linux-kernel - Re: [PATCH PATCH 8/9] x86/bugs: Declutter vulnerable CPU list

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Date: Mon, 17 Jun 2024 10:38:32 +0100
From: Andrew Cooper <andrew.cooper3@...rix.com>
To: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org
Cc: daniel.sneddon@...ux.intel.com, tony.luck@...el.com,
 linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
 linux-perf-users@...r.kernel.org, Josh Poimboeuf <jpoimboe@...nel.org>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
 "Liang, Kan" <kan.liang@...ux.intel.com>
Subject: Re: [PATCH PATCH 8/9] x86/bugs: Declutter vulnerable CPU list

On 17/06/2024 10:12 am, Pawan Gupta wrote:
> diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
> index d4e539d4e158..7e3b09b0f82c 100644
> --- a/arch/x86/kernel/cpu/common.c
> +++ b/arch/x86/kernel/cpu/common.c
> @@ -1229,43 +1232,45 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = {
>  #define RFDS		BIT(7)
>  
>  static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = {
> -	VULNBL_INTEL_STEPPINGS(INTEL_IVYBRIDGE,		X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_HASWELL,		X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_HASWELL_L,		X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_HASWELL_G,		X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_HASWELL_X,		X86_STEPPING_ANY,		MMIO),
> -	VULNBL_INTEL_STEPPINGS(INTEL_BROADWELL_D,	X86_STEPPING_ANY,		MMIO),
> -	VULNBL_INTEL_STEPPINGS(INTEL_BROADWELL_G,	X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_BROADWELL_X,	X86_STEPPING_ANY,		MMIO),
> -	VULNBL_INTEL_STEPPINGS(INTEL_BROADWELL,		X86_STEPPING_ANY,		SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_SKYLAKE_X,		X86_STEPPING_ANY,		MMIO | RETBLEED | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_SKYLAKE_L,		X86_STEPPING_ANY,		MMIO | RETBLEED | GDS | SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_SKYLAKE,		X86_STEPPING_ANY,		MMIO | RETBLEED | GDS | SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_KABYLAKE_L,	X86_STEPPING_ANY,		MMIO | RETBLEED | GDS | SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_KABYLAKE,		X86_STEPPING_ANY,		MMIO | RETBLEED | GDS | SRBDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_CANNONLAKE_L,	X86_STEPPING_ANY,		RETBLEED),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ICELAKE_L,		X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ICELAKE_D,		X86_STEPPING_ANY,		MMIO | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ICELAKE_X,		X86_STEPPING_ANY,		MMIO | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_COMETLAKE,		X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_COMETLAKE_L,	X86_STEPPINGS(0x0, 0x0),	MMIO | RETBLEED),
> -	VULNBL_INTEL_STEPPINGS(INTEL_COMETLAKE_L,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_TIGERLAKE_L,	X86_STEPPING_ANY,		GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_TIGERLAKE,		X86_STEPPING_ANY,		GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_LAKEFIELD,		X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ROCKETLAKE,	X86_STEPPING_ANY,		MMIO | RETBLEED | GDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ALDERLAKE,		X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ALDERLAKE_L,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_RAPTORLAKE,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_RAPTORLAKE_P,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_RAPTORLAKE_S,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_GRACEMONT,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_TREMONT,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_TREMONT_D,	X86_STEPPING_ANY,		MMIO | RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_TREMONT_L,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_GOLDMONT,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_GOLDMONT_D,	X86_STEPPING_ANY,		RFDS),
> -	VULNBL_INTEL_STEPPINGS(INTEL_ATOM_GOLDMONT_PLUS, X86_STEPPING_ANY,		RFDS),
> +	VULNBL_INTEL(IVYBRIDGE,		SRBDS),
> +	VULNBL_INTEL(HASWELL,		SRBDS),
> +	VULNBL_INTEL(HASWELL_L,		SRBDS),
> +	VULNBL_INTEL(HASWELL_G,		SRBDS),
> +	VULNBL_INTEL(HASWELL_X,		MMIO),
> +	VULNBL_INTEL(BROADWELL_D,	MMIO),
> +	VULNBL_INTEL(BROADWELL_G,	SRBDS),
> +	VULNBL_INTEL(BROADWELL_X,	MMIO),
> +	VULNBL_INTEL(BROADWELL,		SRBDS),
> +	VULNBL_INTEL(SKYLAKE_X,		MMIO | RETBLEED | GDS),
> +	VULNBL_INTEL(SKYLAKE_L,		MMIO | RETBLEED | GDS | SRBDS),
> +	VULNBL_INTEL(SKYLAKE,		MMIO | RETBLEED | GDS | SRBDS),
> +	VULNBL_INTEL(KABYLAKE_L,	MMIO | RETBLEED | GDS | SRBDS),
> +	VULNBL_INTEL(KABYLAKE,		MMIO | RETBLEED | GDS | SRBDS),
> +	VULNBL_INTEL(CANNONLAKE_L,	RETBLEED),
> +	VULNBL_INTEL(ICELAKE_L,		MMIO | MMIO_SBDS | RETBLEED | GDS),
> +	VULNBL_INTEL(ICELAKE_D,		MMIO | GDS),
> +	VULNBL_INTEL(ICELAKE_X,		MMIO | GDS),
> +	VULNBL_INTEL(COMETLAKE,		MMIO | MMIO_SBDS | RETBLEED | GDS),
> +	VULNBL_INTEL(TIGERLAKE_L,	GDS),
> +	VULNBL_INTEL(TIGERLAKE,		GDS),
> +	VULNBL_INTEL(LAKEFIELD,		MMIO | MMIO_SBDS | RETBLEED),
> +	VULNBL_INTEL(ROCKETLAKE,	MMIO | RETBLEED | GDS),
> +	VULNBL_INTEL(ALDERLAKE,		RFDS),
> +	VULNBL_INTEL(ALDERLAKE_L,	RFDS),
> +	VULNBL_INTEL(RAPTORLAKE,	RFDS),
> +	VULNBL_INTEL(RAPTORLAKE_P,	RFDS),
> +	VULNBL_INTEL(RAPTORLAKE_S,	RFDS),
> +	VULNBL_INTEL(ATOM_GRACEMONT,	RFDS),
> +	VULNBL_INTEL(ATOM_TREMONT,	MMIO | MMIO_SBDS | RFDS),
> +	VULNBL_INTEL(ATOM_TREMONT_D,	MMIO | RFDS),
> +	VULNBL_INTEL(ATOM_TREMONT_L,	MMIO | MMIO_SBDS | RFDS),
> +	VULNBL_INTEL(ATOM_GOLDMONT,	RFDS),
> +	VULNBL_INTEL(ATOM_GOLDMONT_D,	RFDS),
> +	VULNBL_INTEL(ATOM_GOLDMONT_PLUS, RFDS),

Take the opportunity to realign and fix this ?

~Andrew