linux-kernel - Re: [PATCH 09/11] x86: rework CONFIG_GENERIC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241204170935.GB3356373@thelio-3990X>
Date: Wed, 4 Dec 2024 10:09:35 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org,
	Arnd Bergmann <arnd@...db.de>, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Shevchenko <andy@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	Sean Christopherson <seanjc@...gle.com>,
	Davide Ciminaghi <ciminaghi@...dd.com>,
	Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org
Subject: Re: [PATCH 09/11] x86: rework CONFIG_GENERIC_CPU compiler flags

Hi Arnd,

On Wed, Dec 04, 2024 at 11:30:40AM +0100, Arnd Bergmann wrote:
...
> +++ b/arch/x86/Kconfig.cpu
> +config X86_64_V1
> +config X86_64_V2
> +config X86_64_V3
...
> +++ b/arch/x86/Makefile
> +        cflags-$(CONFIG_MX86_64_V1)	+= -march=x86-64
> +        cflags-$(CONFIG_MX86_64_V2)	+= $(call cc-option,-march=x86-64-v2,-march=x86-64)
> +        cflags-$(CONFIG_MX86_64_V3)	+= $(call cc-option,-march=x86-64-v3,-march=x86-64)
...
> +        rustflags-$(CONFIG_MX86_64_V1)	+= -Ctarget-cpu=x86-64
> +        rustflags-$(CONFIG_MX86_64_V2)	+= -Ctarget-cpu=x86-64-v2
> +        rustflags-$(CONFIG_MX86_64_V3)	+= -Ctarget-cpu=x86-64-v3

There appears to be an extra 'M' when using these CONFIGs in Makefile,
so I don't think this works as is?

Cheers,
Nathan