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Commit 9f88c3b0 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Greg Kroah-Hartman
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x86/common: Stamp out the stepping madness 



commit 7a05bc95ed1c5a59e47aaade9fb4083c27de9e62 upstream.

The whole MMIO/RETBLEED enumeration went overboard on steppings. Get
rid of all that and simply use ANY.

If a future stepping of these models would not be affected, it had
better set the relevant ARCH_CAP_$FOO_NO bit in
IA32_ARCH_CAPABILITIES.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Acked-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Signed-off-by: default avatarThadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: default avatarSuleiman Souhlal <suleiman@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f744b88d

arch/x86/kernel/cpu/common.c

+16 −22
Original line number Diff line number Diff line
@@ -1043,32 +1043,26 @@ static const struct x86_cpu_id cpu_vuln_blacklist[] __initconst = { 
	VULNBL_INTEL_STEPPINGS(HASWELL_CORE,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(HASWELL_ULT,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(HASWELL_GT3E,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(HASWELL_X,	BIT(2) | BIT(4),		MMIO),

	VULNBL_INTEL_STEPPINGS(BROADWELL_XEON_D,X86_STEPPINGS(0x3, 0x5),	MMIO),

	VULNBL_INTEL_STEPPINGS(HASWELL_X,	X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(BROADWELL_XEON_D,X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(BROADWELL_GT3E,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(BROADWELL_X,	X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(BROADWELL_CORE,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_MOBILE,	X86_STEPPINGS(0x3, 0x3),	SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_MOBILE,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_X,	BIT(3) | BIT(4) | BIT(6) |

						BIT(7) | BIT(0xB),              MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_DESKTOP,	X86_STEPPINGS(0x3, 0x3),	SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_DESKTOP,	X86_STEPPING_ANY,		SRBDS),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_MOBILE,	X86_STEPPINGS(0x9, 0xC),	SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_MOBILE,	X86_STEPPINGS(0x0, 0x8),	SRBDS),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_DESKTOP,X86_STEPPINGS(0x9, 0xD),	SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_DESKTOP,X86_STEPPINGS(0x0, 0x8),	SRBDS),

	VULNBL_INTEL_STEPPINGS(ICELAKE_MOBILE,	X86_STEPPINGS(0x5, 0x5),	MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ICELAKE_XEON_D,	X86_STEPPINGS(0x1, 0x1),	MMIO),

	VULNBL_INTEL_STEPPINGS(ICELAKE_X,	X86_STEPPINGS(0x4, 0x6),	MMIO),

	VULNBL_INTEL_STEPPINGS(COMETLAKE,	BIT(2) | BIT(3) | BIT(5),	MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(COMETLAKE_L,	X86_STEPPINGS(0x1, 0x1),	MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(COMETLAKE_L,	X86_STEPPINGS(0x0, 0x0),	MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(LAKEFIELD,	X86_STEPPINGS(0x1, 0x1),	MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ROCKETLAKE,	X86_STEPPINGS(0x1, 0x1),	MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ATOM_TREMONT,	X86_STEPPINGS(0x1, 0x1),	MMIO | MMIO_SBDS),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_MOBILE,	X86_STEPPING_ANY,		SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_X,	X86_STEPPING_ANY,		MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(SKYLAKE_DESKTOP,	X86_STEPPING_ANY,		SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_MOBILE,	X86_STEPPING_ANY,		SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(KABYLAKE_DESKTOP,X86_STEPPING_ANY,		SRBDS | MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ICELAKE_MOBILE,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ICELAKE_XEON_D,	X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(ICELAKE_X,	X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(COMETLAKE,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(COMETLAKE_L,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(LAKEFIELD,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ROCKETLAKE,	X86_STEPPING_ANY,		MMIO | RETBLEED),

	VULNBL_INTEL_STEPPINGS(ATOM_TREMONT,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS),

	VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_X,	X86_STEPPING_ANY,		MMIO),

	VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_L,	X86_STEPPINGS(0x0, 0x0),	MMIO | MMIO_SBDS),

	VULNBL_INTEL_STEPPINGS(ATOM_TREMONT_L,	X86_STEPPING_ANY,		MMIO | MMIO_SBDS),



	VULNBL_AMD(0x15, RETBLEED),

	VULNBL_AMD(0x16, RETBLEED),