| Message ID | 20170912100330.2168-2-julien.grall@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 12/09/17 11:03, Julien Grall wrote: > The new wrappers will add more safety when converting an address to a > frame number (either machine or guest). They are already existing for > Arm and could be useful in common code. > > Signed-off-by: Julien Grall <julien.grall@arm.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
On Tue, Sep 12, 2017 at 11:03:07AM +0100, Julien Grall wrote: > The new wrappers will add more safety when converting an address to a > frame number (either machine or guest). They are already existing for > Arm and could be useful in common code. > > Signed-off-by: Julien Grall <julien.grall@arm.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com>
diff --git a/xen/include/asm-x86/page.h b/xen/include/asm-x86/page.h index cde5c6b89b..45ca742678 100644 --- a/xen/include/asm-x86/page.h +++ b/xen/include/asm-x86/page.h @@ -250,6 +250,10 @@ void copy_page_sse2(void *, const void *); /* Convert between frame number and address formats. */ #define __pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT) #define __paddr_to_pfn(pa) ((unsigned long)((pa) >> PAGE_SHIFT)) +#define gfn_to_gaddr(gfn) __pfn_to_paddr(gfn_x(gfn)) +#define gaddr_to_gfn(ga) _gfn(__paddr_to_pfn(ga)) +#define mfn_to_maddr(mfn) __pfn_to_paddr(mfn_x(mfn)) +#define maddr_to_mfn(ma) _mfn(__paddr_to_pfn(ma)) /* * We define non-underscored wrappers for above conversion functions. These are
The new wrappers will add more safety when converting an address to a frame number (either machine or guest). They are already existing for Arm and could be useful in common code. Signed-off-by: Julien Grall <julien.grall@arm.com> --- Changes in v2: - Implement it in arch specific rather than in common code. Hence rename the patch. Cc: Andrew Cooper <andrew.cooper3@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> --- xen/include/asm-x86/page.h | 4 ++++ 1 file changed, 4 insertions(+)