Messages in this thread |  | | Date | Thu, 28 Sep 2017 18:23:12 +0200 | From | Borislav Petkov <> | Subject | Re: [Part1 PATCH v5 10/17] x86/mm, resource: Use PAGE_KERNEL protection for ioremap of memory pages |
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On Wed, Sep 27, 2017 at 10:13:22AM -0500, Brijesh Singh wrote: > From: Tom Lendacky <thomas.lendacky@amd.com> > > In order for memory pages to be properly mapped when SEV is active, we > need to use the PAGE_KERNEL protection attribute as the base protection. > This will insure that memory mapping of, e.g. ACPI tables, receives the > proper mapping attributes. > > 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: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> > Cc: Laura Abbott <labbott@redhat.com> > Cc: Andy Lutomirski <luto@kernel.org> > Cc: "Jérôme Glisse" <jglisse@redhat.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Dan Williams <dan.j.williams@intel.com> > Cc: Kees Cook <keescook@chromium.org> > Cc: x86@kernel.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> > --- > arch/x86/mm/ioremap.c | 79 ++++++++++++++++++++++++++++++++++++++++++-------- > include/linux/ioport.h | 3 ++ > kernel/resource.c | 19 ++++++++++++ > 3 files changed, 89 insertions(+), 12 deletions(-)
Reviewed-by: Borislav Petkov <bp@suse.de>
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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