From 5c8b0cbd9d6bac5f40943b5a7d8eac8cb86cbe7f Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 28 Sep 2020 14:06:50 +0100 Subject: [PATCH] arm64: Pull in task_stack_page() to Spectre-v4 mitigation code The kbuild robot reports that we're relying on an implicit inclusion to get a definition of task_stack_page() in the Spectre-v4 mitigation code, which is not always in place for some configurations: | arch/arm64/kernel/proton-pack.c:329:2: error: implicit declaration of function 'task_stack_page' [-Werror,-Wimplicit-function-declaration] | task_pt_regs(task)->pstate |= val; | ^ | arch/arm64/include/asm/processor.h:268:36: note: expanded from macro 'task_pt_regs' | ((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1) | ^ | arch/arm64/kernel/proton-pack.c:329:2: note: did you mean 'task_spread_page'? Add the missing include to fix the build error. Fixes: a44acf477220 ("arm64: Move SSBD prctl() handler alongside other spectre mitigation code") Reported-by: Anthony Steinhauser Reported-by: kernel test robot Link: https://lore.kernel.org/r/202009260013.Ul7AD29w%lkp@intel.com Signed-off-by: Will Deacon --- arch/arm64/kernel/proton-pack.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index 1fbaa0240d4c..16c9a095a746 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include -- 2.49.0