| Message ID | 20201221204004.16138-1-vitaly.wool@konsulko.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arch/Kconfig: JUMP_LABEL should depend on !XIP | expand |
diff --git a/arch/Kconfig b/arch/Kconfig index 56b6ccc0e32d..88632c9588ae 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -81,6 +81,7 @@ config JUMP_LABEL bool "Optimize very unlikely/likely branches" depends on HAVE_ARCH_JUMP_LABEL depends on CC_HAS_ASM_GOTO + depends on !XIP_KERNEL help This option enables a transparent branch optimization that makes certain almost-always-true or almost-always-false branch
There's no point in trying to optimize the code when the code is executed from a read-only medium (e. g. NOR flash) as in the XIP case. Moreover, trying to do so in a XIP kernel may result in faults and kernel crashes so let's explicitly disallow JUMP_LABEL if XIP_KERNEL configuration option is set. Signed-off-by: Vitaly Wool <vitaly.wool@konsulko.com> --- arch/Kconfig | 1 + 1 file changed, 1 insertion(+)