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Groups > linux.kernel > #1422192
| From | Nadav Amit <nadav.amit@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak |
| Date | 2016-06-14 20:40 +0200 |
| Message-ID | <rK1pL-88-5@gated-at.bofh.it> (permalink) |
| References | <rJZHl-7nr-53@gated-at.bofh.it> <rK00F-7Kr-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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[PATCH] Linux VM workaround for Knights Landing A/D leak Lukasz Anaczkowski <lukasz.anaczkowski@intel.com> - 2016-06-14 18:00 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak kbuild test robot <lkp@intel.com> - 2016-06-14 18:40 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-14 18:50 +0200
RE: [PATCH] Linux VM workaround for Knights Landing A/D leak "Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com> - 2016-06-14 19:00 +0200
[PATCH v2] Linux VM workaround for Knights Landing A/D leak Lukasz Anaczkowski <lukasz.anaczkowski@intel.com> - 2016-06-14 19:10 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-14 19:30 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-06-14 20:40 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-14 21:00 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Borislav Petkov <bp@alien8.de> - 2016-06-14 21:20 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "H. Peter Anvin" <hpa@zytor.com> - 2016-06-14 22:30 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Borislav Petkov <bp@alien8.de> - 2016-06-14 22:50 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "H. Peter Anvin" <hpa@zytor.com> - 2016-06-14 23:00 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "H. Peter Anvin" <hpa@zytor.com> - 2016-06-14 23:10 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Borislav Petkov <bp@alien8.de> - 2016-06-14 23:10 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "H. Peter Anvin" <hpa@zytor.com> - 2016-06-14 23:20 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Borislav Petkov <bp@alien8.de> - 2016-06-14 20:20 +0200
RE: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com> - 2016-06-15 15:20 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-14 20:40 +0200
RE: [PATCH v2] Linux VM workaround for Knights Landing A/D leak "Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com> - 2016-06-15 15:20 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-15 22:10 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-15 22:20 +0200
Re: [PATCH v2] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-15 22:30 +0200
[PATCH v3] Linux VM workaround for Knights Landing A/D leak Lukasz Anaczkowski <lukasz.anaczkowski@intel.com> - 2016-06-16 17:20 +0200
Re: [PATCH v3] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-16 18:50 +0200
Re: [PATCH v3] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-16 22:30 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-14 19:20 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-14 22:20 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-14 23:40 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Andy Lutomirski <luto@amacapital.net> - 2016-06-15 04:30 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-15 04:40 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Andy Lutomirski <luto@amacapital.net> - 2016-06-15 04:40 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-15 04:50 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Andy Lutomirski <luto@amacapital.net> - 2016-06-15 05:10 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Nadav Amit <nadav.amit@gmail.com> - 2016-06-15 05:30 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak kbuild test robot <lkp@intel.com> - 2016-06-14 19:00 +0200
Re: [PATCH] Linux VM workaround for Knights Landing A/D leak Dave Hansen <dave.hansen@linux.intel.com> - 2016-06-14 19:30 +0200
RE: [PATCH] Linux VM workaround for Knights Landing A/D leak "Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com> - 2016-06-15 15:10 +0200
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