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[149.6.153.186]) by smtp.googlemail.com with ESMTPSA id 71dfb90a1353d-5674c24aed4sm1714659e0c.19.2026.02.12.06.54.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 12 Feb 2026 06:54:08 -0800 (PST) Message-ID: <726849ec-2b54-40a6-8b3a-ed88350c3779@redhat.com> Date: Thu, 12 Feb 2026 15:54:03 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/vmware: Fix hypercall clobbers To: Linus Torvalds , Josh Poimboeuf Cc: Thomas Gleixner , Thorsten Leemhuis , Alexey Makhalov , x86@kernel.org, linux-kernel@vger.kernel.org, Ajay Kaher , bcm-kernel-feedback-list@broadcom.com, Peter Zijlstra , Justin Forbes , Linux kernel regressions list References: <99a9c69a-fc1a-43b7-8d1e-c42d6493b41f@broadcom.com> <73641ce4-9387-48c6-8904-74997f9bb7ac@leemhuis.info> <87jywq18yt.ffs@tglx> <2aoadlgueumiq6hf74baskvk5eomsil7jfsxg4vf4ofaggbecl@7seilp4ou5nl> Content-Language: en-US From: Paolo Bonzini In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2/7/26 00:08, Linus Torvalds wrote: > On Fri, 6 Feb 2026 at 14:38, Linus Torvalds > wrote: >> >> I'm going to change that commit message to make it clear that it's a >> QEMU bug, plain and simple. There's no point in claiming this fixes a >> kernel bug when it's a pure workaround for a bug elsewhere. > > I have created an issue at gitlab: > > https://gitlab.com/qemu-project/qemu/-/issues/3293 > > and hopefully this will get fixed in QEMU at some point. > > Adding Paolo to the participants, since he presumably knows what to do > with qemu, since he touched that qemu file a couple of months ago. Thanks, I have queued the patch; I will send a pull request next week and also submit an update to Fedora earlier than that. Sorry about the delay, I was a bit busy with something called the "merge window"... you might have heard of it. :) Paolo > (The fix looks trivial, as suggested by Alexey: just change the > "uint32_t data[6];" to use target_ulong instead of uint32_t, but > somebody needs to test it and maybe qemu has other rules for register > types) > > Linus >