diff mbox series

[2/2] sparc64: make 32-bit userland support configurable

Message ID 20260927005837.8402-3-kaloz@kernel.org
State New
Headers show
Series sparc64: CONFIG_COMPAT=n build fix and prompt | expand

Commit Message

Imre Kaloz Sept. 27, 2026, 12:58 a.m. UTC 
CONFIG_COMPAT has no prompt on sparc64, so a kernel that will only ever
run 64-bit binaries still carries the 32-bit system call table and entry
path and the compat signal, ptrace, ioctl and System V IPC translation
layers. Give it a prompt, keeping the default, so it can be left out;
in a sparc64_defconfig build that makes the kernel about 88 KiB smaller.

Signed-off-by: Imre Kaloz <kaloz@kernel.org>
---
 arch/sparc/Kconfig | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ab77d3f2536e..3779fb3169ab 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -447,13 +447,19 @@  config SPARC64_PCI_MSI
 endmenu
 
 config COMPAT
-	bool
+	bool "Kernel support for 32-bit SPARC binaries"
 	depends on SPARC64
 	depends on !LD_IS_LLD
 	default y
 	select HAVE_UID16
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
+	help
+	  Run 32-bit SPARC binaries on a 64-bit kernel. This builds the
+	  32-bit system call table and entry path, and the compat signal,
+	  ptrace, ioctl and System V IPC translation layers.
+
+	  If unsure, say Y.
 
 config ARCH_CC_CAN_LINK
 	bool