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Fri, 18 Jul 2025 16:48:24 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 288308] bhyve + Windows 2025 freezes with rdmsr to register 0xc0010114 error on AMD Zen4 Date: Fri, 18 Jul 2025 16:48:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 14.3-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: demik+freebsd@lostwave.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D288308 Bug ID: 288308 Summary: bhyve + Windows 2025 freezes with rdmsr to register 0xc0010114 error on AMD Zen4 Product: Base System Version: 14.3-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bhyve Assignee: virtualization@FreeBSD.org Reporter: demik+freebsd@lostwave.net Hello, Trying to boot a Windows 2025 installer on bhyve results in a guest freeze = and the host CPU (core) peaking to 100% CPU: AMD Ryzen 5 8500G w/ Radeon 740M Graphics (3550.18-MHz K8-class = CPU) startup command: # bhyve -AHP -s 0:0,amd_hostbridge \ -s 1:0,lpc -s 2:0,virtio-net,tap1 \ -s 3:0,virtio-blk,/dev/zvol/noise/srv/VOL/w2k25,sectorsize=3D512 \ -s 4:0,ahci-cd,/tmp/Win_Server_STD_CORE_2025_24H2.2_DC_STD_MLF_X23-91028= .ISO \ -s 4:1,ahci-cd,/tmp/virtio-win.iso \ -l bootrom,/tmp/BHYVE_UEFI.fd,/tmp/BHYVE_UEFI_W2K25.fd \ -s 29,fbuf,tcp=3D:5925,wait -K fr \=20 -c 1 -m 4096 w2k25 > pkg info edk2-bhyve edk2-bhyve-g202308_5 Name : edk2-bhyve Version : g202308_5 OS goes through the bootloader, and freezes when the spinning thing usually appears Changing sectorzize and memory values doesn't help. However, Windows 2022 installer works fine, even with the rdmsr to register error. Running bhyve with -w also allow Windows 2025 to boot. Random guess: Windows 2025 checks something on register 0xc0010114, and sin= ce it isn't implemented, it fails on a few AMD hosts. I might be totally wrong tho. --=20 You are receiving this mail because: You are the assignee for the bug.=