From: Boris Petkov <bp@alien8.de>
To: Bharata B Rao <bharata@amd.com>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, x86@kernel.org, shuah@kernel.org,
kirill.shutemov@linux.intel.com, tglx@linutronix.de,
dave.hansen@linux.intel.com, will@kernel.org, mingo@redhat.com,
oleg@redhat.com, catalin.marinas@arm.com, ananth.narayan@amd.com
Subject: Re: [RFC PATCH v0 3/6] x86: Enable Upper Address Ignore(UAI) feature
Date: Fri, 11 Mar 2022 12:37:09 +0000 [thread overview]
Message-ID: <808EE3DA-69B1-47E3-825E-6DDCE1331F65@alien8.de> (raw)
In-Reply-To: <20220310111545.10852-4-bharata@amd.com>
>diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
>index f7a132eb794d..12615b1b4af5 100644
>--- a/arch/x86/kernel/setup.c
>+++ b/arch/x86/kernel/setup.c
>@@ -740,6 +740,12 @@ dump_kernel_offset(struct notifier_block *self, unsigned long v, void *p)
> return 0;
> }
>
>+static inline void __init uai_enable(void)
>+{
>+ if (boot_cpu_has(X86_FEATURE_UAI))
cpu_feature_enabled
>+ msr_set_bit(MSR_EFER, _EFER_UAI);
>+}
--
Sent from a small device: formatting sux and brevity is inevitable.
next prev parent reply other threads:[~2022-03-11 12:37 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 11:15 [RFC PATCH v0 0/6] x86/AMD: Userspace address tagging Bharata B Rao
2022-03-10 11:15 ` [RFC PATCH v0 1/6] mm, arm64: Update PR_SET/GET_TAGGED_ADDR_CTRL interface Bharata B Rao
2022-03-10 11:15 ` [RFC PATCH v0 2/6] x86/cpufeatures: Add Upper Address Ignore(UAI) as CPU feature Bharata B Rao
2022-03-10 11:15 ` [RFC PATCH v0 3/6] x86: Enable Upper Address Ignore(UAI) feature Bharata B Rao
2022-03-10 19:46 ` Andrew Cooper
2022-03-10 22:37 ` David Laight
2022-03-10 22:46 ` Dave Hansen
2022-03-11 12:37 ` Boris Petkov [this message]
2022-03-10 11:15 ` [RFC PATCH v0 4/6] x86: Provide an implementation of untagged_addr() Bharata B Rao
2022-03-10 11:15 ` [RFC PATCH v0 5/6] x86: Untag user pointers in access_ok() Bharata B Rao
2022-03-10 11:15 ` [RFC PATCH v0 6/6] x86: Add prctl() options to control tagged user addresses ABI Bharata B Rao
2022-03-10 14:32 ` [RFC PATCH v0 0/6] x86/AMD: Userspace address tagging David Laight
2022-03-10 16:45 ` Dave Hansen
2022-03-10 17:19 ` David Laight
2022-03-11 5:42 ` Bharata B Rao
2022-03-11 8:15 ` David Laight
2022-03-11 9:11 ` Bharata B Rao
2022-03-11 9:36 ` David Laight
2022-03-11 16:51 ` Dave Hansen
2022-03-10 15:16 ` Dave Hansen
2022-03-10 15:22 ` Dave Hansen
2022-03-14 5:00 ` Bharata B Rao
2022-03-14 7:03 ` Dave Hansen
2022-03-21 22:29 ` Andy Lutomirski
2022-03-21 22:59 ` Thomas Gleixner
2022-03-22 5:31 ` David Laight
2022-03-23 7:48 ` Bharata B Rao
2022-04-01 19:25 ` Dave Hansen
2022-04-05 5:58 ` Bharata B Rao
2022-04-01 19:41 ` Andy Lutomirski
2022-04-05 8:14 ` Peter Zijlstra
2022-04-05 8:40 ` Bharata B Rao
2022-04-08 17:41 ` Catalin Marinas
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