[PATCH v2] x86/apic: Drop useless CXL/CPX row from the TSC deadline errata table

[Andrew Cooper <andrew.cooper3@citrix.com>]

This erratum is fixed in later steppings.

Instead of including the fixed steppings in the table in a way that will
unconditionally cause apic_validate_deadline_timer() to decide "not
vulnerable", simply omit the row.

No functional change.

Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Ingo Molnar <mingo@redhat.com>
CC: Borislav Petkov <bp@alien8.de>
CC: Dave Hansen <dave.hansen@linux.intel.com>
CC: x86@kernel.org
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Sohil Mehta <sohil.mehta@intel.com>
CC: Yuntao Wang <yuntao.wang@linux.dev>
CC: Zhang Rui <rui.zhang@intel.com>
CC: linux-kernel@vger.kernel.org

v2:
 * Adjust the commit message.

Strictly speaking, this is:

  Fixes: 66abf2388331 ("x86/apic: Convert the TSC deadline timer matching to steppings macro")

but I really don't think it's interesting to backport.
---
 arch/x86/kernel/apic/apic.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index d93f87f29d03..829c8efce1c1 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -524,7 +524,6 @@ static const struct x86_cpu_id deadline_match[] __initconst = {
 
 	X86_MATCH_VFM_STEPS(INTEL_SKYLAKE_X,   0x3, 0x3, 0x01000136),
 	X86_MATCH_VFM_STEPS(INTEL_SKYLAKE_X,   0x4, 0x4, 0x02000014),
-	X86_MATCH_VFM_STEPS(INTEL_SKYLAKE_X,   0x5, 0xf, 0),
 
 	X86_MATCH_VFM(INTEL_HASWELL,		0x22),
 	X86_MATCH_VFM(INTEL_HASWELL_L,		0x20),

base-commit: 7f98ab9da046865d57c102fd3ca9669a29845f67
-- 
2.39.5