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[RFC PATCH v6 39/43] x86/altp2m: Add altp2m_reset_altp2m declaration to arch header
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>
- Date: Mon, 20 Apr 2026 17:32:02 -0400
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- Cc: Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>
- Delivery-date: Mon, 20 Apr 2026 21:34:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
This commit makes altp2m_reset_altp2m non-static and adds a declaration to
the asm/altp2m.h header. This makes it possible to call this function in
common altp2m routines. The altp2m_reset_type enum (which is the type of
one of the parameters of altp2m_reset) is also moved to the asm/altp2m.h
header.
This is commit 1/2 of the altp2m_reset_altp2m phase.
Signed-off-by: Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>
---
v6: Introduced this patch.
---
xen/arch/x86/include/asm/altp2m.h | 8 ++++++++
xen/arch/x86/mm/altp2m.c | 9 ++-------
2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/xen/arch/x86/include/asm/altp2m.h
b/xen/arch/x86/include/asm/altp2m.h
index e7239326c71d..02b5e1a11220 100644
--- a/xen/arch/x86/include/asm/altp2m.h
+++ b/xen/arch/x86/include/asm/altp2m.h
@@ -92,6 +92,14 @@ int altp2m_init_next_available(struct domain *d, uint16_t
*idx,
/* Make a specific alternate p2m invalid */
int altp2m_destroy_by_id(struct domain *d, unsigned int idx);
+/* Reset an altp2m view */
+enum altp2m_reset_type {
+ ALTP2M_RESET,
+ ALTP2M_DEACTIVATE
+};
+void altp2m_reset_altp2m(struct domain *d, unsigned int idx,
+ enum altp2m_reset_type reset_type);
+
/* Activate an altp2m view */
int altp2m_activate_altp2m(struct domain *d, unsigned int idx,
p2m_access_t hvmmem_default_access);
diff --git a/xen/arch/x86/mm/altp2m.c b/xen/arch/x86/mm/altp2m.c
index edbaf54c3761..18f8a71f1682 100644
--- a/xen/arch/x86/mm/altp2m.c
+++ b/xen/arch/x86/mm/altp2m.c
@@ -228,13 +228,8 @@ bool altp2m_get_or_propagate(struct p2m_domain *ap2m,
unsigned long gfn_l,
return true;
}
-enum altp2m_reset_type {
- ALTP2M_RESET,
- ALTP2M_DEACTIVATE
-};
-
-static void altp2m_reset_altp2m(struct domain *d, unsigned int idx,
- enum altp2m_reset_type reset_type)
+void altp2m_reset_altp2m(struct domain *d, unsigned int idx,
+ enum altp2m_reset_type reset_type)
{
struct p2m_domain *p2m;
--
2.34.1
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