linux-kernel - Re: [PATCH v6 07/10] PCI/RCEC: Add RCiEP's linked RCEC to AER/ERR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200928014711.GA2475864@bjorn-Precision-5520>
Date:   Sun, 27 Sep 2020 20:47:11 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Sean V Kelley <seanvk.dev@...gontracks.org>
Cc:     bhelgaas@...gle.com, Jonathan.Cameron@...wei.com,
        rafael.j.wysocki@...el.com, ashok.raj@...el.com,
        tony.luck@...el.com, sathyanarayanan.kuppuswamy@...el.com,
        qiuxu.zhuo@...el.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sean V Kelley <sean.v.kelley@...el.com>
Subject: Re: [PATCH v6 07/10] PCI/RCEC: Add RCiEP's linked RCEC to AER/ERR

On Sun, Sep 27, 2020 at 06:45:45PM -0500, Bjorn Helgaas wrote:
> On Tue, Sep 22, 2020 at 02:38:56PM -0700, Sean V Kelley wrote:
> > From: Qiuxu Zhuo <qiuxu.zhuo@...el.com>

> >  	pci_dbg(dev, "broadcast error_detected message\n");
> >  	if (state == pci_channel_io_frozen) {
> > -		pci_bridge_walk(bridge, report_frozen_detected, &status);
> > +		pci_bridge_walk(bridge, dev, report_frozen_detected, &status);
> >  		if (type == PCI_EXP_TYPE_RC_END) {
> > +			/*
> > +			 * The callback only clears the Root Error Status
> > +			 * of the RCEC (see aer.c).
> > +			 */
> > +			if (bridge)
> > +				reset_subordinate_devices(bridge);
> 
> It's unfortunate to add yet another special case in this code, and I'm
> not thrilled about the one in aer_root_reset() either.  It's just not
> obvious why they should be there.  I'm sure if I spent 30 minutes
> decoding things, it would all make sense.  Guess I'm just griping
> because I don't have a better suggestion.

I'm sorry, this was unkind of me.  If I don't have a constructive
idea, there's no reason for me to complain about this.  I apologize.

Bjorn