linux-kernel - RE: [PATCH v5 04/34] x86/traps: add external_interrupt() to dispatch external interrupts

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: <SA1PR11MB6734EE8426F9E496CD417D72A8809@SA1PR11MB6734.namprd11.prod.outlook.com>
Date:   Mon, 20 Mar 2023 17:53:56 +0000
From:   "Li, Xin3" <xin3.li@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "andrew.cooper3@...rix.com" <andrew.cooper3@...rix.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>
Subject: RE: [PATCH v5 04/34] x86/traps: add external_interrupt() to dispatch
 external interrupts

> > +	if (sysvec < NR_SYSTEM_VECTORS) {
> > +		if (system_interrupt_handlers[sysvec])
> > +			system_interrupt_handlers[sysvec](regs);
> > +		else
> > +			dispatch_spurious_interrupt(regs, vector);
> 
> ISTR suggesting you can get rid of this branch if you stuff
> system_interrupt_handlers[] with dispatch_spurious_interrupt instead of NULL.

You're right, however I only fixed one.