[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2/3] xen/arm: p2m: add guest_physmap_add_page_rw
This function allows Xen to map memory read/write or read-only to the guest memory. Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> --- 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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