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Re: [PATCH v5 17/44] x86/boot: convert microcode loading to consume struct boot_info


  • To: Jason Andryuk <jason.andryuk@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>
  • Date: Wed, 9 Oct 2024 10:58:26 -0400
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  • Delivery-date: Wed, 09 Oct 2024 14:58:42 +0000
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On 10/8/24 08:50, Jason Andryuk wrote:
On 2024-10-07 17:22, Jason Andryuk wrote:
On 2024-10-06 17:49, Daniel P. Smith wrote:
@@ -205,20 +204,18 @@ static void __init microcode_scan_module(
  }
  static void __init microcode_grab_module(
-    unsigned long *module_map,
-    const multiboot_info_t *mbi)
+    unsigned long *module_map, struct boot_info *bi)
  {
-    module_t *mod = (module_t *)__va(mbi->mods_addr);
-
      if ( ucode_mod_idx < 0 )
-        ucode_mod_idx += mbi->mods_count;
-    if ( ucode_mod_idx <= 0 || ucode_mod_idx >= mbi->mods_count ||
+        ucode_mod_idx += bi->nr_modules;
+    if ( ucode_mod_idx <= 0 || ucode_mod_idx >= bi->nr_modules ||
           !__test_and_clear_bit(ucode_mod_idx, module_map) )
          goto scan;
-    ucode_mod = mod[ucode_mod_idx];
+    bi->mods[ucode_mod_idx].type = BOOTMOD_MICROCODE;
+    ucode_mod = *bi->mods[ucode_mod_idx].mod;

Why the dereference: *bi->mods[ucode_mod_idx].mod; ?  I don't think it should be there.

Oh, the next patch shows ucode_mod is not a pointer, so dereferencing is correct.   Sorry for the noise.

No worries.

v/r,
dps



 


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