From: Sohil Mehta <sohil.mehta@intel.com>
To: "Nikunj A. Dadhania" <nikunj@amd.com>,
Dave Hansen <dave.hansen@intel.com>, <bp@alien8.de>
Cc: <tglx@kernel.org>, <mingo@redhat.com>, <kvm@vger.kernel.org>,
<dave.hansen@linux.intel.com>, <hpa@zytor.com>, <xin@zytor.com>,
<seanjc@google.com>, <pbonzini@redhat.com>, <x86@kernel.org>,
<jon.grimm@amd.com>, <stable@vger.kernel.org>,
Tom Lendacky <thomas.lendacky@amd.com>,
<linux-kernel@vger.kernel.org>, <andrew.cooper3@citrix.com>
Subject: Re: [PATCH] x86/fred: Fix early boot failures on SEV-ES/SNP guests
Date: Thu, 19 Feb 2026 11:27:07 -0800 [thread overview]
Message-ID: <f7595e7a-e956-426f-81cc-63d742330532@intel.com> (raw)
In-Reply-To: <317f7def-9ac7-41e1-8754-808cd08f88cb@amd.com>
On 2/15/2026 9:16 PM, Nikunj A. Dadhania wrote:
> @@ -502,7 +517,7 @@ void cr4_init(void)
>
> if (boot_cpu_has(X86_FEATURE_PCID))
> cr4 |= X86_CR4_PCIDE;
> - if (static_branch_likely(&cr_pinning))
> + if (cr_pinning_enabled())
> cr4 = (cr4 & ~cr4_pinned_mask) | cr4_pinned_bits;
>
Maybe I am missing something, but is there a reason to keep this check
anymore?
AFAIU, cr_pinning_enabled() will always be false during cr4_init().
cr4_init() always happens during early bringup when the cpu is marked
offline.
> __write_cr4(cr4);
next prev parent reply other threads:[~2026-02-19 19:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-05 5:10 [PATCH] x86/fred: Fix early boot failures on SEV-ES/SNP guests Nikunj A Dadhania
2026-02-05 5:55 ` Greg KH
2026-02-05 6:10 ` Nikunj A. Dadhania
2026-02-05 6:20 ` Greg KH
2026-02-05 15:50 ` Sean Christopherson
2026-02-05 15:58 ` Dave Hansen
2026-02-05 16:00 ` Greg KH
2026-02-05 5:56 ` Greg KH
2026-02-05 6:24 ` Nikunj A. Dadhania
2026-02-05 7:11 ` Xin Li
2026-02-05 8:54 ` Nikunj A. Dadhania
2026-02-05 14:34 ` Xin Li
2026-02-05 10:41 ` kernel test robot
2026-02-06 3:31 ` Nikunj A. Dadhania
2026-02-06 9:34 ` Xin Li
2026-02-05 12:24 ` kernel test robot
2026-02-05 12:35 ` kernel test robot
2026-02-05 16:10 ` Dave Hansen
2026-02-05 17:20 ` Dave Hansen
2026-02-05 17:39 ` Tom Lendacky
2026-02-06 12:38 ` Nikunj A. Dadhania
2026-02-16 5:16 ` Nikunj A. Dadhania
2026-02-16 17:10 ` Dave Hansen
2026-02-19 19:27 ` Sohil Mehta [this message]
2026-02-19 20:22 ` Dave Hansen
2026-02-19 20:50 ` Sohil Mehta
2026-02-05 17:39 ` H. Peter Anvin
2026-02-06 12:12 ` Nikunj A. Dadhania
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