Messages in this thread |  | | Subject | Re: [PATCH v3 0/5] x86: SME: BSP/SME microcode update fix | From | Tom Lendacky <> | Date | Wed, 10 Jan 2018 15:26:03 -0600 |
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On 1/10/2018 3:14 PM, Gabriel C wrote: > On 10.01.2018 20:25, Tom Lendacky wrote: > > Hi Tom , > >> This patch series addresses an issue when SME is active and the BSP >> is attempting to check for and load microcode during load_ucode_bsp(). >> Since the initrd has not been decrypted (yet) and the virtual address >> of the initrd treats the memory as encrypted, the CPIO archive parsing >> fails to locate the microcode. >> >> This series moves the encryption of the initrd into the early boot code >> and encrypts it at the same time that the kernel is encrypted. Since >> the initrd is now encrypted, the CPIO archive parsing succeeds in >> properly locating the microcode. >> >> The following patches are included in this fix: >> - Cleanup register saving in arch/x86/mm/mem_encrypt_boot.S >> - Reduce parameters and complexity for creating the SME PGD mappings >> - Centralize the use of the PMD flags used in sme_encrypt_kernel() in >> preparation for using PTE flags also. >> - Prepare sme_encrypt_kernel() to handle PAGE aligned encryption, not >> just 2MB large page aligned encryption. >> - Encrypt the initrd in sme_encrypt_kernel() when the kernel is being >> encrypted. >> >> This patch series is based on tip/master. > > Is something in tip/master the patch serie need ?
That's just how I have to submit the patches. You could try applying them onto whatever tree you like, I don't imagine any conflicts would be too difficult to resolve if you encounter any.
Thanks, Tom
> > I would like to test the serie however tip/master > breaks my box.. On tip/master there is no way to boot > with mem_crypt=on with or without your patches. > > With mem_crypt=off the box at least boots to a point , seems APCI breaks > on tip/master. > > If someone want to take a look , a dmesg of the broken boot can be found > there: > > http://sigsegv.24-7.ro/~crazy/tip-master/dmesg-tip-master.txt > > Regards, > > Gabriel C > >
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