From: bugzilla-daemon@kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 219787] Guest's applications crash with EXCEPTION_SINGLE_STEP (0x80000004)
Date: Mon, 24 Feb 2025 11:36:03 +0000 [thread overview]
Message-ID: <bug-219787-28872-kTq8MgTJ0N@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-219787-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=219787
--- Comment #18 from Ravi Bangoria (ravi.bangoria@amd.com) ---
(In reply to Ravi Bangoria from comment #16)
> It seems, the CPU is preserving SW written DR6[BusLockDetected] while
> generating the #DB when the CPL is 0 and DEBUGCTL[BusLockTrapEn] is set.
My bad, the behavior is same for CPL 3 as well. Apparently, it's a correct
behavior as documented in the AMD Architecture Programmer's Manual. I've posted
a KUT patch to KVM mailing list. (More details in the patch). Please review.
https://lore.kernel.org/r/20250224112601.6504-1-ravi.bangoria@amd.com
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next prev parent reply other threads:[~2025-02-24 11:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-16 9:53 [Bug 219787] New: Guest's applications crash with EXCEPTION_SINGLE_STEP (0x80000004) bugzilla-daemon
2025-02-16 9:54 ` [Bug 219787] " bugzilla-daemon
2025-02-16 10:01 ` bugzilla-daemon
2025-02-20 0:31 ` bugzilla-daemon
2025-02-20 2:57 ` bugzilla-daemon
2025-02-20 17:40 ` Sean Christopherson
2025-02-20 7:10 ` bugzilla-daemon
2025-02-20 17:43 ` Sean Christopherson
2025-02-20 17:41 ` bugzilla-daemon
2025-02-20 17:43 ` bugzilla-daemon
2025-02-20 17:46 ` bugzilla-daemon
2025-02-20 19:00 ` bugzilla-daemon
2025-02-21 1:31 ` bugzilla-daemon
2025-02-21 1:31 ` bugzilla-daemon
2025-02-21 1:32 ` bugzilla-daemon
2025-02-21 10:48 ` bugzilla-daemon
2025-02-21 18:22 ` bugzilla-daemon
2025-02-21 18:22 ` bugzilla-daemon
2025-02-21 20:04 ` bugzilla-daemon
2025-02-23 4:57 ` bugzilla-daemon
2025-02-24 11:33 ` bugzilla-daemon
2025-02-24 11:36 ` bugzilla-daemon [this message]
2025-06-27 13:19 ` bugzilla-daemon
2025-06-30 12:00 ` bugzilla-daemon
2025-07-02 9:05 ` bugzilla-daemon
2025-07-06 7:00 ` bugzilla-daemon
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