[xen staging] x86: drop map-low-16Mb leftovers

[patchbot@xxxxxxx]

commit 442625ef10fb919b0b55658ecac87cf323fa5af8
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Sep 2 11:58:21 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Sep 2 11:58:21 2024 +0200

    x86: drop map-low-16Mb leftovers
    
    Prior work (e.g. cbabbc9f5659 ["x86/boot: Size the boot/directmap
    mappings dynamically"]) has fully eliminated that hardcoded boundary.
    Drop both the linker script assertion (the upper bound is now the stubs
    area) and the artificial extending of xen.efi's image size.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/xen.lds.S | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
index 9a1dfe1b34..d48de67cfd 100644
--- a/xen/arch/x86/xen.lds.S
+++ b/xen/arch/x86/xen.lds.S
@@ -359,14 +359,6 @@ SECTIONS
 
   DWARF2_DEBUG_SECTIONS
 
-#ifdef EFI
-  /* Trick the linker into setting the image size to no less than 16Mb. */
-  __image_end__ = .;
-  .pad ALIGN(__section_alignment__) : {
-    . = __image_end__ < __image_base__ + MB(16) ? ALIGN(MB(16)) : .;
-  }
-#endif
-
 #ifdef CONFIG_HYPERV_GUEST
   hv_hcall_page = ABSOLUTE(HV_HCALL_PAGE - XEN_VIRT_START + __XEN_VIRT_START);
 #endif
@@ -429,6 +421,3 @@ ASSERT((trampoline_end - trampoline_start) < 
TRAMPOLINE_SPACE - MBI_SPACE_MIN,
     "not enough room for trampoline and mbi data")
 ASSERT((wakeup_stack - wakeup_stack_start) >= WAKEUP_STACK_MIN,
     "wakeup stack too small")
-
-/* Plenty of boot code assumes that Xen isn't larger than 16M. */
-ASSERT(_end - _start <= MB(16), "Xen too large for early-boot assumptions")
--
generated by git-patchbot for /home/xen/git/xen.git#staging