linux-kernel - Re: [PATCH v4 5/5] LoongArch: Add support for kernel address space layout randomization (KASLR)

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Message-ID: <f3cf8395-b4fa-4530-0702-2d5a01dd06f4@loongson.cn>
Date:   Fri, 17 Feb 2023 16:24:32 +0800
From:   Youling Tang <tangyouling@...ngson.cn>
To:     Xi Ruoyao <xry111@...111.site>
Cc:     Huacai Chen <chenhuacai@...nel.org>,
        Jinyang He <hejinyang@...ngson.cn>,
        Xuerui Wang <kernel@...0n.name>, loongarch@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/5] LoongArch: Add support for kernel address space
 layout randomization (KASLR)


On 02/17/2023 04:09 PM, Xi Ruoyao wrote:
> On Fri, 2023-02-10 at 16:47 +0800, Youling Tang wrote:
>
>> +               /* Sync the caches ready for execution of new kernel
>> */
>> +               __asm__ __volatile__ (
>> +                       "ibar 0 \t\n"
>> +                       "dbar 0 \t\n");
>
> I think we should add ::: "memory" here to prevent a future compiler
> from being too smart.
Got it.

Thanks,
Youling

>
> Otherwise LGTM.
>