[xen staging] xen/x86: Drop useless non-Kconfig CONFIG_* variables

[patchbot@xxxxxxx]

commit 2d082710f7820f4556bd96320db529d556ba9481
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue May 21 18:07:09 2024 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue May 28 17:26:39 2024 +0100

    xen/x86: Drop useless non-Kconfig CONFIG_* variables
    
    These are all either completely unused, or do nothing useful.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Release-acked-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 xen/arch/x86/include/asm/config.h | 2 --
 xen/include/xen/acpi.h            | 9 ---------
 2 files changed, 11 deletions(-)

diff --git a/xen/arch/x86/include/asm/config.h 
b/xen/arch/x86/include/asm/config.h
index ab7288cb36..2a260a2581 100644
--- a/xen/arch/x86/include/asm/config.h
+++ b/xen/arch/x86/include/asm/config.h
@@ -20,7 +20,6 @@
 #define BITS_PER_XEN_ULONG BITS_PER_LONG
 
 #define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 1
-#define CONFIG_DISCONTIGMEM 1
 #define CONFIG_NUMA_EMU 1
 
 #define CONFIG_PAGEALLOC_MAX_ORDER (2 * PAGETABLE_ORDER)
@@ -30,7 +29,6 @@
 /* Intel P4 currently has largest cache line (L2 line size is 128 bytes). */
 #define CONFIG_X86_L1_CACHE_SHIFT 7
 
-#define CONFIG_ACPI_SRAT 1
 #define CONFIG_ACPI_CSTATE 1
 
 #define CONFIG_WATCHDOG 1
diff --git a/xen/include/xen/acpi.h b/xen/include/xen/acpi.h
index e78e7e7852..bc4818c943 100644
--- a/xen/include/xen/acpi.h
+++ b/xen/include/xen/acpi.h
@@ -140,15 +140,6 @@ int get_cpu_id(u32 acpi_id);
 unsigned int acpi_register_gsi (u32 gsi, int edge_level, int active_high_low);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
-/*
- * This function undoes the effect of one call to acpi_register_gsi().
- * If this matches the last registration, any IRQ resources for gsi
- * are freed.
- */
-#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
-void acpi_unregister_gsi (u32 gsi);
-#endif
-
 #ifdef CONFIG_ACPI_CSTATE
 /*
  * max_cstate sets the highest legal C-state.
--
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