On Tue, Jan 16, 2018 at 8:36 AM, Joerg Roedel <joro@xxxxxxxxxx> wrote: > From: Joerg Roedel <jroedel@xxxxxxx> > > Hi, > > here is my current WIP code to enable PTI on x86-32. It is > still in a pretty early state, but it successfully boots my > KVM guest with PAE and with legacy paging. The existing PTI > code for x86-64 already prepares a lot of the stuff needed > for 32 bit too, thanks for that to all the people involved > in its development :) > > The patches are split as follows: > > - 1-3 contain the entry-code changes to enter and > exit the kernel via the sysenter trampoline stack. > > - 4-7 are fixes to get the code compile on 32 bit > with CONFIG_PAGE_TABLE_ISOLATION=y. > > - 8-14 adapt the existing PTI code to work properly > on 32 bit and add the needed parts to 32 bit > page-table code. > > - 15 switches PTI on by adding the CR3 switches to > kernel entry/exit. > > - 16 enables the Kconfig for all of X86 > > The code has not run on bare-metal yet, I'll test that in > the next days once I setup a 32 bit box again. I also havn't > tested Wine and DosEMU yet, so this might also be broken. > If you pass all the x86 selftests, then Wine and DOSEMU are pretty likely to work :) --Andy -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
