On 3 November 2017 at 16:31, Tom Lendacky <thomas.lendacky@xxxxxxx> wrote: > On 11/3/2017 10:12 AM, Tomeu Vizoso wrote: >> >> On 17 July 2017 at 23:10, Tom Lendacky <thomas.lendacky@xxxxxxx> wrote: >>> >>> The SMP MP-table is built by UEFI and placed in memory in a decrypted >>> state. These tables are accessed using a mix of early_memremap(), >>> early_memunmap(), phys_to_virt() and virt_to_phys(). Change all accesses >>> to use early_memremap()/early_memunmap(). This allows for proper setting >>> of the encryption mask so that the data can be successfully accessed when >>> SME is active. >>> >>> Reviewed-by: Borislav Petkov <bp@xxxxxxx> >>> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx> >>> --- >>> arch/x86/kernel/mpparse.c | 98 >>> +++++++++++++++++++++++++++++++++-------------- >>> 1 file changed, 70 insertions(+), 28 deletions(-) >> >> >> Hi there, >> >> today I played a bit with crosvm [0] and noticed that 4.14-rc7 doesn't >> boot. git-bisect pointed to this patch, and reverting it indeed gets >> things working again. >> >> Anybody has an idea of why this could be? > > > If you send me your kernel config I'll see if I can reproduce the issue > and debug it. x86_64_defconfig should be enough. I have pasted my dev env instructions here in case they help: http://blog.tomeuvizoso.net/2017/11/experiments-with-crosvm_6.html Thanks, Tomeu
