From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH v3 19/51] cpuidle,intel_idle: Fix CPUIDLE_FLAG_INIT_XSTATE Date: Thu, 12 Jan 2023 20:43:33 +0100 Message-ID: <20230112195540.494977795@infradead.org> References: <20230112194314.845371875@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 3D6694159B DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org B61A7414E8 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 6B18F41186 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 0B2E441057 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=Pd5LzlqFWhoOW/IghE5YxUytF5dcFo0PCwRqcxBfbik=; b=SlXzMGW647wjdHfeIxA3BURo/L V57eNszB4X9M2Aw7LuPxwmPByIMO6ZKJ+B9QS4/L40MIuNzW7LoV2ieaE68bBcSd3vNab1fb0CJg0 QIScqqs4INqipCz162dj8G6WADgGw/yyJX1KvXDDp9KvqhFFRcEFT/UBl+i0lGVjxQCePgE7wrcjD zg1nhaAwVcqC0aWlZyNbqIQdvsg//4TbBOPEGhSkO9DKH/bfCQcGFEEufPy7Ul19FcRzSlIK8yvAr +j/SelXlIya73f2ebWEWnXnVBv+DvQiepu+aP4ZuJNc4l00+RAhCrFLr4FHOiR17EpRimSqj9p8nr 1gOjKv7g==; List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" To: peterz@infradead.org Cc: juri.lelli@redhat.com, "Rafael J. Wysocki" , rafael@kernel.org, catalin.marinas@arm.com, linus.walleij@linaro.org, nsekhar@ti.com, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-arch@vger.kernel.org, linux-samsung-soc@vger.kernel.org, vincent.guittot@linaro.org, mpe@ellerman.id.au, chenhuacai@kernel.org, christophe.leroy@csgroup.eu, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, vgupta@kernel.org, mattst88@gmail.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, Sascha Hauer , linux-um@lists.infradead.org, npiggin@gmail.com, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, andreyknvl@gmail.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel. vmlinux.o: warning: objtool: intel_idle_s2idle+0xd5: call to fpu_idle_fpregs() leaves .noinstr.text section vmlinux.o: warning: objtool: intel_idle_xstate+0x11: call to fpu_idle_fpregs() leaves .noinstr.text section vmlinux.o: warning: objtool: fpu_idle_fpregs+0x9: call to xfeatures_in_use() leaves .noinstr.text section Signed-off-by: Peter Zijlstra (Intel) Acked-by: Rafael J. Wysocki Acked-by: Frederic Weisbecker Tested-by: Tony Lindgren Tested-by: Ulf Hansson --- arch/x86/include/asm/fpu/xcr.h | 4 ++-- arch/x86/include/asm/special_insns.h | 2 +- arch/x86/kernel/fpu/core.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) --- a/arch/x86/include/asm/fpu/xcr.h +++ b/arch/x86/include/asm/fpu/xcr.h @@ -5,7 +5,7 @@ #define XCR_XFEATURE_ENABLED_MASK 0x00000000 #define XCR_XFEATURE_IN_USE_MASK 0x00000001 -static inline u64 xgetbv(u32 index) +static __always_inline u64 xgetbv(u32 index) { u32 eax, edx; @@ -27,7 +27,7 @@ static inline void xsetbv(u32 index, u64 * * Callers should check X86_FEATURE_XGETBV1. */ -static inline u64 xfeatures_in_use(void) +static __always_inline u64 xfeatures_in_use(void) { return xgetbv(XCR_XFEATURE_IN_USE_MASK); } --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -295,7 +295,7 @@ static inline int enqcmds(void __iomem * return 0; } -static inline void tile_release(void) +static __always_inline void tile_release(void) { /* * Instruction opcode for TILERELEASE; supported in binutils --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -856,12 +856,12 @@ int fpu__exception_code(struct fpu *fpu, * Initialize register state that may prevent from entering low-power idle. * This function will be invoked from the cpuidle driver only when needed. */ -void fpu_idle_fpregs(void) +noinstr void fpu_idle_fpregs(void) { /* Note: AMX_TILE being enabled implies XGETBV1 support */ if (cpu_feature_enabled(X86_FEATURE_AMX_TILE) && (xfeatures_in_use() & XFEATURE_MASK_XTILE)) { tile_release(); - fpregs_deactivate(¤t->thread.fpu); + __this_cpu_write(fpu_fpregs_owner_ctx, NULL); } }