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
| ||
|
Date: Fri, 21 Mar 2008 14:48:02 -0700 (PDT) From: Doug Thompson <norsk5@...oo.com> To: Andrew Morton <akpm@...ux-foundation.org>, dougthompson@...ssion.com Cc: Peter Tyser <ptyser@...-inc.com>, alan@...rguk.ukuu.org.uk, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, Andi Kleen <ak@...e.de> Subject: Re: [PATCH 3/3] EDAC Add e752x parameter for sysbus_parity selection Peter Tyser, can you look into this, as it is your requirement, for a possible better solution with those on the CC list? Thanks Thanks Andrew for the notice. doug t --- Andrew Morton <akpm@...ux-foundation.org> wrote: > On Wed, 19 Mar 2008 14:55:59 -0600 > dougthompson@...ssion.com wrote: > > > +/* Setup system bus parity mask register. > > + * Sysbus parity supported on: > > + * e7320/e7520/e7525 + Xeon > > + * i3100 + Xeon/Celeron > > + * Sysbus parity not supported on: > > + * i3100 + Pentium M/Celeron M/Core Duo/Core2 Duo > > + */ > > +static void e752x_init_sysbus_parity_mask(struct e752x_pvt *pvt) > > +{ > > + char *cpu_id = cpu_data(0).x86_model_id; > > + struct pci_dev *dev = pvt->dev_d0f1; > > + int enable = 1; > > + > > + /* Allow module paramter override, else see if CPU supports parity */ > > + if (sysbus_parity != -1) { > > + enable = sysbus_parity; > > + } else if (cpu_id[0] && > > + ((strstr(cpu_id, "Pentium") && strstr(cpu_id, " M ")) || > > + (strstr(cpu_id, "Celeron") && strstr(cpu_id, " M ")) || > > + (strstr(cpu_id, "Core") && strstr(cpu_id, "Duo")))) { > > + e752x_printk(KERN_INFO, "System Bus Parity not " > > + "supported by CPU, disabling\n"); > > + enable = 0; > > + } > > + > > + if (enable) > > + pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0000); > > + else > > + pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0309); > > +} > > Is that the best way of working out whether the CPU supports system bus > parity? We do have cpu capability infrastructure in x86 core and I'd have > thought it would be better for x86 core to work this out, set the suitable > flag and have clients (ie: EDAC) test that flag? > > W1DUG -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists