From: Alexander Potapenko <glider@google.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"the arch/x86 maintainers" <x86@kernel.org>,
Kostya Serebryany <kcc@google.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Taras Madan <tarasmadan@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
"H . J . Lu" <hjl.tools@gmail.com>,
Andi Kleen <ak@linux.intel.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Linux Memory Management List <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCHv6 06/11] x86/mm: Provide arch_prctl() interface for LAM
Date: Tue, 23 Aug 2022 15:16:30 +0200 [thread overview]
Message-ID: <CAG_fn=XZEo00mBLUFzxMVEf0eKajkaDWj-ry3na_n5dzC_P_AA@mail.gmail.com> (raw)
In-Reply-To: <CAG_fn=VnedgJL62cL2bvjsp1yrxc_ngbtRPoLXhY9JsJJhz+2w@mail.gmail.com>
On Mon, Aug 22, 2022 at 11:32 AM Alexander Potapenko <glider@google.com> wrote:
>
> On Mon, Aug 15, 2022 at 6:15 AM Kirill A. Shutemov
> <kirill.shutemov@linux.intel.com> wrote:
> >
> > Add a couple of arch_prctl() handles:
> >
> > - ARCH_ENABLE_TAGGED_ADDR enabled LAM. The argument is required number
> > of tag bits. It is rounded up to the nearest LAM mode that can
> > provide it. For now only LAM_U57 is supported, with 6 tag bits.
> >
> > - ARCH_GET_UNTAG_MASK returns untag mask. It can indicates where tag
> > bits located in the address.
> >
> > - ARCH_GET_MAX_TAG_BITS returns the maximum tag bits user can request.
> > Zero if LAM is not supported.
> >
> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Reviewed-by: Alexander Potapenko <glider@google.com>
And also:
Tested-by: Alexander Potapenko <glider@google.com>
next prev parent reply other threads:[~2022-08-23 16:50 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-15 4:17 [PATCHv6 00/11] Linear Address Masking enabling Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 01/11] x86/mm: Fix CR3_ADDR_MASK Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 02/11] x86: CPUID and CR3/CR4 flags for Linear Address Masking Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 03/11] mm: Pass down mm_struct to untagged_addr() Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 04/11] x86/mm: Handle LAM on context switch Kirill A. Shutemov
2022-08-15 13:33 ` Peter Zijlstra
2022-08-15 13:42 ` Peter Zijlstra
2022-08-15 17:37 ` Kirill A. Shutemov
2022-08-15 18:02 ` Peter Zijlstra
2022-08-16 0:07 ` [PATCHv6.1 " Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 05/11] x86/uaccess: Provide untagged_addr() and remove tags before address check Kirill A. Shutemov
2022-08-15 4:17 ` [PATCHv6 06/11] x86/mm: Provide arch_prctl() interface for LAM Kirill A. Shutemov
2022-08-15 13:37 ` Peter Zijlstra
2022-08-15 17:52 ` Kirill A. Shutemov
2022-08-16 0:10 ` [PATCHv6.1 " Kirill A. Shutemov
2022-08-22 9:32 ` [PATCHv6 " Alexander Potapenko
2022-08-23 13:16 ` Alexander Potapenko [this message]
2022-08-15 4:17 ` [PATCHv6 07/11] x86: Expose untagging mask in /proc/$PID/arch_status Kirill A. Shutemov
2022-08-15 4:18 ` [PATCHv6 08/11] selftests/x86/lam: Add malloc and tag-bits test cases for linear-address masking Kirill A. Shutemov
2022-08-19 5:17 ` Hu, Robert
2022-08-22 5:21 ` Zhang, Weihong
2022-08-15 4:18 ` [PATCHv6 09/11] selftests/x86/lam: Add mmap and SYSCALL " Kirill A. Shutemov
2022-08-19 8:15 ` Hu, Robert
2022-08-22 8:47 ` Zhang, Weihong
2022-08-15 4:18 ` [PATCHv6 10/11] selftests/x86/lam: Add io_uring " Kirill A. Shutemov
2022-08-15 4:18 ` [PATCHv6 11/11] selftests/x86/lam: Add inherit " Kirill A. Shutemov
2022-08-15 13:43 ` [PATCHv6 00/11] Linear Address Masking enabling Peter Zijlstra
2022-08-23 8:58 ` Alexander Potapenko
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