From: Xi Ruoyao <xry111@xry111.site>
To: Youling Tang <tangyouling@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>
Cc: linux-kernel@vger.kernel.org, loongarch@lists.linux.dev,
Xuerui Wang <kernel@xen0n.name>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Jinyang He <hejinyang@loongson.cn>
Subject: Re: [PATCH 1/3] LoongArch: tools: Add relocs tool support
Date: Sat, 03 Sep 2022 18:49:14 +0800 [thread overview]
Message-ID: <78a4a6b0970c309daa336a2329e69d28df486552.camel@xry111.site> (raw)
In-Reply-To: <f0e77716-9533-724a-2ea9-86bc5b52066c@loongson.cn>
On Sat, 2022-09-03 at 09:57 +0800, Youling Tang wrote:
> > > Unlike (pre-r6) MIPS, LoongArch has a complete support for PIC, and
> > > currently LoongArch toolchain always produces PIC (except, if -Wa,-mla-
> > > {local,global}-with-abs or la.abs macros are used explicitly).
> > >
> > > So would it be easier to review and correct the uses of "la.abs" in the
> > > code, and make the main kernel image a real PIE? Then we can load it
> > > everywhere w/o any need to do relocation at load time.
>
> At the beginning I also wanted to make the main kernel image a real PIE
> and tried it, some of the "la.abs" can be modified, but I encountered
> difficulties in modifying the exception handling code part, the kernel
> will not boot after modification :(, I will continue to work hard try.
I just tried the same thing and get the same result :(. Will spend
several hours reading the LoongArch manual about exception...
--
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University
next prev parent reply other threads:[~2022-09-03 10:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 10:08 [PATCH 0/3] Add kernel relocation and KASLR support Youling Tang
2022-09-02 10:08 ` [PATCH 1/3] LoongArch: tools: Add relocs tool support Youling Tang
2022-09-02 11:10 ` Xi Ruoyao
2022-09-02 11:27 ` Xi Ruoyao
2022-09-03 1:57 ` Youling Tang
2022-09-03 10:49 ` Xi Ruoyao [this message]
2022-09-03 16:23 ` Jinyang He
2022-09-03 16:53 ` Xi Ruoyao
2022-09-05 2:52 ` Youling Tang
2022-09-06 2:16 ` Youling Tang
2022-09-06 5:17 ` Xi Ruoyao
2022-09-07 10:19 ` Youling Tang
2022-09-08 2:44 ` Youling Tang
2022-09-08 8:01 ` Youling Tang
2022-09-22 11:19 ` Xi Ruoyao
2022-09-23 9:56 ` Youling Tang
2022-09-05 1:52 ` Youling Tang
2022-09-02 10:08 ` [PATCH 2/3] LoongArch: Add support for kernel relocation Youling Tang
2022-09-02 10:08 ` [PATCH 3/3] LoongArch: Add support for kernel address space layout randomization (KASLR) Youling Tang
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