From: Julien Grall <julien.grall@linaro.org>
To: xen-devel@lists.xenproject.org
Cc: stefano.stabellini@eu.citrix.com, tim@xen.org,
ian.campbell@citrix.com, Julien Grall <julien.grall@linaro.org>,
patches@linaro.org
Subject: [PATCH 2/3] xen/arm: p2m: add guest_physmap_add_page_rw
Date: Thu, 24 Oct 2013 10:02:44 +0100 [thread overview]
Message-ID: <1382605365-19244-3-git-send-email-julien.grall@linaro.org> (raw)
In-Reply-To: <1382605365-19244-1-git-send-email-julien.grall@linaro.org>
This function allows Xen to map memory read/write or read-only to the
guest memory.
Signed-off-by: Julien Grall <julien.grall@linaro.org>
---
xen/arch/arm/p2m.c | 11 +++++++++++
xen/include/asm-arm/p2m.h | 5 +++++
2 files changed, 16 insertions(+)
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index fdbb07b..0c515e1 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -267,6 +267,17 @@ int guest_physmap_add_page(struct domain *d,
mfn << PAGE_SHIFT, MATTR_MEM, 1);
}
+int guest_physmap_add_page_rw(struct domain *d,
+ unsigned long gpfn,
+ unsigned long mfn,
+ unsigned int page_order,
+ bool_t rw)
+{
+ return create_p2m_entries(d, INSERT, gpfn << PAGE_SHIFT,
+ (gpfn + (1 << page_order)) << PAGE_SHIFT,
+ mfn << PAGE_SHIFT, MATTR_MEM, rw);
+}
+
void guest_physmap_remove_page(struct domain *d,
unsigned long gpfn,
unsigned long mfn, unsigned int page_order)
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index c660820..250f916 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -54,6 +54,11 @@ int guest_physmap_add_page(struct domain *d,
unsigned long gfn,
unsigned long mfn,
unsigned int page_order);
+int guest_physmap_add_page_rw(struct domain *d,
+ unsigned long gfn,
+ unsigned long mfn,
+ unsigned int page_order,
+ bool_t rw);
void guest_physmap_remove_page(struct domain *d,
unsigned long gpfn,
unsigned long mfn, unsigned int page_order);
--
1.8.3.1
next prev parent reply other threads:[~2013-10-24 9:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 9:02 [PATCH 0/3] ARM: Support read-only mapping in the grant table Julien Grall
2013-10-24 9:02 ` [PATCH 1/3] xen/arm: p2m: extend create_p2m_entries to support read-only mapping Julien Grall
2013-11-11 13:23 ` Ian Campbell
2013-11-12 13:13 ` Julien Grall
2013-10-24 9:02 ` Julien Grall [this message]
2013-11-11 13:30 ` [PATCH 2/3] xen/arm: p2m: add guest_physmap_add_page_rw Ian Campbell
2013-10-24 9:02 ` [PATCH 3/3] xen/arm: grant-table: Support read-only mapping Julien Grall
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