Messages in this thread | | | Date | Tue, 13 Jun 2017 08:49:26 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86/mm: Split read_cr3() into read_cr3_pa() and __read_cr3() |
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* Andy Lutomirski <luto@kernel.org> wrote:
> The kernel has several code paths that read CR3. Most of them assume that > CR3 contains the PGD's physical address, whereas some of them awkwardly > use PHYSICAL_PAGE_MASK to mask off low bits. > > Add explicit mask macros for CR3 and convert all of the CR3 readers. > This will keep them from breaking when PCID is enabled. > > Cc: Tom Lendacky <thomas.lendacky@amd.com> > Cc: Juergen Gross <jgross@suse.com> > Cc: xen-devel <xen-devel@lists.xen.org> > Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> > Signed-off-by: Andy Lutomirski <luto@kernel.org> > --- > > Hi Ingo- > > I broke this out because Tom's SME series and my PCID series both need it. > Please consider applying it to tip:x86/mm. > > I'll send PCID v2 soon. It'll apply to x86/mm + sched/urgent + this patch.
Ok, thanks - will push it out after a bit of testing.
Note that I also merged sched/urgent into x86/mm, to create a better base tree for the PCID changes by picking up 252d2a4117bc that PCID depends on.
Thanks,
Ingo
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