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: Sun, 15 Aug 2010 22:08:43 -0700 From: "H. Peter Anvin" <hpa@...or.com> To: huang ying <huang.ying.caritas@...il.com> CC: Takao Indoh <indou.takao@...fujitsu.com>, linux-kernel@...r.kernel.org, kexec@...ts.infradead.org, ebiederm@...ssion.com, tglx@...utronix.de, mingo@...hat.com, vgoyal@...hat.com, nhorman@...driver.com Subject: Re: [PATCH][EFI] Run EFI in physical mode For the 1:1 map we probably should make all pages executable; other things need it too, but we shouldn't have it mapped in except when needed. "huang ying" <huang.ying.caritas@...il.com> wrote: >On Mon, Aug 16, 2010 at 11:27 AM, H. Peter Anvin <hpa@...or.com> wrote: >> No, it should not be dynamic; rather we should unify all the users who need a 1:1 map and just keep that page table set around. > >Agree. One known issue of global 1:1 map is that we need to make at >least part of page table PAGE_KERNEL_EXEC for EFI runtime code, and >change_page_attr can not be used before page allocator is available. > >Best Regards, >Huang Ying -- Sent from my mobile phone. Please pardon any lack of formatting. -- 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