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Peter Anvin" , x86@kernel.org, Martin Liska , Jiri Slaby Subject: [PATCH 12/46] x86/paravirt, lto: Mark native_steal_clock() as __visible_on_lto Date: Mon, 14 Nov 2022 12:43:10 +0100 Message-Id: <20221114114344.18650-13-jirislaby@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221114114344.18650-1-jirislaby@kernel.org> References: <20221114114344.18650-1-jirislaby@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749471959933885345?= X-GMAIL-MSGID: =?utf-8?q?1749471959933885345?= From: Andi Kleen Symbols referenced from assembler (either directly or e.f. from DEFINE_STATIC_KEY()) need to be global and visible in gcc LTO because they could end up in a different object file than the assembler. This can lead to linker errors without this patch. So mark native_steal_clock() as __visible_on_lto. [js] use __visible_on_lto Cc: Juergen Gross Cc: "Srivatsa S. Bhat Cc: Alexey Makhalov Cc: VMware PV-Drivers Reviewers Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: x86@kernel.org Signed-off-by: Andi Kleen Signed-off-by: Martin Liska Signed-off-by: Jiri Slaby --- arch/x86/kernel/paravirt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 7ca2d46c08cc..27a537cd4b0e 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -120,7 +120,7 @@ unsigned int paravirt_patch(u8 type, void *insn_buff, unsigned long addr, struct static_key paravirt_steal_enabled; struct static_key paravirt_steal_rq_enabled; -static u64 native_steal_clock(int cpu) +__visible_on_lto u64 native_steal_clock(int cpu) { return 0; }