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[RFC PATCH v6 16/43] arm/p2m: Cosmetic fix - substitute _gfn(ULONG_MAX) for INVALID_GFN
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>
- Date: Mon, 20 Apr 2026 17:31:39 -0400
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- Cc: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 20 Apr 2026 21:33:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
From: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
In ./xen/arch/arm/p2m.c, we compare the gfn's with INVALID_GFN
throughout the code. Thus it makes sense to use the macro INVALID_GFN
instead of a hard coded value to initialize "p2m->lowest_mapped_gfn".
This is commit 5/12 of the altp2m_init/altp2m_teardown routines phase.
Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
---
xen/arch/arm/mmu/p2m.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/arm/mmu/p2m.c b/xen/arch/arm/mmu/p2m.c
index 3ecb969a0369..1009f10e5db4 100644
--- a/xen/arch/arm/mmu/p2m.c
+++ b/xen/arch/arm/mmu/p2m.c
@@ -1517,7 +1517,7 @@ static int p2m_initialise(struct domain *d, struct
p2m_domain *p2m)
p2m->vmid = INVALID_VMID;
p2m->max_mapped_gfn = _gfn(0);
- p2m->lowest_mapped_gfn = _gfn(ULONG_MAX);
+ p2m->lowest_mapped_gfn = INVALID_GFN;
p2m->default_access = p2m_access_rwx;
p2m->mem_access_enabled = false;
--
2.34.1
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