Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

On Tue, 1 Oct 2024 11:35:53 +0200 Ard Biesheuvel wrote: > All I am asking for is a line in the documentation that says that > clobbered trace buffers could occur at any time, regardless of whether > CONFIG_RESET_ATTACK_MITIGATION is enabled or not. That way, we have > something to refer to when p

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

Hi Hans, On Tue, 1 Oct 2024 at 10:57, Hans de Goede wrote: > > Hi, > > On 1-Oct-24 8:17 AM, Ard Biesheuvel wrote: > > On Thu, 26 Sept 2024 at 19:02, Steven Rostedt wrote: > >> > >> From: Steven Rostedt > >> > >> At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede > >> about

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

Hi, On 1-Oct-24 8:17 AM, Ard Biesheuvel wrote: > On Thu, 26 Sept 2024 at 19:02, Steven Rostedt wrote: >> >> From: Steven Rostedt >> >> At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede >> about the persistent buffer to display traces from previous boots. He >> mentioned tha

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

On Tue, 1 Oct 2024 at 14:52, Steven Rostedt wrote: > > On Tue, 1 Oct 2024 11:35:53 +0200 > Ard Biesheuvel wrote: > > > All I am asking for is a line in the documentation that says that > > clobbered trace buffers could occur at any time, regardless of whether > > CONFIG_RESET_ATTACK_MITIGATION is

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

On Thu, 26 Sept 2024 at 19:02, Steven Rostedt wrote: > > From: Steven Rostedt > > At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede > about the persistent buffer to display traces from previous boots. He > mentioned that UEFI can clear memory. In my own tests I have not seen

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

On Mon, 30 Sep 2024 11:20:48 -0600 Jonathan Corbet wrote: > > And I forgot to send this to the Documentation maintainers :-p > > > > Jon, could you take this? Do you need me to resend, or can you just pull it > > from lore? > > I'll grab it in a bit. No rush. Thanks! -- Steve

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

Steven Rostedt writes: > On Thu, 26 Sep 2024 19:54:48 +0200 > Hans de Goede wrote: > >> Hi, >> >> On 26-Sep-24 7:01 PM, Steven Rostedt wrote: >> > From: Steven Rostedt >> > >> > At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede >> > about the persistent buffer to display

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

On Thu, 26 Sep 2024 19:54:48 +0200 Hans de Goede wrote: > Hi, > > On 26-Sep-24 7:01 PM, Steven Rostedt wrote: > > From: Steven Rostedt > > > > At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede > > about the persistent buffer to display traces from previous boots. He > > m

Re: [PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

Hi, On 26-Sep-24 7:01 PM, Steven Rostedt wrote: > From: Steven Rostedt > > At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede > about the persistent buffer to display traces from previous boots. He > mentioned that UEFI can clear memory. In my own tests I have not seen > thi

[PATCH] Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory

From: Steven Rostedt At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede about the persistent buffer to display traces from previous boots. He mentioned that UEFI can clear memory. In my own tests I have not seen this. He later informed me that it requires the config option: