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[PATCH v5 13/44] x86/boot: update struct boot_module on module relocation


  • To: xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>
  • Date: Sun, 6 Oct 2024 17:49:24 -0400
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  • Cc: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, jason.andryuk@xxxxxxx, christopher.w.clark@xxxxxxxxx, stefano.stabellini@xxxxxxx, Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Sun, 06 Oct 2024 21:57:17 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

When a boot module is relocated, ensure struct boot_module start and size
fields are updated along with early_mod.

Signed-off-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
 xen/arch/x86/setup.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 093a4f5380d1..f968758048ed 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1392,8 +1392,11 @@ void asmlinkage __init noreturn __start_xen(unsigned 
long mbi_p)
          * respective reserve_e820_ram() invocation below. No need to
          * query efi_boot_mem_unused() here, though.
          */
-        bi->mods[xen].mod->mod_start = virt_to_mfn(_stext);
-        bi->mods[xen].mod->mod_end = __2M_rwdata_end - _stext;
+        bi->mods[xen].start = virt_to_mfn(_stext);
+        bi->mods[xen].size = __2M_rwdata_end - _stext;
+
+        bi->mods[xen].mod->mod_start = bi->mods[xen].start;
+        bi->mods[xen].mod->mod_end = bi->mods[xen].size;
     }
 
     bi->mods[0].headroom =
-- 
2.30.2




 


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