From: Helge Deller deller@gmx.de
commit 805ce8614958c925877ba6b6dc26cdf9f8800474 upstream.
The previous patch triggered a build failure for the debian kernel, which has CONFIG_64BIT enabled, uses the CROSS_COMPILER environment variable and uses ARCH=parisc to configure the kernel for 64-bit support.
This patch weakens the previous patch while keeping the recommended way to configure the kernel with: ARCH=parisc -> build 32-bit kernel ARCH=parisc64 -> build 64-bit kernel while adding the possibility for debian to configure a 64-bit kernel even if ARCH=parisc is set (PA8X00 CPU has to be selected and CONFIG_64BIT needs to be enabled).
The downside of this patch is, that we now have a small window open again where people may get it wrong: if they enable CONFIG_64BIT and try to compile with a 32-bit compiler.
Fixes: 3dcfb729b5f4 ("parisc: Make CONFIG_64BIT available for ARCH=parisc64 only") Signed-off-by: Helge Deller deller@gmx.de Cc: stable@vger.kernel.org # 5.15+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/Kconfig | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
--- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -225,8 +225,18 @@ config MLONGCALLS Enabling this option will probably slow down your kernel.
config 64BIT - def_bool "$(ARCH)" = "parisc64" + def_bool y if "$(ARCH)" = "parisc64" + bool "64-bit kernel" if "$(ARCH)" = "parisc" depends on PA8X00 + help + Enable this if you want to support 64bit kernel on PA-RISC platform. + + At the moment, only people willing to use more than 2GB of RAM, + or having a 64bit-only capable PA-RISC machine should say Y here. + + Since there is no 64bit userland on PA-RISC, there is no point to + enable this option otherwise. The 64bit kernel is significantly bigger + and slower than the 32bit one.
choice prompt "Kernel page size"