linux-kernel - Re: [PATCH v2 0/2] x86/traps: Fix DR6/DR7 initialization

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Message-ID: <20250617090528.GP1613376@noisy.programming.kicks-ass.net>
Date: Tue, 17 Jun 2025 11:05:28 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: "Xin Li (Intel)" <xin@...or.com>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org, tglx@...utronix.de,
	mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
	x86@...nel.org, hpa@...or.com, seanjc@...gle.com,
	pbonzini@...hat.com, sohil.mehta@...el.com, brgerst@...il.com,
	tony.luck@...el.com, fenghuay@...dia.com
Subject: Re: [PATCH v2 0/2] x86/traps: Fix DR6/DR7 initialization

On Tue, Jun 17, 2025 at 12:32:32AM -0700, Xin Li (Intel) wrote:
> Xin Li (Intel) (2):
>   x86/traps: Initialize DR6 by writing its architectural reset value
>   x86/traps: Initialize DR7 by writing its architectural reset value
> 
>  arch/x86/include/asm/debugreg.h      | 14 ++++++++----
>  arch/x86/include/asm/kvm_host.h      |  2 +-
>  arch/x86/include/uapi/asm/debugreg.h |  7 +++++-
>  arch/x86/kernel/cpu/common.c         | 17 ++++++--------
>  arch/x86/kernel/kgdb.c               |  2 +-
>  arch/x86/kernel/process_32.c         |  2 +-
>  arch/x86/kernel/process_64.c         |  2 +-
>  arch/x86/kernel/traps.c              | 34 +++++++++++++++++-----------
>  arch/x86/kvm/x86.c                   |  4 ++--
>  9 files changed, 50 insertions(+), 34 deletions(-)

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>