
Hi Jan,
On Tue, Feb 13, 2024 at 4:25 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > @@ -218,9 +230,44 @@ static void xen_pt_enforce_wnx(void)
> > flush_xen_tlb_local();
> > }
> >
> > +static void __init create_llc_coloring_mappi
On Tue, Feb 6, 2024 at 12:51 PM Jan Beulich wrote:
>
> On 06.02.2024 12:46, Carlo Nonato wrote:
> > On Thu, Feb 1, 2024 at 2:51 PM Jan Beulich wrote:
> >> On 29.01.2024 18:18, Carlo Nonato wrote:
> >>> @@ -229,6 +230,30 @@ int __init dom0_set_llc_colors(st
Hi Jan,
On Thu, Feb 1, 2024 at 2:51 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > @@ -858,6 +859,16 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t)
> > u_domctl)
> > __HYPERVISOR_domctl, "h", u_domctl);
>
Hi Jan,
On Mon, Feb 5, 2024 at 1:38 PM Jan Beulich wrote:
>
> On 05.02.2024 12:59, Carlo Nonato wrote:
> > On Thu, Feb 1, 2024 at 4:53 PM Jan Beulich wrote:
> >> On 29.01.2024 18:18, Carlo Nonato wrote:
> >>> @@ -157,7 +158,11 @@
> >>> #define PG
Hi Jan,
On Thu, Feb 1, 2024 at 4:53 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > @@ -157,7 +158,11 @@
> > #define PGC_static 0
> > #endif
> >
> > -#define PGC_preserved (PGC_extra | PGC_static)
> > +#ifndef PGC_colo
Hi Jan,
On Mon, Feb 5, 2024 at 10:35 AM Jan Beulich wrote:
>
> On 03.02.2024 12:39, Carlo Nonato wrote:
> > On Thu, Feb 1, 2024 at 2:30 PM Jan Beulich wrote:
> >> On 29.01.2024 18:18, Carlo Nonato wrote:
> >>> --- a/xen/common/llc-coloring.c
> >>> +
Hi Jan,
On Thu, Feb 1, 2024 at 3:19 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > @@ -950,6 +951,11 @@ void __init create_domUs(void)
> > #endif
> > }
> >
> > +dt_property_read_st
Hi Jan,
On Thu, Feb 1, 2024 at 2:51 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > @@ -858,6 +859,16 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t)
> > u_domctl)
> > __HYPERVISOR_domctl, "h", u_domctl);
>
Hi Jan,
On Thu, Feb 1, 2024 at 2:30 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > Add a command line parameter to allow the user to set the coloring
> > configuration for Dom0.
> > A common configuration syntax for cache colors is introduced and
Hi Jan,
On Thu, Feb 1, 2024 at 1:18 PM Jan Beulich wrote:
>
> On 29.01.2024 18:17, Carlo Nonato wrote:
> > --- /dev/null
> > +++ b/docs/misc/cache-coloring.rst
> > @@ -0,0 +1,87 @@
> > +Xen cache coloring user guide
> > +=
> >
Hi Jan,
On Thu, Feb 1, 2024 at 1:59 PM Jan Beulich wrote:
>
> On 29.01.2024 18:17, Carlo Nonato wrote:
> > --- a/xen/arch/Kconfig
> > +++ b/xen/arch/Kconfig
> > @@ -31,3 +31,20 @@ config NR_NUMA_NODES
> > associated with multiple-nodes man
Hi Jan,
On Wed, Jan 31, 2024 at 4:57 PM Jan Beulich wrote:
>
> On 29.01.2024 18:17, Carlo Nonato wrote:
> > Last Level Cache (LLC) coloring allows to partition the cache in smaller
> > chunks called cache colors. Since not all architectures can actually
> > implement it
Hi Jan,
On Thu, Feb 1, 2024 at 3:24 PM Jan Beulich wrote:
>
> On 29.01.2024 18:18, Carlo Nonato wrote:
> > PGC_static and PGC_extra are flags that needs to be preserved when assigning
> > a page. Define a new macro that groups those flags and use it instead of
> > or'i
rm32. Move it back to setup.c and make it
non-static so that it can be used outside.
Signed-off-by: Carlo Nonato
---
v6:
- new patch
---
xen/arch/arm/arm32/mmu/mm.c | 93 +---
xen/arch/arm/include/asm/setup.h | 3 ++
xen/arch/arm/setup.c
without too much
headache, even if this means that they are using a suboptimal configuration
that includes shared colors.
- I don't know how to split #14 in smaller patches. I hope also not to have
misunderstood any comment there.
Carlo Nonato (14):
xen/common: add cache coloring common code
PGC_static and PGC_extra are flags that needs to be preserved when assigning
a page. Define a new macro that groups those flags and use it instead of
or'ing every time.
Signed-off-by: Carlo Nonato
---
v6:
- preserved_flags renamed to PGC_preserved
- PGC_preserved is used only in assign_pages
Signed-off-by: Carlo Nonato
---
v6:
- new patch
---
SUPPORT.md | 7 +++
1 file changed, 7 insertions(+)
diff --git a/SUPPORT.md b/SUPPORT.md
index a90d1108c9..f94569c862 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -363,6 +363,13 @@ by maintaining multiple physical to machine (p2m) memory
Add the "llc-colors" Device Tree attribute to express DomUs and Dom0less
color configurations.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6:
- rewrote domain_set_llc_colors_from_str() to be more explicit
v5:
- static-mem
Update the domctl interface to allow the user to set coloring configurations
from the toolstack.
Implement also the functionality for arm64.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6:
- reverted the XEN_DOMCTL_INTERFACE_VERSION
it
in Dom0 construction bring it back to domain_build.c and declare it in
domain_build.h.
Signed-off-by: Carlo Nonato
---
v6:
- new patch
---
xen/arch/arm/dom0less-build.c | 43 -
xen/arch/arm/domain_build.c | 50 +++--
xen/arch/arm/i
also when NUMA will be supported on Arm.
Signed-off-by: Carlo Nonato
Acked-by: Julien Grall
---
v6:
- Carlo Nonato as the only signed-off-by
v5:
- new patch
---
xen/arch/arm/mmu/p2m.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/xen/arch/arm/mmu/p2m.c b/xen/arch/arm
emporarily available for relocation.
This implies that Xen protection must happen after the copy.
Finally, since the alternative framework needs to remap the Xen text and
inittext sections, this operation must be done in a coloring-aware way.
The function xen_remap_colored() is introduced for that.
function.
Based on original work from: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
v6:
- colored allocator functions are now static
v5:
- Carlo Nonato as the new author
- the colored allocator balances color usage for each domain and it searches
linearly only
it. The default amount of Xen colors is thus set to one.
Signed-off-by: Luca Miccio
Signed-off-by: Marco Solieri
Signed-off-by: Carlo Nonato
---
docs/misc/xen-command-line.pandoc | 10 ++
xen/common/llc-coloring.c | 26 ++
2 files changed, 36 insertions
Introduce a new helper to initialize fields that have different uses for
free pages.
Signed-off-by: Carlo Nonato
---
v6:
- Carlo Nonato as the only signed-off-by
v5:
- new patch
---
xen/common/page_alloc.c | 16 +---
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/xen
the color
ranges.
Documentation is also added.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6:
- no edits
v5:
- added LIBXL_HAVE_BUILDINFO_LLC_COLORS
- moved color configuration in xc_domain_set_llc_colors() cause of the new
hypercall
v4:
to be
extended.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6:
- moved almost all code in common
- moved documentation in this patch
- reintroduced range for CONFIG_NR_LLC_COLORS
- reintroduced some stub functions to reduce the number
allocation and cache coloring are incompatible because static
memory can't be guaranteed to use only colors assigned to the domain.
Panic during DomUs creation when both are enabled.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6
mapping Dom0 isn't possible when coloring is enabled, so
CDF_directmap flag is removed when creating it.
Based on original work from: Luca Miccio
Signed-off-by: Carlo Nonato
Signed-off-by: Marco Solieri
---
v6:
- moved domain_llc_coloring_free() in this patch
- removed domain_alloc_colors() in favor
Hi Jan,
On Tue, Jan 9, 2024 at 11:33 AM Jan Beulich wrote:
>
> On 09.01.2024 11:28, Jan Beulich wrote:
> > On 02.01.2024 10:51, Carlo Nonato wrote:
> >> v5:
> >> - Carlo Nonato as the new author
> >> - the colored allocator balances color usag
Hi Julien,
On Tue, Jan 16, 2024 at 12:59 PM Julien Grall wrote:
>
> Hi,
>
> On 15/01/2024 16:16, Julien Grall wrote:
> > On 15/01/2024 15:43, Carlo Nonato wrote:
> >> Hi Julien,
> >
> > Hi Carlo,
> >
> >> On Mon, Jan 15, 2024 at 12:18 PM
Hi Julien
On Tue, Jan 16, 2024 at 3:37 PM Julien Grall wrote:
>
> From: Julien Grall
>
> In order to confirm the early boot code is self-contained, allocate a
> separate trampoline region for secondary to boot from it.
>
> Signed-off-by: Julien Grall
> ---
> xen/arch/arm/arm64/mmu/mm.c | 7
Hi Julien,
On Tue, Jan 16, 2024 at 12:55 PM Julien Grall wrote:
>
> From: Julien Grall
>
> In order to confirm the early boot code is self-contained, allocate a
> separate trampoline region for secondary to boot from it.
>
> Signed-off-by: Julien Grall
> ---
> xen/arch/arm/arm64/mmu/mm.c | 7
Hi Julien,
On Mon, Jan 15, 2024 at 5:16 PM Julien Grall wrote:
> On 15/01/2024 15:43, Carlo Nonato wrote:
> > Hi Julien,
>
> Hi Carlo,
>
> > On Mon, Jan 15, 2024 at 12:18 PM Julien Grall wrote:
> >> On 15/01/2024 10:11, Carlo Nonato wrote:
> >&g
Hi Julien,
On Mon, Jan 15, 2024 at 12:18 PM Julien Grall wrote:
> On 15/01/2024 10:11, Carlo Nonato wrote:
> > Hi Julien,
>
> Hi Carlo,
>
> > On Sun, Jan 14, 2024 at 8:22 PM Julien Grall wrote:
> >>
> >> Hi Carlo,
> >>
> >> On 13/01/2
Hi Jan,
On Tue, Jan 9, 2024 at 11:28 AM Jan Beulich wrote:
>
> On 02.01.2024 10:51, Carlo Nonato wrote:
> > This commit adds a new memory page allocator that implements the cache
> > coloring mechanism. The allocation algorithm enforces equal frequency
> > distribu
Hi Julien,
On Thu, Jan 11, 2024 at 11:44 AM Julien Grall wrote:
> On 11/01/2024 10:17, Carlo Nonato wrote:
> > Hi Julien,
>
> Hi Carlo,
>
> >>>> +bool __init llc_coloring_init(void)
> >>>> +{
> >>>&g
Hi Julien,
On Sun, Jan 14, 2024 at 8:22 PM Julien Grall wrote:
>
> Hi Carlo,
>
> On 13/01/2024 17:07, Carlo Nonato wrote:
> >>> diff --git a/xen/arch/arm/mmu/setup.c b/xen/arch/arm/mmu/setup.c
> >>> index 37b6d230ad..66b674eeab 100644
> >>> --- a/x
Hi Julien,
On Fri, Jan 5, 2024 at 8:12 PM Julien Grall wrote:
>
> Hi Carlo,
>
> On 02/01/2024 09:51, Carlo Nonato wrote:
> > This commit adds the cache coloring support for Xen own physical space.
> >
> > It extends the implementation of setup_pagetables() to make
Hi Jan,
On Mon, Jan 8, 2024 at 6:08 PM Jan Beulich wrote:
>
> On 02.01.2024 10:51, Carlo Nonato wrote:
> > PGC_static and PGC_extra are flags that needs to be preserved when assigning
> > a page. Define a new macro that groups those flags and use it instead of
>
Hi Jan,
On Tue, Jan 9, 2024 at 11:36 AM Jan Beulich wrote:
>
> On 02.01.2024 10:51, Carlo Nonato wrote:
> > Introduce a new helper to initialize fields that have different uses for
> > free pages.
> >
> > Signed-off-by: Carlo Nonato
> > Signed-off-by: Marco S
Hi Julien,
> > > +bool __init llc_coloring_init(void)
> > > +{
> > > +if ( !llc_way_size && !(llc_way_size = get_llc_way_size()) )
> > > +{
> > > +printk(XENLOG_ERR
> > > + "Probed LLC way size is 0 and no custom value
> > > provided\n");
> > > +return
Hi Jan,
On Mon, Jan 8, 2024 at 5:53 PM Jan Beulich wrote:
>
> On 02.01.2024 10:51, Carlo Nonato wrote:
> > This commit adds the Last Level Cache (LLC) coloring common header, Kconfig
> > options and functions. Since this is an arch specific feature, actual
> > imp
Hi Jan,
On Mon, Jan 8, 2024 at 5:40 PM Jan Beulich wrote:
>
> On 08.01.2024 17:31, Carlo Nonato wrote:
> > On Mon, Jan 8, 2024 at 4:32 PM Julien Grall wrote:
> >> On 08/01/2024 15:18, Carlo Nonato wrote:
> >>>> No. I am saying that that we should not be able
Hi Julien,
On Mon, Jan 8, 2024 at 4:32 PM Julien Grall wrote:
>
> Hi,
>
> On 08/01/2024 15:18, Carlo Nonato wrote:
> >> No. I am saying that that we should not be able to allow changing the
> >> colors after the memory has been allocated. To give an example, your
Hi Julien
On Mon, Jan 8, 2024 at 12:36 PM Julien Grall wrote:
>
> Hi Carlo,
>
> On 08/01/2024 11:19, Carlo Nonato wrote:
> > Hi Julien,
> >
> > On Mon, Jan 8, 2024 at 12:01 PM Julien Grall wrote:
> >>
> >> Hi Carlo,
> >>
> >>
On Mon, Jan 8, 2024 at 12:44 PM Julien Grall wrote:
>
>
>
> On 08/01/2024 11:04, Carlo Nonato wrote:
> > Hi Julien,
> >
> > On Mon, Jan 8, 2024 at 11:25 AM Julien Grall wrote:
> >>
> >> Hi Carlo,
> >>
> >> On 08/01/20
Hi Julien,
On Fri, Jan 5, 2024 at 7:20 PM Julien Grall wrote:
>
> Hi Carlo,
>
> On 02/01/2024 09:51, Carlo Nonato wrote:
> > This reverts commit 0c18fb76323bfb13615b6f13c98767face2d8097 (not clean).
> >
> > This is not a clean revert since t
Hi Julien,
On Fri, Jan 5, 2024 at 6:38 PM Julien Grall wrote:
>
> Hi Carlo,
>
> On 02/01/2024 09:51, Carlo Nonato wrote:
> > This commit adds the "llc-colors" Device Tree attribute that can be used
> > for DomUs and Dom0less color configurations. The syntax is
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