From: Nadav Amit <nadav.amit@gmail.com>
To: Lukasz Anaczkowski <lukasz.anaczkowski@intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
ak@linux.intel.com, kirill.shutemov@linux.intel.com,
mhocko@suse.com, Andrew Morton <akpm@linux-foundation.org>,
"H. Peter Anvin" <hpa@zytor.com>,
harish.srinivasappa@intel.com, lukasz.odzioba@intel.com,
grzegorz.andrejczuk@intel.com, lukasz.daniluk@intel.com
Subject: Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak
Date: Tue, 14 Jun 2016 11:38:07 -0700 [thread overview]
Message-ID: <76F6D5F2-6723-441B-BD63-52628731F1FF@gmail.com> (raw)
In-Reply-To: <1465923672-14232-1-git-send-email-lukasz.anaczkowski@intel.com>
Lukasz Anaczkowski <lukasz.anaczkowski@intel.com> wrote:
> From: Andi Kleen <ak@linux.intel.com>
> static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> unsigned long addr, pte_t *ptep)
> {
> - return ptep_get_and_clear(mm, addr, ptep);
> + pte_t pte = ptep_get_and_clear(mm, addr, ptep);
> +
> + if (boot_cpu_has_bug(X86_BUG_PTE_LEAK))
> + fix_pte_leak(mm, addr, ptep);
> + return pte;
> }
I missed it on the previous iteration: ptep_get_and_clear already calls
fix_pte_leak when needed. So do you need to call it again here?
Thanks,
Nadav
next prev parent reply other threads:[~2016-06-14 18:38 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-14 15:58 [PATCH] Linux VM workaround for Knights Landing A/D leak Lukasz Anaczkowski
2016-06-14 16:31 ` kbuild test robot
2016-06-14 16:47 ` Nadav Amit
2016-06-14 16:54 ` Anaczkowski, Lukasz
2016-06-14 17:01 ` [PATCH v2] " Lukasz Anaczkowski
2016-06-14 17:24 ` Dave Hansen
2016-06-14 18:34 ` One Thousand Gnomes
2016-06-14 18:54 ` Dave Hansen
2016-06-14 19:19 ` Borislav Petkov
2016-06-14 20:20 ` H. Peter Anvin
2016-06-14 20:47 ` Borislav Petkov
2016-06-14 20:54 ` H. Peter Anvin
2016-06-14 21:02 ` Borislav Petkov
2016-06-14 21:08 ` H. Peter Anvin
2016-06-14 21:13 ` H. Peter Anvin
2016-06-14 18:10 ` Borislav Petkov
2016-06-15 13:12 ` Anaczkowski, Lukasz
2016-06-14 18:38 ` Nadav Amit [this message]
2016-06-15 13:12 ` Anaczkowski, Lukasz
2016-06-15 20:04 ` Nadav Amit
2016-06-15 20:10 ` Dave Hansen
2016-06-15 20:26 ` Nadav Amit
2016-06-16 15:14 ` [PATCH v3] " Lukasz Anaczkowski
2016-06-16 16:43 ` Nadav Amit
2016-06-16 20:23 ` Dave Hansen
2016-06-14 17:18 ` [PATCH] " Dave Hansen
2016-06-14 20:16 ` Nadav Amit
2016-06-14 21:37 ` Dave Hansen
2016-06-15 2:20 ` Andy Lutomirski
2016-06-15 2:35 ` Nadav Amit
2016-06-15 2:36 ` Andy Lutomirski
2016-06-15 2:44 ` Nadav Amit
2016-06-15 3:09 ` Andy Lutomirski
2016-06-15 3:20 ` Nadav Amit
2016-06-14 16:58 ` kbuild test robot
2016-06-14 17:19 ` Dave Hansen
2016-06-15 13:06 ` Anaczkowski, Lukasz
2016-06-14 17:47 ` kbuild test robot
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