From: Thomas Gleixner <tglx@linutronix.de>
To: Nikolay Borisov <nik.borisov@suse.com>, x86@kernel.org
Cc: linux-kernel@vger.kernel.org, mhocko@suse.com, jslaby@suse.cz,
Nikolay Borisov <nik.borisov@suse.com>
Subject: Re: [PATCH 3/3] x86: Disable running 32bit processes if ia32_disabled is passed
Date: Wed, 07 Jun 2023 14:55:51 +0200 [thread overview]
Message-ID: <87cz27juso.ffs@tglx> (raw)
In-Reply-To: <87legvjxat.ffs@tglx>
On Wed, Jun 07 2023 at 14:01, Thomas Gleixner wrote:
> On Wed, Jun 07 2023 at 10:29, Nikolay Borisov wrote:
>> @@ -2368,4 +2373,7 @@ void arch_smt_update(void)
>> cpu_bugs_smt_update();
>> /* Check whether IPI broadcasting can be enabled */
>> apic_smt_update();
>> + if (ia32_disabled)
>> + on_each_cpu(remove_user32cs_from_gdt, NULL, 1);
My brain based compiler tells me, that this breaks the 32bit build and
the 64bit build with CONFIG_IA32_EMULATION=n. I'm pretty confident that
a real compiler will agree.
next prev parent reply other threads:[~2023-06-07 12:56 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 7:29 [RFC PATCH 0/3] Add ability to disable ia32 at boot time Nikolay Borisov
2023-06-07 7:29 ` [PATCH 1/3] x86: Introduce ia32_disabled boot parameter Nikolay Borisov
2023-06-07 8:55 ` Thomas Gleixner
2023-06-07 7:29 ` [PATCH 2/3] x86/entry: Disable IA32 syscalls in the presence of ia32_disabled Nikolay Borisov
2023-06-07 9:11 ` Thomas Gleixner
2023-06-08 3:18 ` Brian Gerst
2023-06-07 7:29 ` [PATCH 3/3] x86: Disable running 32bit processes if ia32_disabled is passed Nikolay Borisov
2023-06-07 12:01 ` Thomas Gleixner
2023-06-07 12:19 ` Nikolay Borisov
2023-06-07 12:53 ` Thomas Gleixner
2023-06-07 13:38 ` Nikolay Borisov
2023-06-07 14:49 ` Thomas Gleixner
2023-06-07 17:25 ` Andrew Cooper
2023-06-07 21:52 ` Thomas Gleixner
2023-06-07 23:43 ` Andrew Cooper
2023-06-08 0:25 ` Thomas Gleixner
2023-06-08 6:16 ` Jiri Slaby
2023-06-08 6:36 ` Jiri Slaby
2023-06-08 15:30 ` Thomas Gleixner
2023-06-08 15:32 ` Andrew Cooper
2023-06-08 6:29 ` Jiri Slaby
2023-06-08 11:25 ` Andrew Cooper
2023-06-08 15:56 ` Thomas Gleixner
2023-06-08 21:29 ` Nikolay Borisov
2023-06-07 12:55 ` Thomas Gleixner [this message]
2023-06-08 4:37 ` Brian Gerst
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