From: Peter Zijlstra <peterz@infradead.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Xin Li <xin@zytor.com>, Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org, Juergen Gross <jgross@suse.com>,
Dave Hansen <dave.hansen@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 06/20] x86/msr: Standardize on 'u32' MSR indices in <asm/msr.h>
Date: Thu, 10 Apr 2025 09:48:28 +0200 [thread overview]
Message-ID: <20250410074828.GU9833@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <e3d8db6a-dfb9-49d5-8c7f-b4a1d2faf575@zytor.com>
On Wed, Apr 09, 2025 at 11:14:12PM -0700, H. Peter Anvin wrote:
> No, and as you know, I'd like to get rid of the native_ and xen_ functions
> entirely anyway.
I have vague memories of locations where we *have* to use native_{rd,wr}msr()
because the paravirt indirections cause problems.
I don't clearly recall the reasons, but it could be instrumentation
related. The paravirt muck has tracepoints and other crap included.
next prev parent reply other threads:[~2025-04-10 7:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-09 20:28 [PATCH 00/20] x86 MSR in-kernel API type cleanup and rename Ingo Molnar
2025-04-09 20:28 ` [PATCH 01/20] x86/msr: Standardize on u64 in <asm/msr.h> Ingo Molnar
2025-04-09 20:28 ` [PATCH 02/20] x86/msr: Standardize on u64 in <asm/msr-index.h> Ingo Molnar
2025-04-09 20:28 ` [PATCH 03/20] x86/msr: Use u64 in rdmsrl_amd_safe() and wrmsrl_amd_safe() Ingo Molnar
2025-04-09 20:28 ` [PATCH 04/20] x86/msr: Use u64 in rdmsrl_safe() and paravirt_read_pmc() Ingo Molnar
2025-04-09 20:28 ` [PATCH 05/20] x86/msr: Harmonize the prototype and definition of do_trace_rdpmc() Ingo Molnar
2025-04-09 20:28 ` [PATCH 06/20] x86/msr: Standardize on 'u32' MSR indices in <asm/msr.h> Ingo Molnar
2025-04-09 21:55 ` Xin Li
2025-04-10 1:37 ` H. Peter Anvin
2025-04-10 3:18 ` Xin Li
2025-04-10 3:29 ` H. Peter Anvin
2025-04-10 3:53 ` Xin Li
2025-04-10 6:14 ` H. Peter Anvin
2025-04-10 6:34 ` Xin Li
2025-04-10 6:36 ` H. Peter Anvin
2025-04-10 7:48 ` Peter Zijlstra [this message]
2025-04-10 8:53 ` H. Peter Anvin
2025-04-10 17:45 ` Xin Li
2025-04-10 6:39 ` Ingo Molnar
2025-04-10 6:52 ` Xin Li
2025-04-10 7:00 ` H. Peter Anvin
2025-04-09 20:28 ` [PATCH 07/20] x86/msr: Rename 'rdmsrl()' to 'rdmsrq()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 08/20] x86/msr: Rename 'wrmsrl()' to 'wrmsrq()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 09/20] x86/msr: Rename 'rdmsrl_safe()' to 'rdmsrq_safe()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 10/20] x86/msr: Rename 'wrmsrl_safe()' to 'wrmsrq_safe()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 11/20] x86/msr: Rename 'rdmsrl_safe_on_cpu()' to 'rdmsrq_safe_on_cpu()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 12/20] x86/msr: Rename 'wrmsrl_safe_on_cpu()' to 'wrmsrq_safe_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 13/20] x86/msr: Rename 'rdmsrl_on_cpu()' to 'rdmsrq_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 14/20] x86/msr: Rename 'wrmsrl_on_cpu()' to 'wrmsrq_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 15/20] x86/msr: Rename 'mce_rdmsrl()' to 'mce_rdmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 16/20] x86/msr: Rename 'mce_wrmsrl()' to 'mce_wrmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 17/20] x86/msr: Rename 'rdmsrl_amd_safe()' to 'rdmsrq_amd_safe()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 18/20] x86/msr: Rename 'wrmsrl_amd_safe()' to 'wrmsrq_amd_safe()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 19/20] x86/msr: Rename 'native_wrmsrl()' to 'native_wrmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 20/20] x86/msr: Rename 'wrmsrl_cstar()' to 'wrmsrq_cstar()' Ingo Molnar
2025-04-10 7:31 ` [PATCH 00/20] x86 MSR in-kernel API type cleanup and rename Peter Zijlstra
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