[xen master] mm: move paddr_to_pdx()

[patchbot@xxxxxxx]

commit 3120e479a0e55768eccb5e8e7c3c81fd809501a0
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Fri May 2 09:44:03 2025 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri May 2 09:44:03 2025 +0200

    mm: move paddr_to_pdx()
    
    There's nothing arch-specific about it.
    
    While there, on x86 visually separate the vmap_to_*() macros from those
    covered by the earlier comment.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
    Reviewed-by: Oleksii Kurochko<oleksii.kurochko@xxxxxxxxx>
---
 xen/arch/arm/include/asm/mm.h   | 1 -
 xen/arch/ppc/include/asm/mm.h   | 1 -
 xen/arch/riscv/include/asm/mm.h | 1 -
 xen/arch/x86/include/asm/page.h | 3 ++-
 xen/include/xen/pdx.h           | 2 ++
 5 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/arch/arm/include/asm/mm.h b/xen/arch/arm/include/asm/mm.h
index 5b67c0f8bb..011bc1fd30 100644
--- a/xen/arch/arm/include/asm/mm.h
+++ b/xen/arch/arm/include/asm/mm.h
@@ -237,7 +237,6 @@ static inline void __iomem *ioremap_wc(paddr_t start, 
size_t len)
 /* 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 paddr_to_pdx(pa)    mfn_to_pdx(maddr_to_mfn(pa))
 #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))
diff --git a/xen/arch/ppc/include/asm/mm.h b/xen/arch/ppc/include/asm/mm.h
index a433936076..a33eeec43b 100644
--- a/xen/arch/ppc/include/asm/mm.h
+++ b/xen/arch/ppc/include/asm/mm.h
@@ -13,7 +13,6 @@ void setup_initial_pagetables(void);
 
 #define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
 #define paddr_to_pfn(pa)  ((unsigned long)((pa) >> PAGE_SHIFT))
-#define paddr_to_pdx(pa)  mfn_to_pdx(maddr_to_mfn(pa))
 #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))
diff --git a/xen/arch/riscv/include/asm/mm.h b/xen/arch/riscv/include/asm/mm.h
index ef8b35d7c2..01bbd92a06 100644
--- a/xen/arch/riscv/include/asm/mm.h
+++ b/xen/arch/riscv/include/asm/mm.h
@@ -19,7 +19,6 @@ extern vaddr_t directmap_virt_start;
 #define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
 #define paddr_to_pfn(pa)  ((unsigned long)((pa) >> PAGE_SHIFT))
 
-#define paddr_to_pdx(pa)    mfn_to_pdx(maddr_to_mfn(pa))
 #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))
diff --git a/xen/arch/x86/include/asm/page.h b/xen/arch/x86/include/asm/page.h
index 24135f5968..8b5a9f77d0 100644
--- a/xen/arch/x86/include/asm/page.h
+++ b/xen/arch/x86/include/asm/page.h
@@ -258,7 +258,8 @@ void copy_page_sse2(void *to, const void *from);
 #define mfn_to_virt(mfn)    __mfn_to_virt(mfn)
 #define pfn_to_paddr(pfn)   __pfn_to_paddr(pfn)
 #define paddr_to_pfn(pa)    __paddr_to_pfn(pa)
-#define paddr_to_pdx(pa)    pfn_to_pdx(paddr_to_pfn(pa))
+
+/* Specialized forms acting on vmap() addresses. */
 #define vmap_to_mfn(va)     xen_map_to_mfn((unsigned long)(va))
 #define vmap_to_page(va)    mfn_to_page(vmap_to_mfn(va))
 
diff --git a/xen/include/xen/pdx.h b/xen/include/xen/pdx.h
index 23f3956db8..9faeea3ac9 100644
--- a/xen/include/xen/pdx.h
+++ b/xen/include/xen/pdx.h
@@ -98,6 +98,8 @@ bool __mfn_valid(unsigned long mfn);
 #define mfn_to_pdx(mfn) pfn_to_pdx(mfn_x(mfn))
 #define pdx_to_mfn(pdx) _mfn(pdx_to_pfn(pdx))
 
+#define paddr_to_pdx(pa) pfn_to_pdx(paddr_to_pfn(pa))
+
 #ifdef CONFIG_PDX_COMPRESSION
 
 extern unsigned long pfn_pdx_bottom_mask, ma_va_bottom_mask;
--
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