diff mbox series

[v2] mm: Unify PRI_gfn and PRI_mfn macros

Message ID 20240909131419.127276-1-frediano.ziglio@cloud.com (mailing list archive)
State New
Headers show
Series [v2] mm: Unify PRI_gfn and PRI_mfn macros | expand

Commit Message

Frediano Ziglio Sept. 9, 2024, 1:14 p.m. UTC
Always format with no padding and hex prefix, if needed.

Signed-off-by: Frediano Ziglio <frediano.ziglio@cloud.com>
---
 xen/arch/arm/mmu/p2m.c               |  4 ++--
 xen/arch/arm/mmu/pt.c                |  2 +-
 xen/arch/arm/p2m.c                   |  6 +++---
 xen/arch/arm/static-shmem.c          |  2 +-
 xen/arch/x86/hvm/viridian/viridian.c |  4 ++--
 xen/arch/x86/mm/p2m.c                |  2 +-
 xen/arch/x86/mm/shadow/common.c      |  2 +-
 xen/arch/x86/traps.c                 |  2 +-
 xen/common/grant_table.c             | 18 +++++++++---------
 xen/common/memory.c                  |  4 ++--
 xen/drivers/passthrough/x86/iommu.c  |  4 ++--
 xen/include/xen/mm-frame.h           |  4 ++--
 12 files changed, 27 insertions(+), 27 deletions(-)
---
Changes since v1:
- unify entirely the format, not just some minor fixes.

Comments

Jan Beulich Sept. 9, 2024, 1:21 p.m. UTC | #1
On 09.09.2024 15:14, Frediano Ziglio wrote:
> @@ -4334,7 +4334,7 @@ static void gnttab_usage_print(struct domain *rd)
>          first = 0;
>  
>          /*      [0xXXX]  ddddd 0xXXXXX 0xXXXXXXXX      ddddd 0xXXXXXX 0xXX */
> -        printk("[0x%03x]  %5d 0x%"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64" 0x%02x\n",
> +        printk("[0x%03x]  %5d %"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64" 0x%02x\n",
>                 ref, act->domid, mfn_x(act->mfn), act->pin,
>                 sha->domid, frame, status);

Sadly this is where things break: The columnar view will no longer be retained
even on systems with memory only below 4Gb. I have to admit I'm not sure in how
far we can deem this acceptable.

Jan
Frediano Ziglio Sept. 9, 2024, 1:29 p.m. UTC | #2
On Mon, Sep 9, 2024 at 2:21 PM Jan Beulich <jbeulich@suse.com> wrote:

> On 09.09.2024 15:14, Frediano Ziglio wrote:
> > @@ -4334,7 +4334,7 @@ static void gnttab_usage_print(struct domain *rd)
> >          first = 0;
> >
> >          /*      [0xXXX]  ddddd 0xXXXXX 0xXXXXXXXX      ddddd 0xXXXXXX
> 0xXX */
> > -        printk("[0x%03x]  %5d 0x%"PRI_mfn" 0x%08x      %5d
> 0x%06"PRIx64" 0x%02x\n",
> > +        printk("[0x%03x]  %5d %"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64"
> 0x%02x\n",
> >                 ref, act->domid, mfn_x(act->mfn), act->pin,
> >                 sha->domid, frame, status);
>
> Sadly this is where things break: The columnar view will no longer be
> retained
> even on systems with memory only below 4Gb. I have to admit I'm not sure
> in how
> far we can deem this acceptable.
>
> Jan
>

I suppose this line is more the exception to the rule.
One option would be to define the macros to just take care of the type and
base (like standards like PRIx64) and specify all in the strings (so having
"%#"PRI_mfn or "0x%05"PRI_mfn).
Or define 2 macros, one for default format (I would go for PRI_mfn) and
another for raw format (like PRIx_mfn).

Frediano
Jan Beulich Sept. 9, 2024, 2:01 p.m. UTC | #3
On 09.09.2024 15:29, Frediano Ziglio wrote:
> On Mon, Sep 9, 2024 at 2:21 PM Jan Beulich <jbeulich@suse.com> wrote:
> 
>> On 09.09.2024 15:14, Frediano Ziglio wrote:
>>> @@ -4334,7 +4334,7 @@ static void gnttab_usage_print(struct domain *rd)
>>>          first = 0;
>>>
>>>          /*      [0xXXX]  ddddd 0xXXXXX 0xXXXXXXXX      ddddd 0xXXXXXX
>> 0xXX */
>>> -        printk("[0x%03x]  %5d 0x%"PRI_mfn" 0x%08x      %5d
>> 0x%06"PRIx64" 0x%02x\n",
>>> +        printk("[0x%03x]  %5d %"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64"
>> 0x%02x\n",
>>>                 ref, act->domid, mfn_x(act->mfn), act->pin,
>>>                 sha->domid, frame, status);
>>
>> Sadly this is where things break: The columnar view will no longer be
>> retained
>> even on systems with memory only below 4Gb. I have to admit I'm not sure
>> in how
>> far we can deem this acceptable.
> 
> I suppose this line is more the exception to the rule.
> One option would be to define the macros to just take care of the type and
> base (like standards like PRIx64) and specify all in the strings (so having
> "%#"PRI_mfn or "0x%05"PRI_mfn).

Certainly an option, yes. Let's see what other maintainers think.

> Or define 2 macros, one for default format (I would go for PRI_mfn) and
> another for raw format (like PRIx_mfn).

Only if we really need to have such further specialization, I'd say.

Jan
diff mbox series

Patch

diff --git a/xen/arch/arm/mmu/p2m.c b/xen/arch/arm/mmu/p2m.c
index 1725cca649..dfc7c4bfa6 100644
--- a/xen/arch/arm/mmu/p2m.c
+++ b/xen/arch/arm/mmu/p2m.c
@@ -184,7 +184,7 @@  void dump_p2m_lookup(struct domain *d, paddr_t addr)
 
     printk("dom%d IPA 0x%"PRIpaddr"\n", d->domain_id, addr);
 
-    printk("P2M @ %p mfn:%#"PRI_mfn"\n",
+    printk("P2M @ %p mfn:%"PRI_mfn"\n",
            p2m->root, mfn_x(page_to_mfn(p2m->root)));
 
     dump_pt_walk(page_to_maddr(p2m->root), addr,
@@ -1621,7 +1621,7 @@  int relinquish_p2m_mapping(struct domain *d)
                                  p2m_invalid, p2m_access_rwx);
             if ( unlikely(rc) )
             {
-                printk(XENLOG_G_ERR "Unable to remove mapping gfn=%#"PRI_gfn" order=%u from the p2m of domain %d\n", gfn_x(start), order, d->domain_id);
+                printk(XENLOG_G_ERR "Unable to remove mapping gfn=%"PRI_gfn" order=%u from the p2m of domain %d\n", gfn_x(start), order, d->domain_id);
                 break;
             }
         }
diff --git a/xen/arch/arm/mmu/pt.c b/xen/arch/arm/mmu/pt.c
index da28d669e7..92d7848acb 100644
--- a/xen/arch/arm/mmu/pt.c
+++ b/xen/arch/arm/mmu/pt.c
@@ -362,7 +362,7 @@  static bool xen_pt_check_entry(lpae_t entry, mfn_t mfn, unsigned int level,
         if ( lpae_is_valid(entry) )
         {
             if ( lpae_is_mapping(entry, level) )
-                mm_printk("Changing MFN for a valid entry is not allowed (%#"PRI_mfn" -> %#"PRI_mfn").\n",
+                mm_printk("Changing MFN for a valid entry is not allowed (%"PRI_mfn" -> %"PRI_mfn").\n",
                           mfn_x(lpae_get_mfn(entry)), mfn_x(mfn));
             else
                 mm_printk("Trying to replace a table with a mapping.\n");
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index 2465c266e9..add547fe3e 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -196,7 +196,7 @@  int map_dev_mmio_page(struct domain *d, gfn_t gfn, mfn_t mfn)
     res = p2m_insert_mapping(d, gfn, 1, mfn, p2m_mmio_direct_c);
     if ( res < 0 )
     {
-        printk(XENLOG_G_ERR "Unable to map MFN %#"PRI_mfn" in %pd\n",
+        printk(XENLOG_G_ERR "Unable to map MFN %"PRI_mfn" in %pd\n",
                mfn_x(mfn), d);
         return res;
     }
@@ -566,7 +566,7 @@  struct page_info *get_page_from_gva(struct vcpu *v, vaddr_t va,
 
     if ( !mfn_valid(mfn) )
     {
-        dprintk(XENLOG_G_DEBUG, "%pv: Invalid MFN %#"PRI_mfn"\n",
+        dprintk(XENLOG_G_DEBUG, "%pv: Invalid MFN %"PRI_mfn"\n",
                 v, mfn_x(mfn));
         return NULL;
     }
@@ -576,7 +576,7 @@  struct page_info *get_page_from_gva(struct vcpu *v, vaddr_t va,
 
     if ( unlikely(!get_page(page, d)) )
     {
-        dprintk(XENLOG_G_DEBUG, "%pv: Failing to acquire the MFN %#"PRI_mfn"\n",
+        dprintk(XENLOG_G_DEBUG, "%pv: Failing to acquire the MFN %"PRI_mfn"\n",
                 v, mfn_x(maddr_to_mfn(maddr)));
         return NULL;
     }
diff --git a/xen/arch/arm/static-shmem.c b/xen/arch/arm/static-shmem.c
index aa80756c3c..6e6574b271 100644
--- a/xen/arch/arm/static-shmem.c
+++ b/xen/arch/arm/static-shmem.c
@@ -357,7 +357,7 @@  int __init process_shm(struct domain *d, struct kernel_info *kinfo,
             for ( i = 0; i < PFN_DOWN(psize); i++ )
                 if ( !mfn_valid(mfn_add(maddr_to_mfn(pbase), i)) )
                 {
-                    printk("%pd: invalid physical address 0x%"PRI_mfn"\n",
+                    printk("%pd: invalid physical address %"PRI_mfn"\n",
                         d, mfn_x(mfn_add(maddr_to_mfn(pbase), i)));
                     return -EINVAL;
                 }
diff --git a/xen/arch/x86/hvm/viridian/viridian.c b/xen/arch/x86/hvm/viridian/viridian.c
index 21480d9ee7..5d6951e8dc 100644
--- a/xen/arch/x86/hvm/viridian/viridian.c
+++ b/xen/arch/x86/hvm/viridian/viridian.c
@@ -279,7 +279,7 @@  static void enable_hypercall_page(struct domain *d)
     {
         if ( page )
             put_page(page);
-        gdprintk(XENLOG_WARNING, "Bad GMFN %#"PRI_gfn" (MFN %#"PRI_mfn")\n",
+        gdprintk(XENLOG_WARNING, "Bad GMFN %"PRI_gfn" (MFN %"PRI_mfn")\n",
                  gmfn, mfn_x(page ? page_to_mfn(page) : INVALID_MFN));
         return;
     }
@@ -1090,7 +1090,7 @@  void viridian_map_guest_page(struct domain *d, struct viridian_page *vp)
     return;
 
  fail:
-    gdprintk(XENLOG_WARNING, "Bad GMFN %#"PRI_gfn" (MFN %#"PRI_mfn")\n",
+    gdprintk(XENLOG_WARNING, "Bad GMFN %"PRI_gfn" (MFN %"PRI_mfn")\n",
              gmfn, mfn_x(page ? page_to_mfn(page) : INVALID_MFN));
 }
 
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index 1739133fc2..adee424c9c 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -1066,7 +1066,7 @@  static int set_typed_p2m_entry(struct domain *d, unsigned long gfn_l,
     rc = p2m_set_entry(p2m, gfn, mfn, order, gfn_p2mt, access);
     if ( unlikely(rc) )
     {
-        gdprintk(XENLOG_ERR, "p2m_set_entry: %#lx:%u -> %d (0x%"PRI_mfn")\n",
+        gdprintk(XENLOG_ERR, "p2m_set_entry: %#lx:%u -> %d (%"PRI_mfn")\n",
                  gfn_l, order, rc, mfn_x(mfn));
 
         /*
diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c
index 0176e33bc9..b01539a782 100644
--- a/xen/arch/x86/mm/shadow/common.c
+++ b/xen/arch/x86/mm/shadow/common.c
@@ -2585,7 +2585,7 @@  pagetable_t sh_set_toplevel_shadow(struct vcpu *v,
 
  install_new_entry:
     /* Done.  Install it */
-    SHADOW_PRINTK("%u [%u] gmfn %#"PRI_mfn" smfn %#"PRI_mfn"\n",
+    SHADOW_PRINTK("%u [%u] gmfn %"PRI_mfn" smfn %"PRI_mfn"\n",
                   v->arch.paging.mode->shadow.shadow_levels, slot,
                   mfn_x(gmfn), mfn_x(pagetable_get_mfn(new_entry)));
     v->arch.paging.shadow.shadow_table[slot] = new_entry;
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 708136f625..7013fc6a7b 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -1034,7 +1034,7 @@  int guest_wrmsr_xen(struct vcpu *v, uint32_t idx, uint64_t val)
             }
 
             gdprintk(XENLOG_WARNING,
-                     "Bad GMFN %lx (MFN %#"PRI_mfn") to MSR %08x\n",
+                     "Bad GMFN %lx (MFN %"PRI_mfn") to MSR %08x\n",
                      gmfn, mfn_x(page ? page_to_mfn(page) : INVALID_MFN), base);
             return X86EMUL_EXCEPTION;
         }
diff --git a/xen/common/grant_table.c b/xen/common/grant_table.c
index ab36f45ded..2a5c3e2fe1 100644
--- a/xen/common/grant_table.c
+++ b/xen/common/grant_table.c
@@ -1164,7 +1164,7 @@  map_grant_ref(
         if ( !iomem_access_permitted(rd, mfn_x(mfn), mfn_x(mfn)) )
         {
             gdprintk(XENLOG_WARNING,
-                     "Iomem mapping not permitted %#"PRI_mfn" (domain %d)\n",
+                     "Iomem mapping not permitted %"PRI_mfn" (domain %d)\n",
                      mfn_x(mfn), rd->domain_id);
             rc = GNTST_general_error;
             goto undo_out;
@@ -1223,7 +1223,7 @@  map_grant_ref(
     {
     could_not_pin:
         if ( !rd->is_dying )
-            gdprintk(XENLOG_WARNING, "Could not pin grant frame %#"PRI_mfn"\n",
+            gdprintk(XENLOG_WARNING, "Could not pin grant frame %"PRI_mfn"\n",
                      mfn_x(mfn));
         rc = GNTST_general_error;
         goto undo_out;
@@ -1848,7 +1848,7 @@  gnttab_unpopulate_status_frames(struct domain *d, struct grant_table *gt)
             if ( rc )
             {
                 gprintk(XENLOG_ERR,
-                        "Could not remove status frame %u (GFN %#lx) from P2M\n",
+                        "Could not remove status frame %u (GFN %"PRI_gfn") from P2M\n",
                         i, gfn_x(gfn));
                 domain_crash(d);
                 return rc;
@@ -1863,7 +1863,7 @@  gnttab_unpopulate_status_frames(struct domain *d, struct grant_table *gt)
             if ( paging_mode_translate(d) )
             {
                 gprintk(XENLOG_ERR,
-                        "Wrong page state %#lx of status frame %u (GFN %#lx)\n",
+                        "Wrong page state %#lx of status frame %u (GFN %"PRI_gfn")\n",
                         pg->count_info, i, gfn_x(gfn));
                 domain_crash(d);
             }
@@ -2325,7 +2325,7 @@  gnttab_transfer(
         if ( rc )
         {
             gdprintk(XENLOG_INFO,
-                     "can't remove GFN %"PRI_xen_pfn" (MFN %#"PRI_mfn")\n",
+                     "can't remove GFN %"PRI_xen_pfn" (MFN %"PRI_mfn")\n",
                      gop.mfn, mfn_x(mfn));
             gop.status = GNTST_general_error;
             goto put_gfn_and_copyback;
@@ -2992,7 +2992,7 @@  static int gnttab_copy_claim_buf(const struct gnttab_copy *op,
         {
             if ( !buf->domain->is_dying )
                 gdprintk(XENLOG_WARNING,
-                         "Could not get writable frame %#"PRI_mfn"\n",
+                         "Could not get writable frame %"PRI_mfn"\n",
                          mfn_x(buf->mfn));
             rc = GNTST_general_error;
             goto out;
@@ -3981,9 +3981,9 @@  void grant_table_warn_active_grants(struct domain *d)
         if ( nr_active <= WARN_GRANT_MAX )
             printk(XENLOG_G_DEBUG "d%d has active grant %x ("
 #ifndef NDEBUG
-                   "GFN %lx, "
+                   "GFN %"PRI_gfn", "
 #endif
-                   "MFN: %#"PRI_mfn")\n",
+                   "MFN: %"PRI_mfn")\n",
                    d->domain_id, ref,
 #ifndef NDEBUG
                    gfn_x(act->gfn),
@@ -4334,7 +4334,7 @@  static void gnttab_usage_print(struct domain *rd)
         first = 0;
 
         /*      [0xXXX]  ddddd 0xXXXXX 0xXXXXXXXX      ddddd 0xXXXXXX 0xXX */
-        printk("[0x%03x]  %5d 0x%"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64" 0x%02x\n",
+        printk("[0x%03x]  %5d %"PRI_mfn" 0x%08x      %5d 0x%06"PRIx64" 0x%02x\n",
                ref, act->domid, mfn_x(act->mfn), act->pin,
                sha->domid, frame, status);
         active_entry_release(act);
diff --git a/xen/common/memory.c b/xen/common/memory.c
index a6f2f6d1b3..f552c0e894 100644
--- a/xen/common/memory.c
+++ b/xen/common/memory.c
@@ -229,7 +229,7 @@  static void populate_physmap(struct memop_args *a)
                 {
                     if ( !mfn_valid(mfn) )
                     {
-                        gdprintk(XENLOG_INFO, "Invalid mfn %#"PRI_mfn"\n",
+                        gdprintk(XENLOG_INFO, "Invalid mfn %"PRI_mfn"\n",
                                  mfn_x(mfn));
                         goto out;
                     }
@@ -238,7 +238,7 @@  static void populate_physmap(struct memop_args *a)
                     if ( !get_page(page, d) )
                     {
                         gdprintk(XENLOG_INFO,
-                                 "mfn %#"PRI_mfn" doesn't belong to d%d\n",
+                                 "mfn %"PRI_mfn" doesn't belong to d%d\n",
                                   mfn_x(mfn), d->domain_id);
                         goto out;
                     }
diff --git a/xen/drivers/passthrough/x86/iommu.c b/xen/drivers/passthrough/x86/iommu.c
index 8b1e0596b8..28f226e951 100644
--- a/xen/drivers/passthrough/x86/iommu.c
+++ b/xen/drivers/passthrough/x86/iommu.c
@@ -826,7 +826,7 @@  bool __init iommu_unity_region_ok(const char *prefix, mfn_t start, mfn_t end)
                                 mfn_to_maddr(addr) + PAGE_SIZE, E820_RESERVED) )
                 continue;
             printk(XENLOG_ERR
-                   "%s: page at %#" PRI_mfn " couldn't be reserved\n",
+                   "%s: page at %" PRI_mfn " couldn't be reserved\n",
                    prefix, mfn_x(addr));
             return false;
         }
@@ -842,7 +842,7 @@  bool __init iommu_unity_region_ok(const char *prefix, mfn_t start, mfn_t end)
             continue;
 
         printk(XENLOG_ERR
-               "%s: page at %#" PRI_mfn " can't be converted\n",
+               "%s: page at %" PRI_mfn " can't be converted\n",
                prefix, mfn_x(addr));
         return false;
     }
diff --git a/xen/include/xen/mm-frame.h b/xen/include/xen/mm-frame.h
index d973aec901..37c960b5bd 100644
--- a/xen/include/xen/mm-frame.h
+++ b/xen/include/xen/mm-frame.h
@@ -5,7 +5,7 @@ 
 #include <xen/typesafe.h>
 
 TYPE_SAFE(unsigned long, mfn);
-#define PRI_mfn          "05lx"
+#define PRI_mfn          "#lx"
 #define INVALID_MFN_RAW  (~0UL)
 #define INVALID_MFN      _mfn(INVALID_MFN_RAW)
 /*
@@ -41,7 +41,7 @@  static inline bool mfn_eq(mfn_t x, mfn_t y)
 }
 
 TYPE_SAFE(unsigned long, gfn);
-#define PRI_gfn          "05lx"
+#define PRI_gfn          "#lx"
 #define INVALID_GFN_RAW  (~0UL)
 #define INVALID_GFN      _gfn(INVALID_GFN_RAW)
 /*