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Subject: Re: [PATCH 09/11] x86/pti: enable global pages for shared areas
To:     Nadav Amit <namit@vmware.com>
References: <20180323174447.55F35636@viggo.jf.intel.com>
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From:   Dave Hansen <dave.hansen@linux.intel.com>
Message-ID: <4f97f448-307f-1095-84cc-1b7444eb78a8@linux.intel.com>
Date:   Fri, 23 Mar 2018 12:36:58 -0700
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On 03/23/2018 12:12 PM, Nadav Amit wrote:
>> 		/*
>> +		 * Setting 'target_pmd' below creates a mapping in both
>> +		 * the user and kernel page tables.  It is effectively
>> +		 * global, so set it as global in both copies.
>> +		 */
>> +		*pmd = pmd_set_flags(*pmd, _PAGE_GLOBAL);
> if (boot_cpu_has(X86_FEATURE_PGE)) ?

Good catch.  I'll update that.