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| author |   Helge Deller <deller@gmx.de> | 2022-09-13 08:51:10 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2022-09-15 07:59:37 +0200 |
| commit | 805ce8614958c925877ba6b6dc26cdf9f8800474 (patch) | |
| tree | 3969bbf8028f355dc280273c160b4fc4a98007bb | |
| parent | parisc: remove obsolete manual allocation aligning in iosapic (diff) | |
| download | linux-dev-805ce8614958c925877ba6b6dc26cdf9f8800474.tar.xz linux-dev-805ce8614958c925877ba6b6dc26cdf9f8800474.zip | |
parisc: Allow CONFIG_64BIT with ARCH=parisc
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+
| -rw-r--r-- | arch/parisc/Kconfig | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 9aede2447011..a98940e64243 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -224,8 +224,18 @@ 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" |