[mini-os master] suspend: drop crazy pfn handling for PVH

[patchbot@xxxxxxx]

commit 98ccf2e05d28d56f8d0bb4f97c3bdfa313bb5cde
Author:     Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Tue Jun 24 14:31:45 2025 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jun 24 14:31:45 2025 +0200

    suspend: drop crazy pfn handling for PVH
    
    Suspend for PVH is doing some crazy stuff with the Xenstore and console
    PFNs:
    
    - In arch_pre_suspend() the PFNs are "translated" to MFNs, even if that
       translation is a nop.
    - The result is stored via start_info_ptr, which points to a struct
      start_info only in case of PV mode.
    - After resuming or a cancelled suspend, the PFNs are retrieved again
      and "translated".
    - The "MFNs" are stored again via start_info_ptr, which is still not
      pointing at a struct start_info, and from where the data is never
      read again after that.
    
    Drop all of that completely.
    
    Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
    Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
 arch/x86/setup.c | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/arch/x86/setup.c b/arch/x86/setup.c
index b613083..e30eb06 100644
--- a/arch/x86/setup.c
+++ b/arch/x86/setup.c
@@ -227,17 +227,6 @@ void arch_pre_suspend(void)
         virt_to_pfn(mfn_to_virt(start_info_ptr->store_mfn));
     start_info_ptr->console.domU.mfn =
         virt_to_pfn(mfn_to_virt(start_info_ptr->console.domU.mfn));
-#else
-    uint64_t store_v;
-    uint64_t console_v;
-
-    if( hvm_get_parameter(HVM_PARAM_STORE_PFN, &store_v) )
-        BUG();
-    start_info_ptr->store_mfn = store_v;
-
-    if( hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &console_v) )
-        BUG();
-    start_info_ptr->console.domU.mfn = console_v;
 #endif
     unmap_shared_info();
 
@@ -262,17 +251,6 @@ void arch_post_suspend(int canceled)
     } else {
         memcpy(&start_info, start_info_ptr, sizeof(start_info_t));
     }
-#else
-    uint64_t store_v;
-    uint64_t console_v;
-
-    if (hvm_get_parameter(HVM_PARAM_STORE_PFN, &store_v))
-        BUG();
-    start_info_ptr->store_mfn = pfn_to_mfn(store_v);
-
-    if (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &console_v))
-        BUG();
-    start_info_ptr->console.domU.mfn = pfn_to_mfn(console_v);
 #endif
 
     HYPERVISOR_shared_info = map_shared_info((void*) start_info_ptr);
--
generated by git-patchbot for /home/xen/git/mini-os.git#master