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| author |   Michael Ellerman <mpe@ellerman.id.au> | 2015-05-11 20:01:02 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-05-11 20:01:02 +1000 |
| commit | e0d0059169945c8ee16790d2e7244cea397dfd56 (patch) | |
| tree | db50205e4996c17264c9279b1bc7370fdbaf9802 /arch/powerpc/platforms/Kconfig.cputype | |
| parent | powerpc/vdso: Combine start/size variables (diff) | |
| download | wireguard-linux-e0d0059169945c8ee16790d2e7244cea397dfd56.tar.xz wireguard-linux-e0d0059169945c8ee16790d2e7244cea397dfd56.zip | |
powerpc/vdso: Disable building the 32-bit VDSO on little endian
The only little endian configuration we support is ppc64le. As such if
we're building little endian we don't need a 32-bit VDSO, because there
is no 32-bit userspace.
This patch is a fairly ugly mess of #ifdefs, but is the minimal logic
required to disable the 32-bit VDSO. We can hopefully clean up the
result in future with some further refactoring.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 7264e91190be..724ecc791404 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -405,6 +405,16 @@ config PPC_DOORBELL endmenu +config VDSO32 + def_bool y + depends on PPC32 || CPU_BIG_ENDIAN + help + This symbol controls whether we build the 32-bit VDSO. We obviously + want to do that if we're building a 32-bit kernel. If we're building + a 64-bit kernel then we only want a 32-bit VDSO if we're building for + big endian. That is because the only little endian configuration we + support is ppc64le which is 64-bit only. + choice prompt "Endianness selection" default CPU_BIG_ENDIAN |