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[PATCH v2 4/4] xen/arm64: constify is_32/64bit_domain() macro for CONFIG_ARM64_AARCH32=n


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
  • Date: Wed, 6 Aug 2025 09:49:43 +0000
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  • Cc: Grygorii Strashko <grygorii_strashko@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
  • Delivery-date: Wed, 06 Aug 2025 09:49:51 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Thread-index: AQHcBrdvUZwhp6UiF0OIwSDs4YZpHA==
  • Thread-topic: [PATCH v2 4/4] xen/arm64: constify is_32/64bit_domain() macro for CONFIG_ARM64_AARCH32=n

From: Grygorii Strashko <grygorii_strashko@xxxxxxxx>

Constify is_32/64bit_domain() macro for the case CONFIG_ARM64_AARCH32=n and
so allow compiler to opt out Aarch32 specific code.

Before (CONFIG_ARM64_AARCH32=y):
   text    data     bss     dec     hex filename
 859212  322404  270880 1452496  1629d0 xen-syms-before

After (CONFIG_ARM64_AARCH32=n):
   text    data     bss     dec     hex filename
 851256  322404  270880 1444540  160abc xen-syms-after

Signed-off-by: Grygorii Strashko <grygorii_strashko@xxxxxxxx>
---
v2:
- use IS_ENABLED(CONFIG_ARM64_AARCH32) instead of ifdefs

 xen/arch/arm/include/asm/arm64/domain.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/xen/arch/arm/include/asm/arm64/domain.h 
b/xen/arch/arm/include/asm/arm64/domain.h
index bebcbc582f97..70dfbeac7443 100644
--- a/xen/arch/arm/include/asm/arm64/domain.h
+++ b/xen/arch/arm/include/asm/arm64/domain.h
@@ -12,14 +12,16 @@ struct kernel_info;
  *
  * @d: pointer to the domain structure
  */
-#define is_32bit_domain(d) ((d)->arch.type == DOMAIN_32BIT)
+#define is_32bit_domain(d)                                                     
\
+        (IS_ENABLED(CONFIG_ARM64_AARCH32) && (d)->arch.type == DOMAIN_32BIT)
 
 /*
  * Returns true if guest execution state is AArch64
  *
  * @d: pointer to the domain structure
  */
-#define is_64bit_domain(d) ((d)->arch.type == DOMAIN_64BIT)
+#define is_64bit_domain(d)                                                     
\
+        (!IS_ENABLED(CONFIG_ARM64_AARCH32) || (d)->arch.type == DOMAIN_64BIT)
 
 /*
  * Arm64 declares AArch32 (32bit) Execution State support in the
-- 
2.34.1



 


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