[PATCH 04/18] x86: Always inline task_size_max()

From: Peter Zijlstra <peterz@infradead.org>
To: jpoimboe@redhat.com, tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
	joro@8bytes.org, boris.ostrovsky@oracle.com, jgross@suse.com,
	x86@kernel.org, mbenes@suse.com
Subject: [PATCH 04/18] x86: Always inline task_size_max()
Date: Mon, 21 Jun 2021 13:12:37 +0200	[thread overview]
Message-ID: <20210621120120.682468274@infradead.org> (raw)
In-Reply-To: 20210621111233.344964031@infradead.org

vmlinux.o: warning: objtool: handle_bug()+0x10: call to task_size_max() leaves .noinstr.text section

When #UD isn't a BUG, we shouldn't violate noinstr (we'll still
probably die, but that's another story).

Fixes: 025768a966a3 ("x86/cpu: Use alternative to generate the TASK_SIZE_MAX constant")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/include/asm/page_64.h |    2 +-
 arch/x86/kernel/traps.c        |    9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

--- a/arch/x86/include/asm/page_64.h
+++ b/arch/x86/include/asm/page_64.h
@@ -75,7 +75,7 @@ void copy_page(void *to, void *from);
  *
  * With page table isolation enabled, we map the LDT in ... [stay tuned]
  */
-static inline unsigned long task_size_max(void)
+static __always_inline unsigned long task_size_max(void)
 {
 	unsigned long ret;
 


