[xen staging] x86/mm: the gva_to_gfn() hook is HVM-only

[patchbot@xxxxxxx]

commit cb117e426f544af6af3e071249a650ecd7f88655
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon May 3 15:27:21 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon May 3 15:27:21 2021 +0200

    x86/mm: the gva_to_gfn() hook is HVM-only
    
    As is the adjacent ga_to_gfn() one as well as paging_gva_to_gfn().
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Tim Deegan <tim@xxxxxxx>
---
 xen/arch/x86/mm/p2m.c          | 3 ++-
 xen/arch/x86/mm/shadow/multi.c | 4 ++++
 xen/arch/x86/mm/shadow/none.c  | 4 ++++
 xen/include/asm-x86/paging.h   | 6 ++++++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index e76d8c66d3..7c3a5c8570 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -1793,7 +1793,6 @@ void np2m_schedule(int dir)
         p2m_unlock(p2m);
     }
 }
-#endif
 
 unsigned long paging_gva_to_gfn(struct vcpu *v,
                                 unsigned long va,
@@ -1844,6 +1843,8 @@ unsigned long paging_gva_to_gfn(struct vcpu *v,
     return hostmode->gva_to_gfn(v, hostp2m, va, pfec);
 }
 
+#endif /* CONFIG_HVM */
+
 /*
  * If the map is non-NULL, we leave this function having acquired an extra ref
  * on mfn_to_page(*mfn).  In all cases, *pfec contains appropriate
diff --git a/xen/arch/x86/mm/shadow/multi.c b/xen/arch/x86/mm/shadow/multi.c
index ae65da439f..8bb028c2e2 100644
--- a/xen/arch/x86/mm/shadow/multi.c
+++ b/xen/arch/x86/mm/shadow/multi.c
@@ -3030,6 +3030,7 @@ static bool sh_invlpg(struct vcpu *v, unsigned long 
linear)
     return true;
 }
 
+#ifdef CONFIG_HVM
 
 static unsigned long
 sh_gva_to_gfn(struct vcpu *v, struct p2m_domain *p2m,
@@ -3063,6 +3064,7 @@ sh_gva_to_gfn(struct vcpu *v, struct p2m_domain *p2m,
     return gfn_x(gfn);
 }
 
+#endif /* CONFIG_HVM */
 
 static inline void
 sh_update_linear_entries(struct vcpu *v)
@@ -4183,7 +4185,9 @@ int sh_audit_l4_table(struct vcpu *v, mfn_t sl4mfn, mfn_t 
x)
 const struct paging_mode sh_paging_mode = {
     .page_fault                    = sh_page_fault,
     .invlpg                        = sh_invlpg,
+#ifdef CONFIG_HVM
     .gva_to_gfn                    = sh_gva_to_gfn,
+#endif
     .update_cr3                    = sh_update_cr3,
     .update_paging_modes           = shadow_update_paging_modes,
     .flush_tlb                     = shadow_flush_tlb,
diff --git a/xen/arch/x86/mm/shadow/none.c b/xen/arch/x86/mm/shadow/none.c
index 67745074c4..79889b926a 100644
--- a/xen/arch/x86/mm/shadow/none.c
+++ b/xen/arch/x86/mm/shadow/none.c
@@ -43,12 +43,14 @@ static bool _invlpg(struct vcpu *v, unsigned long linear)
     return true;
 }
 
+#ifdef CONFIG_HVM
 static unsigned long _gva_to_gfn(struct vcpu *v, struct p2m_domain *p2m,
                                  unsigned long va, uint32_t *pfec)
 {
     ASSERT_UNREACHABLE();
     return gfn_x(INVALID_GFN);
 }
+#endif
 
 static void _update_cr3(struct vcpu *v, int do_locking, bool noflush)
 {
@@ -63,7 +65,9 @@ static void _update_paging_modes(struct vcpu *v)
 static const struct paging_mode sh_paging_none = {
     .page_fault                    = _page_fault,
     .invlpg                        = _invlpg,
+#ifdef CONFIG_HVM
     .gva_to_gfn                    = _gva_to_gfn,
+#endif
     .update_cr3                    = _update_cr3,
     .update_paging_modes           = _update_paging_modes,
 };
diff --git a/xen/include/asm-x86/paging.h b/xen/include/asm-x86/paging.h
index 7332a9b506..fa22558e2e 100644
--- a/xen/include/asm-x86/paging.h
+++ b/xen/include/asm-x86/paging.h
@@ -127,6 +127,7 @@ struct paging_mode {
                                             struct cpu_user_regs *regs);
     bool          (*invlpg                )(struct vcpu *v,
                                             unsigned long linear);
+#ifdef CONFIG_HVM
     unsigned long (*gva_to_gfn            )(struct vcpu *v,
                                             struct p2m_domain *p2m,
                                             unsigned long va,
@@ -136,6 +137,7 @@ struct paging_mode {
                                             unsigned long cr3,
                                             paddr_t ga, uint32_t *pfec,
                                             unsigned int *page_order);
+#endif
     void          (*update_cr3            )(struct vcpu *v, int do_locking,
                                             bool noflush);
     void          (*update_paging_modes   )(struct vcpu *v);
@@ -287,6 +289,8 @@ unsigned long paging_gva_to_gfn(struct vcpu *v,
                                 unsigned long va,
                                 uint32_t *pfec);
 
+#ifdef CONFIG_HVM
+
 /* Translate a guest address using a particular CR3 value.  This is used
  * to by nested HAP code, to walk the guest-supplied NPT tables as if
  * they were pagetables.
@@ -305,6 +309,8 @@ static inline unsigned long paging_ga_to_gfn_cr3(struct 
vcpu *v,
         page_order);
 }
 
+#endif /* CONFIG_HVM */
+
 /* Update all the things that are derived from the guest's CR3.
  * Called when the guest changes CR3; the caller can then use v->arch.cr3
  * as the value to load into the host CR3 to schedule this vcpu */
--
generated by git-patchbot for /home/xen/git/xen.git#staging