[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 47/62] arm/p2m: Add helper functions to map memory regions
From: Parth Dixit <parth.dixit@xxxxxxxxxx> Create a helper function for mapping with cached attributes. Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx> --- xen/arch/arm/p2m.c | 26 ++++++++++++++++++++++++++ xen/include/asm-arm/p2m.h | 10 ++++++++++ 2 files changed, 36 insertions(+) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index e396c40..7a108d8 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -1140,6 +1140,32 @@ int p2m_populate_ram(struct domain *d, d->arch.p2m.default_access); } +int map_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr, + unsigned long mfn) +{ + return apply_p2m_changes(d, INSERT, + pfn_to_paddr(start_gfn), + pfn_to_paddr(start_gfn + nr), + pfn_to_paddr(mfn), + MATTR_MEM, 0, p2m_mmio_direct, + d->arch.p2m.default_access); +} + +int unmap_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr, + unsigned long mfn) +{ + return apply_p2m_changes(d, REMOVE, + pfn_to_paddr(start_gfn), + pfn_to_paddr(start_gfn + nr), + pfn_to_paddr(mfn), + MATTR_MEM, 0, p2m_invalid, + d->arch.p2m.default_access); +} + int map_mmio_regions(struct domain *d, unsigned long start_gfn, unsigned long nr, diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h index 08bdce3..b6215f9 100644 --- a/xen/include/asm-arm/p2m.h +++ b/xen/include/asm-arm/p2m.h @@ -158,6 +158,16 @@ int p2m_cache_flush(struct domain *d, xen_pfn_t start_mfn, xen_pfn_t end_mfn); /* Setup p2m RAM mapping for domain d from start-end. */ int p2m_populate_ram(struct domain *d, paddr_t start, paddr_t end); +int map_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr_mfns, + unsigned long mfn); + +int unmap_regions(struct domain *d, + unsigned long start_gfn, + unsigned long nr_mfns, + unsigned long mfn); + int guest_physmap_add_entry(struct domain *d, unsigned long gfn, unsigned long mfn, -- 2.1.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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