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Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: x86: missing FRED #PF event data? Message-ID: References: <20260810090347.GS48970@noisy.programming.kicks-ass.net> <20260810110624.06a86a74@pumpkin> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260810110624.06a86a74@pumpkin> On (26/08/10 11:06), David Laight wrote: [..] > > > Can you reproduce on real hardware? I mean, you were babbling about pKVM > > > (whatever that is), so I'm thinking you're on some dodgy virt thing. > > > > > > Not that I have any actual FRED hardware to test anything on :/ > > > > It's an actual H/W, a laptop (Intel(R) Core(TM) Ultra 7 355 powered), > > I was babbling about pKVM because it seems that the best way to > > reproduce is to launch a VM, yet the crash is happening on the host > > side. > > > > Is the same fault processed correctly from userspace? > If not it might be easier to test. I'll look into it. So far I'm aware of crashes when people run VMs, and somehow it's always that page-crossing csum load. There might be other crashes, but I'm only aware of that one.