Messages in this thread | | | Date | Mon, 16 Oct 2017 23:25:45 +0200 | From | Borislav Petkov <> | Subject | Re: [Part1 PATCH v6.1 14/17] x86: Add support for changing memory encryption attribute in early boot |
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On Mon, Oct 16, 2017 at 02:56:08PM -0500, Brijesh Singh wrote: > Some KVM-specific custom MSRs share the guest physical address with the > hypervisor in early boot. When SEV is active, the shared physical address > must be mapped with memory encryption attribute cleared so that both > hypervisor and guest can access the data. > > Add APIs to change the memory encryption attribute in early boot code. > > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: "H. Peter Anvin" <hpa@zytor.com> > Cc: Borislav Petkov <bp@suse.de> > Cc: x86@kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: Tom Lendacky <thomas.lendacky@amd.com> > Improvements-by: Borislav Petkov <bp@suse.de> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> > --- > > Changes since v6: > * applied the improvements from Boris > > arch/x86/include/asm/mem_encrypt.h | 8 +++ > arch/x86/mm/mem_encrypt.c | 131 +++++++++++++++++++++++++++++++++++++ > 2 files changed, 139 insertions(+)
Reviewed-by: Borislav Petkov <bp@suse.de>
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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