From: Elias El Yandouzi <eliasely@amazon.com>
To: <xen-devel@lists.xenproject.org>
Cc: <julien@xen.org>, <pdurrant@amazon.com>, <dwmw@amazon.com>,
"Elias El Yandouzi" <eliasely@amazon.com>
Subject: [PATCH V3 08/19] xen/x86: Add build assertion for fixmap entries
Date: Mon, 13 May 2024 11:11:06 +0000 [thread overview]
Message-ID: <20240513111117.68828-9-eliasely@amazon.com> (raw)
In-Reply-To: <20240513111117.68828-1-eliasely@amazon.com>
The early fixed addresses must all fit into the static L1 table.
Introduce a build assertion to this end.
Signed-off-by: Elias El Yandouzi <eliasely@amazon.com>
----
Changes in v2:
* New patch
diff --git a/xen/arch/x86/include/asm/fixmap.h b/xen/arch/x86/include/asm/fixmap.h
index a7ac365fc6..904bee0480 100644
--- a/xen/arch/x86/include/asm/fixmap.h
+++ b/xen/arch/x86/include/asm/fixmap.h
@@ -77,6 +77,11 @@ enum fixed_addresses {
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+static inline void fixaddr_build_assertion(void)
+{
+ BUILD_BUG_ON(FIX_PMAP_END > L1_PAGETABLE_ENTRIES - 1);
+}
+
extern void __set_fixmap(
enum fixed_addresses idx, unsigned long mfn, unsigned long flags);
--
2.40.1
next prev parent reply other threads:[~2024-05-13 11:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 11:10 [PATCH V3 00/19] Remove the directmap Elias El Yandouzi
2024-05-13 11:10 ` [PATCH V3 01/19] x86: Create per-domain mapping of guest_root_pt Elias El Yandouzi
2024-05-13 15:27 ` Roger Pau Monné
2024-05-14 8:03 ` Jan Beulich
2024-05-14 15:46 ` Alejandro Vallejo
2024-05-14 17:15 ` Elias El Yandouzi
2024-05-15 9:05 ` Roger Pau Monné
2024-05-13 11:11 ` [PATCH V3 02/19] x86/pv: Domheap pages should be mapped while relocating initrd Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 03/19] x86/pv: Rewrite how building PV dom0 handles domheap mappings Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 04/19] x86: Lift mapcache variable to the arch level Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 05/19] x86/mapcache: Initialise the mapcache for the idle domain Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 06/19] x86: Add a boot option to enable and disable the direct map Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 07/19] xen/x86: Add support for the PMAP Elias El Yandouzi
2024-05-13 11:11 ` Elias El Yandouzi [this message]
2024-05-13 11:11 ` [PATCH V3 09/19] x86/domain_page: Remove the fast paths when mfn is not in the directmap Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 10/19] xen/page_alloc: Add a path for xenheap when there is no direct map Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 11/19] x86/setup: Leave early boot slightly earlier Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 12/19] x86/setup: vmap heap nodes when they are outside the direct map Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 13/19] x86/setup: Do not create valid mappings when directmap=no Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 14/19] Rename mfn_to_virt() calls Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 15/19] Rename maddr_to_virt() calls Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 16/19] xen/arm32: mm: Rename 'first' to 'root' in init_secondary_pagetables() Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 17/19] xen/arm64: mm: Use per-pCPU page-tables Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 18/19] xen/arm64: Implement a mapcache for arm64 Elias El Yandouzi
2024-05-13 11:11 ` [PATCH V3 19/19] xen/arm64: Allow the admin to enable/disable the directmap Elias El Yandouzi
2024-05-13 12:52 ` [PATCH V3 00/19] Remove " Roger Pau Monné
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