From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Linus Torvalds <torvalds@linux-foundation.org>,
Nikolay Borisov <nik.borisov@suse.com>,
"Ahmed S. Darwish" <darwi@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
loongarch@lists.linux.dev,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@lists.linux-m68k.org,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@vger.kernel.org,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
linux-sh@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
sparclinux@vger.kernel.org, Richard Weinberger <richard@nod.at>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Johannes Berg <johannes@sipsolutions.net>,
linux-um@lists.infradead.org,
Richard Henderson <richard.henderson@linaro.org>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Chris Zankel <chris@zankel.net>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [patch 02/17] x86/cpu: Switch to arch_cpu_finalize_init()
Date: Wed, 14 Jun 2023 11:53:50 +0200 [thread overview]
Message-ID: <87legm8j4h.ffs@tglx> (raw)
In-Reply-To: <20230613224545.019583869@linutronix.de>
On Wed, Jun 14 2023 at 01:39, Thomas Gleixner wrote:
> + /*
> + * identify_boot_cpu() initialized SMT support information, let the
> + * core code know.
> + */
> + cpu_smt_check_topology();
> +
> + if (!IS_ENABLED(CONFIG_SMP)) {
> + pr_info("CPU: ");
> + print_cpu_info(&boot_cpu_data);
> + }
> +
> + arch_smt_update();
> +
> + cpu_select_mitigations();
That's the wrong order. mitigations must come before the smt
update. Thanks to Boris for spotting it.
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Linus Torvalds <torvalds@linux-foundation.org>,
Nikolay Borisov <nik.borisov@suse.com>,
"Ahmed S. Darwish" <darwi@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
loongarch@lists.linux.dev,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@lists.linux-m68k.org,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@vger.kernel.org,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
linux-sh@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
sparclinux@vger.kernel.org, Richard Weinberger <richard@nod.at>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Johannes Berg <johannes@sipsolutions.net>,
linux-um@lists.infradead.org,
Richard Henderson <richard.henderson@linaro.org>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Chris Zankel <chris@zankel.net>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [patch 02/17] x86/cpu: Switch to arch_cpu_finalize_init()
Date: Wed, 14 Jun 2023 11:53:50 +0200 [thread overview]
Message-ID: <87legm8j4h.ffs@tglx> (raw)
In-Reply-To: <20230613224545.019583869@linutronix.de>
On Wed, Jun 14 2023 at 01:39, Thomas Gleixner wrote:
> + /*
> + * identify_boot_cpu() initialized SMT support information, let the
> + * core code know.
> + */
> + cpu_smt_check_topology();
> +
> + if (!IS_ENABLED(CONFIG_SMP)) {
> + pr_info("CPU: ");
> + print_cpu_info(&boot_cpu_data);
> + }
> +
> + arch_smt_update();
> +
> + cpu_select_mitigations();
That's the wrong order. mitigations must come before the smt
update. Thanks to Boris for spotting it.
_______________________________________________
linux-um mailing list
linux-um@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-um
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Linus Torvalds <torvalds@linux-foundation.org>,
Nikolay Borisov <nik.borisov@suse.com>,
"Ahmed S. Darwish" <darwi@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
loongarch@lists.linux.dev,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@lists.linux-m68k.org,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@vger.kernel.org,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
linux-sh@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
sparclinux@vger.kernel.org, Richard Weinberger <richard@nod.at>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Johannes Berg <johannes@sipsolutions.net>,
linux-um@lists.infradead.org,
Richard Henderson <richard.henderson@linaro.org>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Chris Zankel <chris@zankel.net>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [patch 02/17] x86/cpu: Switch to arch_cpu_finalize_init()
Date: Wed, 14 Jun 2023 11:53:50 +0200 [thread overview]
Message-ID: <87legm8j4h.ffs@tglx> (raw)
In-Reply-To: <20230613224545.019583869@linutronix.de>
On Wed, Jun 14 2023 at 01:39, Thomas Gleixner wrote:
> + /*
> + * identify_boot_cpu() initialized SMT support information, let the
> + * core code know.
> + */
> + cpu_smt_check_topology();
> +
> + if (!IS_ENABLED(CONFIG_SMP)) {
> + pr_info("CPU: ");
> + print_cpu_info(&boot_cpu_data);
> + }
> +
> + arch_smt_update();
> +
> + cpu_select_mitigations();
That's the wrong order. mitigations must come before the smt
update. Thanks to Boris for spotting it.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-06-14 9:54 UTC|newest]
Thread overview: 152+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-13 23:39 [patch 00/17] init, treewide, x86: Cleanup check_bugs() and start sanitizing the x86 boot process Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` [patch 01/17] init: Provide arch_cpu_finalize_init() Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 9:28 ` Borislav Petkov
2023-06-14 9:28 ` Borislav Petkov
2023-06-14 9:28 ` Borislav Petkov
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 02/17] x86/cpu: Switch to arch_cpu_finalize_init() Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 9:53 ` Thomas Gleixner [this message]
2023-06-14 9:53 ` Thomas Gleixner
2023-06-14 9:53 ` Thomas Gleixner
2023-06-14 10:39 ` Borislav Petkov
2023-06-14 10:39 ` Borislav Petkov
2023-06-14 10:39 ` Borislav Petkov
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 03/17] ARM: cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:27 ` [patch 03/17] " Philippe Mathieu-Daudé
2023-06-25 21:27 ` Philippe Mathieu-Daudé
2023-06-25 21:27 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 04/17] ia64/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:24 ` [patch 04/17] " Philippe Mathieu-Daudé
2023-06-25 21:24 ` Philippe Mathieu-Daudé
2023-06-25 21:24 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 05/17] loongarch/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:24 ` [patch 05/17] " Philippe Mathieu-Daudé
2023-06-25 21:24 ` Philippe Mathieu-Daudé
2023-06-25 21:24 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 06/17] m68k/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 9:22 ` Geert Uytterhoeven
2023-06-14 9:22 ` Geert Uytterhoeven
2023-06-14 9:22 ` Geert Uytterhoeven
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 07/17] mips/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:25 ` [patch 07/17] " Philippe Mathieu-Daudé
2023-06-25 21:25 ` Philippe Mathieu-Daudé
2023-06-25 21:25 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 08/17] sh/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:29 ` [patch 08/17] " Philippe Mathieu-Daudé
2023-06-25 21:29 ` Philippe Mathieu-Daudé
2023-06-25 21:29 ` Philippe Mathieu-Daudé
2023-06-25 21:45 ` John Paul Adrian Glaubitz
2023-06-25 21:45 ` John Paul Adrian Glaubitz
2023-06-25 21:45 ` John Paul Adrian Glaubitz
2023-06-13 23:39 ` [patch 09/17] sparc/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 20:41 ` Sam Ravnborg
2023-06-14 20:41 ` Sam Ravnborg
2023-06-14 20:41 ` Sam Ravnborg
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:30 ` [patch 09/17] " Philippe Mathieu-Daudé
2023-06-25 21:30 ` Philippe Mathieu-Daudé
2023-06-25 21:30 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 10/17] um/cpu: " Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 6:51 ` Richard Weinberger
2023-06-14 6:51 ` Richard Weinberger
2023-06-14 6:51 ` Richard Weinberger
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:28 ` [patch 10/17] " Philippe Mathieu-Daudé
2023-06-25 21:28 ` Philippe Mathieu-Daudé
2023-06-25 21:28 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 11/17] init: Remove check_bugs() leftovers Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 6:14 ` Richard Henderson
2023-06-14 6:14 ` Richard Henderson
2023-06-14 6:14 ` Richard Henderson
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-25 21:31 ` [patch 11/17] " Philippe Mathieu-Daudé
2023-06-25 21:31 ` Philippe Mathieu-Daudé
2023-06-25 21:31 ` Philippe Mathieu-Daudé
2023-06-13 23:39 ` [patch 12/17] init: Invoke arch_cpu_finalize_init() earlier Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-15 21:44 ` Edgecombe, Rick P
2023-06-15 21:44 ` Edgecombe, Rick P
2023-06-15 21:44 ` Edgecombe, Rick P
2023-06-15 22:03 ` Thomas Gleixner
2023-06-15 22:03 ` Thomas Gleixner
2023-06-15 22:03 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 13/17] init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init() Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-21 17:12 ` [patch 13/17] " Tom Lendacky
2023-06-21 17:12 ` Tom Lendacky
2023-06-21 17:12 ` Tom Lendacky
2023-06-13 23:39 ` [patch 14/17] x86/init: Initialize signal frame size late Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 15/17] x86/fpu: Remove cpuinfo argument from init functions Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 16/17] x86/fpu: Mark init functions __init Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-06-13 23:39 ` [patch 17/17] x86/fpu: Move FPU initialization into arch_cpu_finalize_init() Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-13 23:39 ` Thomas Gleixner
2023-06-14 5:03 ` Chang S. Bae
2023-06-14 5:03 ` Chang S. Bae
2023-06-14 5:03 ` Chang S. Bae
2023-06-14 9:52 ` Thomas Gleixner
2023-06-14 9:52 ` Thomas Gleixner
2023-06-14 9:52 ` Thomas Gleixner
2023-06-16 9:24 ` [tip: x86/boot] " tip-bot2 for Thomas Gleixner
2023-09-01 17:30 ` [patch 17/17] " Guenter Roeck
2023-09-01 17:30 ` Guenter Roeck
2023-09-01 17:30 ` Guenter Roeck
2023-09-01 18:00 ` Nikolay Borisov
2023-09-01 18:00 ` Nikolay Borisov
2023-09-01 18:00 ` Nikolay Borisov
2023-09-01 18:21 ` Guenter Roeck
2023-09-01 18:21 ` Guenter Roeck
2023-09-01 18:21 ` Guenter Roeck
2023-09-01 18:02 ` Nikolay Borisov
2023-09-01 18:02 ` Nikolay Borisov
2023-09-01 18:02 ` Nikolay Borisov
2023-09-01 21:09 ` Guenter Roeck
2023-09-01 21:09 ` Guenter Roeck
2023-09-01 21:09 ` Guenter Roeck
2023-06-28 3:38 ` [patch 00/17] init, treewide, x86: Cleanup check_bugs() and start sanitizing the x86 boot process Jan Engelhardt
2023-06-28 3:38 ` Jan Engelhardt
2023-06-28 3:38 ` Jan Engelhardt
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