On Mer, 2005-11-23 at 12:17 -0700, Andi Kleen wrote: > > + /* Paranoia */ > > + asm volatile ("jmp 1f\n1:"); > > + mb(); > > That would be totally obsolete 386 era paranoia. If anything then use > a CLFLUSH (but not available on all x86s) If you are patching code another x86 CPU is running you must halt the other processors and ensure it executes a serialzing instruction before it enters any patched code. How many kilobytes of tables do you add to the kernel to do this pointless stunt btw ? Alan "CPU errata are fun" Cox - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Follow-Ups:
- Re: [patch] SMP alternatives
- From: Gerd Knorr <[email protected]>
- Re: [patch] SMP alternatives
- From: Andi Kleen <[email protected]>
- Re: [patch] SMP alternatives
- References:
- [PATCH 1/10] Cr4 is valid on some 486s
- From: Zachary Amsden <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Pavel Machek <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Zachary Amsden <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Linus Torvalds <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Zachary Amsden <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Linus Torvalds <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Dave Jones <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Linus Torvalds <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Linus Torvalds <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Gerd Knorr <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Linus Torvalds <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Gerd Knorr <[email protected]>
- Re: [PATCH 1/10] Cr4 is valid on some 486s
- From: Gerd Knorr <[email protected]>
- [RFC] SMP alternatives
- From: Gerd Knorr <[email protected]>
- [patch] SMP alternatives
- From: Gerd Knorr <[email protected]>
- Re: [patch] SMP alternatives
- From: Andi Kleen <[email protected]>
- [PATCH 1/10] Cr4 is valid on some 486s
- Prev by Date: Re: Use enum to declare errno values
- Next by Date: RE: Scratch install of Red Hat Linux 7.3 on a Dell Poweredge 1850
- Previous by thread: Re: [patch] SMP alternatives
- Next by thread: Re: [patch] SMP alternatives
- Index(es):