There's already issue found. So there must be v2. Please wait for it.
> -----Original Message----- > From: Laszlo Ersek [mailto:[email protected]] > Sent: Wednesday, November 29, 2017 8:39 PM > To: Wang, Jian J <[email protected]> > Cc: [email protected] > Subject: Re: [edk2] [PATCH 0/2] Enable page table write protection > > Hi Jian, > > On 11/29/17 09:46, Jian J Wang wrote: > > Write Protect feature (CR0.WP) is always enabled in driver > UefiCpuPkg/CpuDxe. > > But the memory pages used for page table are not set as read-only in the > driver > > DxeIplPeim, after the paging is setup. This might jeopardize the page table > > integrity if there's buffer overflow occured in other part of system. > > > > This patch series will change this situation by clearing R/W bit in page > > attribute > > of the pages used as page table. > > > > Validation works include booting Windows (10/server 2016) and Linux > (Fedora/Ubuntu) > > on OVMF and Intel real platform. > > > > Jian J Wang (2): > > UefiCpuPkg/CpuDxe: Check CR0.WP before changing page table > > MdeModulePkg/DxeIpl: Mark page table as read-only > > > > MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c | 166 > +++++++++++++++++++++++ > > MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h | 14 ++ > > UefiCpuPkg/CpuDxe/CpuPageTable.c | 65 ++++++++- > > 3 files changed, 241 insertions(+), 4 deletions(-) > > > > thanks for the CC -- I'd like to test this feature. > > Is it OK if I wait 1-2 days first, to see if there is review feedback > that requires a v2? > > Thanks! > Laszlo _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
