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authorChristophe Leroy <christophe.leroy@csgroup.eu>2022-02-15 13:41:02 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2022-02-16 23:25:11 +1100
commita257cacc38718c83cee003487e03197f237f5c3f (patch)
treea960674ea9bbc43410157051a44a391c3b767b39 /arch/parisc/Kconfig
parent41a88b45479da873bfc5d29ba1a545a780c5329a (diff)
asm-generic: Define CONFIG_HAVE_FUNCTION_DESCRIPTORS
Replace HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR by a config option named CONFIG_HAVE_FUNCTION_DESCRIPTORS and use it instead of 'dereference_function_descriptor' macro to know whether an arch has function descriptors. To limit churn in one of the following patches, use an #ifdef/#else construct with empty first part instead of an #ifndef in asm-generic/sections.h On powerpc, make sure the config option matches the ABI used by the compiler with a BUILD_BUG_ON() and add missing _CALL_ELF=2 when calling 'sparse' so that sparse sees the same piece of code as GCC. And include a helper to check whether an arch has function descriptors or not : have_function_descriptors() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/4a0f11fb0ea74a3197bc44dd7ba25e53a24fd03d.1644928018.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/parisc/Kconfig')
-rw-r--r--arch/parisc/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 43c1c880def6..82e7ab1a9764 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -69,6 +69,7 @@ config PARISC
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
select TRACE_IRQFLAGS_SUPPORT
+ select HAVE_FUNCTION_DESCRIPTORS if 64BIT
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used