ailto:edk2-devel-boun...@lists.01.org] On Behalf Of
>> >> Ard Biesheuvel
>> >> Sent: Monday, June 11, 2018 4:53 PM
>> >> To: Gao, Liming
>> >> Cc: edk2-devel@lists.01.org; ler...@redhat.com;
>> >> zenith...@users.sourceforge.net
>> &
iesheu...@linaro.org]
> Sent: Tuesday, June 12, 2018 12:04 AM
> To: Gao, Liming
> Cc: edk2-devel@lists.01.org; ler...@redhat.com;
> zenith...@users.sourceforge.net
> Subject: Re: [edk2] [PATCH] BaseTools/tools_def IA32: disable PIE code
> generation explicitly
>
> On 11 J
al Message-
>> From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Ard
>> Biesheuvel
>> Sent: Monday, June 11, 2018 4:53 PM
>> To: Gao, Liming
>> Cc: edk2-devel@lists.01.org; ler...@redhat.com;
>> zenith...@users.sourceforge.net
>>
To: Gao, Liming
> Cc: edk2-devel@lists.01.org; ler...@redhat.com;
> zenith...@users.sourceforge.net
> Subject: Re: [edk2] [PATCH] BaseTools/tools_def IA32: disable PIE code
> generation explicitly
>
> On 11 June 2018 at 10:38, Gao, Liming wrote:
> > Ard:
> > Do y
On 06/11/18 09:42, Ard Biesheuvel wrote:
> As a security measure, some distros now build their GCC toolchains with
> PIE code generation enabled by default, because it is a prerequisite
> for ASLR to be enabled when running the executable.
>
> This typically results in slightly larger code, but it
On 11 June 2018 at 10:52, Ard Biesheuvel wrote:
> On 11 June 2018 at 10:38, Gao, Liming wrote:
>> Ard:
>> Do you mean the default GCC compiler disables PIC and PIE for IA32 arch?
>> But now, some distribution GCC compiler enables PIC and PIE by default. So,
>> we have to obviously disable PIC
On 11 June 2018 at 10:38, Gao, Liming wrote:
> Ard:
> Do you mean the default GCC compiler disables PIC and PIE for IA32 arch?
> But now, some distribution GCC compiler enables PIC and PIE by default. So,
> we have to obviously disable PIC and PIE in tools_def.txt.
>
Yes. On my x86 Ubuntu 18.
Ard:
Do you mean the default GCC compiler disables PIC and PIE for IA32 arch? But
now, some distribution GCC compiler enables PIC and PIE by default. So, we have
to obviously disable PIC and PIE in tools_def.txt.
Thanks
Liming
>-Original Message-
>From: Ard Biesheuvel [mailto:ard.bies
As a security measure, some distros now build their GCC toolchains with
PIE code generation enabled by default, because it is a prerequisite
for ASLR to be enabled when running the executable.
This typically results in slightly larger code, but it also generates
ELF relocations that our tooling ca
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