diff options
| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2014-09-10 22:49:48 +0000 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2014-09-11 18:11:53 +0000 |
| commit | d50582e06fd5a58281151e097ff68b02ca65cf2d (patch) | |
| tree | 5f6de6110c13598515adf5d5d6d8a0ae86d858c9 /arch/arm/include/asm/xen | |
| parent | 340720be32d458ee11d1117719a8e4b6b82981b2 (diff) | |
xen/arm: remove mach_to_phys rbtree
Remove the rbtree used to keep track of machine to physical mappings:
the frontend can grant the same page multiple times, leading to errors
inserting or removing entries from the mach_to_phys tree.
Linux only needed to know the physical address corresponding to a given
machine address in swiotlb-xen. Now that swiotlb-xen can call the
xen_dma_* functions passing the machine address directly, we can remove
it.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: Denis Schneider <v1ne2go@gmail.com>
Diffstat (limited to 'arch/arm/include/asm/xen')
| -rw-r--r-- | arch/arm/include/asm/xen/page.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h index ded062f9b358..135c24a5ba26 100644 --- a/arch/arm/include/asm/xen/page.h +++ b/arch/arm/include/asm/xen/page.h @@ -33,7 +33,6 @@ typedef struct xpaddr { #define INVALID_P2M_ENTRY (~0UL) unsigned long __pfn_to_mfn(unsigned long pfn); -unsigned long __mfn_to_pfn(unsigned long mfn); extern struct rb_root phys_to_mach; static inline unsigned long pfn_to_mfn(unsigned long pfn) @@ -51,14 +50,6 @@ static inline unsigned long pfn_to_mfn(unsigned long pfn) static inline unsigned long mfn_to_pfn(unsigned long mfn) { - unsigned long pfn; - - if (phys_to_mach.rb_node != NULL) { - pfn = __mfn_to_pfn(mfn); - if (pfn != INVALID_P2M_ENTRY) - return pfn; - } - return mfn; } |