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From: Carlo Nonato <carlo.nonato@minervasys.tech>
To: xen-devel@lists.xenproject.org
Cc: Carlo Nonato <carlo.nonato@minervasys.tech>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Bertrand Marquis <bertrand.marquis@arm.com>,
	Michal Orzel <michal.orzel@amd.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: [PATCH v7 11/14] xen/arm: use domain memory to allocate p2m page tables
Date: Fri, 15 Mar 2024 11:58:59 +0100	[thread overview]
Message-ID: <20240315105902.160047-12-carlo.nonato@minervasys.tech> (raw)
In-Reply-To: <20240315105902.160047-1-carlo.nonato@minervasys.tech>

Cache colored domains can benefit from having p2m page tables allocated
with the same coloring schema so that isolation can be achieved also for
those kind of memory accesses.
In order to do that, the domain struct is passed to the allocator and the
MEMF_no_owner flag is used.

This will be useful also when NUMA will be supported on Arm.

Signed-off-by: Carlo Nonato <carlo.nonato@minervasys.tech>
Acked-by: Julien Grall <julien@xen.org>
---
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 b/xen/arch/arm/mmu/p2m.c
index 41fcca011c..d02a478cb8 100644
--- a/xen/arch/arm/mmu/p2m.c
+++ b/xen/arch/arm/mmu/p2m.c
@@ -32,7 +32,7 @@ static struct page_info *p2m_alloc_page(struct domain *d)
      */
     if ( is_hardware_domain(d) )
     {
-        pg = alloc_domheap_page(NULL, 0);
+        pg = alloc_domheap_page(d, MEMF_no_owner);
         if ( pg == NULL )
             printk(XENLOG_G_ERR "Failed to allocate P2M pages for hwdom.\n");
     }
@@ -81,7 +81,7 @@ int p2m_set_allocation(struct domain *d, unsigned long pages, bool *preempted)
         if ( d->arch.paging.p2m_total_pages < pages )
         {
             /* Need to allocate more memory from domheap */
-            pg = alloc_domheap_page(NULL, 0);
+            pg = alloc_domheap_page(d, MEMF_no_owner);
             if ( pg == NULL )
             {
                 printk(XENLOG_ERR "Failed to allocate P2M pages.\n");
-- 
2.34.1



  parent reply	other threads:[~2024-03-15 10:59 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-15 10:58 [PATCH v7 00/14] Arm cache coloring Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 01/14] xen/common: add cache coloring common code Carlo Nonato
2024-03-15 11:39   ` Carlo Nonato
2024-03-19 14:58   ` Jan Beulich
2024-03-21 15:03     ` Carlo Nonato
2024-03-21 15:53       ` Jan Beulich
2024-03-21 17:22         ` Carlo Nonato
2024-03-22  7:25           ` Jan Beulich
2024-03-15 10:58 ` [PATCH v7 02/14] xen/arm: add initial support for LLC coloring on arm64 Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 03/14] xen/arm: permit non direct-mapped Dom0 construction Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 04/14] xen/arm: add Dom0 cache coloring support Carlo Nonato
2024-03-19 15:30   ` Jan Beulich
2024-03-21 15:04     ` Carlo Nonato
2024-03-21 15:57       ` Jan Beulich
2024-03-21 17:31         ` Carlo Nonato
2024-03-22  7:26           ` Jan Beulich
2024-03-27 11:39             ` Carlo Nonato
2024-03-27 11:56               ` Julien Grall
2024-04-05  0:20                 ` Stefano Stabellini
2024-03-27 11:57               ` Michal Orzel
2024-03-19 15:45   ` Jan Beulich
2024-03-15 10:58 ` [PATCH v7 05/14] xen: extend domctl interface for cache coloring Carlo Nonato
2024-03-19 15:37   ` Jan Beulich
2024-03-21 15:11     ` Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 06/14] tools: add support for cache coloring configuration Carlo Nonato
2024-03-25 10:55   ` Anthony PERARD
2024-03-25 11:44     ` Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 07/14] xen/arm: add support for cache coloring configuration via device-tree Carlo Nonato
2024-03-19 15:41   ` Jan Beulich
2024-03-21 15:12     ` Carlo Nonato
2024-03-15 10:58 ` [PATCH v7 08/14] xen/page_alloc: introduce preserved page flags macro Carlo Nonato
2024-03-19 15:47   ` Jan Beulich
2024-03-21 16:07   ` Julien Grall
2024-03-21 16:10     ` Julien Grall
2024-03-21 16:22       ` Jan Beulich
2024-03-22 15:07         ` Carlo Nonato
2024-03-25  7:19           ` Jan Beulich
2024-03-26 16:39             ` Carlo Nonato
2024-03-26 17:04               ` Jan Beulich
2024-03-26 21:55                 ` Julien Grall
2024-03-27 11:10                   ` Carlo Nonato
2024-03-27 13:28                     ` Julien Grall
2024-03-27 13:38                       ` Jan Beulich
2024-03-27 13:48                         ` Julien Grall
2024-03-28 18:21                           ` Julien Grall
2024-03-15 10:58 ` [PATCH v7 09/14] xen/page_alloc: introduce page flag to stop buddy merging Carlo Nonato
2024-03-19 15:49   ` Jan Beulich
2024-03-15 10:58 ` [PATCH v7 10/14] xen: add cache coloring allocator for domains Carlo Nonato
2024-03-19 16:43   ` Jan Beulich
2024-03-21 15:36     ` Carlo Nonato
2024-03-21 16:03       ` Jan Beulich
2024-03-15 10:58 ` Carlo Nonato [this message]
2024-03-15 10:59 ` [PATCH v7 12/14] xen/arm: add Xen cache colors command line parameter Carlo Nonato
2024-03-19 15:54   ` Jan Beulich
2024-03-21 15:36     ` Carlo Nonato
2024-03-15 10:59 ` [PATCH v7 13/14] xen/arm: make consider_modules() available for xen relocation Carlo Nonato
2024-03-15 10:59 ` [PATCH v7 14/14] xen/arm: add cache coloring support for Xen Carlo Nonato
2024-03-19 15:58   ` Jan Beulich
2024-03-19 16:15     ` Jan Beulich
2024-03-19 16:03   ` Jan Beulich

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