On Fri, 24 Feb 2006, Eric W. Biederman wrote: > > > To my handwaving ears end of the address space sounds very good though. Is there > > currently any pressure on VMALLOC_RESERVE (128M)? Teaching the linker appears to > > be a matter of changing __KERNEL_START. That leaves actually mapping ourselves > > there, and... more invasiveness? > > __pa stops working on kernel addresses. That's not the issue. The real issue is the _physical_ address. Nothing else matters. If the TLB splitting on the fixed MTRRs is an issue, it depends entirely on what physical address the kernel resides in, and the virtual address is totally inconsequential. So playing games with virtual mapping has absolutely no upsides, and it definitely has downsides. Linus - 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 to reorder functions in the vmlinux to a defined order
- From: Rene Herman <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- References:
- Patch to make the head.S-must-be-first-in-vmlinux order explicit
- From: Arjan van de Ven <[email protected]>
- Patch to reorder functions in the vmlinux to a defined order
- From: Arjan van de Ven <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Andi Kleen <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Arjan van de Ven <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Linus Torvalds <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Rene Herman <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Linus Torvalds <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Rene Herman <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Linus Torvalds <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Rene Herman <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: [email protected] (Eric W. Biederman)
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: Rene Herman <[email protected]>
- Re: Patch to reorder functions in the vmlinux to a defined order
- From: [email protected] (Eric W. Biederman)
- Patch to make the head.S-must-be-first-in-vmlinux order explicit
- Prev by Date: [PATCH] dm free minor after unlink gendisk
- Next by Date: Re: [git patches] net driver fixes
- Previous by thread: Re: Patch to reorder functions in the vmlinux to a defined order
- Next by thread: Re: Patch to reorder functions in the vmlinux to a defined order
- Index(es):
 |