From: Linus Walleij <linus.walleij@linaro.org> To: "Russell King (Oracle)" <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com>, Krzysztof Halasa <khalasa@piap.pl>, Neil Armstrong <narmstrong@baylibre.com>, Peter Zijlstra <peterz@infradead.org>, Andy Lutomirski <luto@kernel.org>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@kernel.org>, Dave Hansen <dave.hansen@intel.com>, LKML <linux-kernel@vger.kernel.org>, Linux Memory Management List <linux-mm@kvack.org>, Andrew Morton <akpm@linux-foundation.org>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Nicholas Piggin <npiggin@gmail.com>, Linux ARM <linux-arm-kernel@lists.infradead.org>, Will Deacon <will@kernel.org> Subject: Re: [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE Date: Fri, 18 Jun 2021 14:54:05 +0200 [thread overview] Message-ID: <CACRpkdYHoC66K7W6mUMqKfAJkcKeopBnAq8Rq+tLSdLo61jtAQ@mail.gmail.com> (raw) In-Reply-To: <20210616162716.GH22278@shell.armlinux.org.uk> On Wed, Jun 16, 2021 at 6:27 PM Russell King (Oracle) <linux@armlinux.org.uk> wrote: > Arnd tells me that the current remaining ARM11MPCore users are: > - CNS3xxx (where there is some martinal interest in the Gateworks > Laguna platform) > - Similar for OXNAS > - There used to be the Realview MPCore tile - I haven't turned that on > in ages, and it may be that the 3V cell that backs up the encryption > keys is dead so it may not even boot. I have this machine with 4 x ARM11 MPCore, it works like a charm. I use it to test exactly this kind of stuff, I know if a kernel works on ARM11MPCore it works on anything because of how fragile it is. > So it seems to come down to a question about CNS3xxx and OXNAS. If > these aren't being used, maybe we can drop ARM11MPCore support and > the associated platforms? > > Linus, Krzysztof, Neil, any input? I don't especially need to keep the ARM11MPCore machine alive, it is just a testchip after all. The Oxnas is another story, that has wide deployment and was contributed recently (2016) and has excellent support in OpenWrt so I wouldn't really want to axe that. Yours, Linus Walleij
WARNING: multiple messages have this Message-ID (diff)
From: Linus Walleij <linus.walleij@linaro.org> To: "Russell King (Oracle)" <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com>, Krzysztof Halasa <khalasa@piap.pl>, Neil Armstrong <narmstrong@baylibre.com>, Peter Zijlstra <peterz@infradead.org>, Andy Lutomirski <luto@kernel.org>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@kernel.org>, Dave Hansen <dave.hansen@intel.com>, LKML <linux-kernel@vger.kernel.org>, Linux Memory Management List <linux-mm@kvack.org>, Andrew Morton <akpm@linux-foundation.org>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Nicholas Piggin <npiggin@gmail.com>, Linux ARM <linux-arm-kernel@lists.infradead.org>, Will Deacon <will@kernel.org> Subject: Re: [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE Date: Fri, 18 Jun 2021 14:54:05 +0200 [thread overview] Message-ID: <CACRpkdYHoC66K7W6mUMqKfAJkcKeopBnAq8Rq+tLSdLo61jtAQ@mail.gmail.com> (raw) In-Reply-To: <20210616162716.GH22278@shell.armlinux.org.uk> On Wed, Jun 16, 2021 at 6:27 PM Russell King (Oracle) <linux@armlinux.org.uk> wrote: > Arnd tells me that the current remaining ARM11MPCore users are: > - CNS3xxx (where there is some martinal interest in the Gateworks > Laguna platform) > - Similar for OXNAS > - There used to be the Realview MPCore tile - I haven't turned that on > in ages, and it may be that the 3V cell that backs up the encryption > keys is dead so it may not even boot. I have this machine with 4 x ARM11 MPCore, it works like a charm. I use it to test exactly this kind of stuff, I know if a kernel works on ARM11MPCore it works on anything because of how fragile it is. > So it seems to come down to a question about CNS3xxx and OXNAS. If > these aren't being used, maybe we can drop ARM11MPCore support and > the associated platforms? > > Linus, Krzysztof, Neil, any input? I don't especially need to keep the ARM11MPCore machine alive, it is just a testchip after all. The Oxnas is another story, that has wide deployment and was contributed recently (2016) and has excellent support in OpenWrt so I wouldn't really want to axe that. Yours, Linus Walleij _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-06-18 12:54 UTC|newest] Thread overview: 165+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-16 3:21 [PATCH 0/8] membarrier cleanups Andy Lutomirski 2021-06-16 3:21 ` [PATCH 1/8] membarrier: Document why membarrier() works Andy Lutomirski 2021-06-16 4:00 ` Nicholas Piggin 2021-06-16 7:30 ` Peter Zijlstra 2021-06-17 23:45 ` Andy Lutomirski 2021-06-16 3:21 ` [PATCH 2/8] x86/mm: Handle unlazying membarrier core sync in the arch code Andy Lutomirski 2021-06-16 4:25 ` Nicholas Piggin 2021-06-16 18:31 ` Andy Lutomirski 2021-06-16 17:49 ` Mathieu Desnoyers 2021-06-16 17:49 ` Mathieu Desnoyers 2021-06-16 18:31 ` Andy Lutomirski 2021-06-16 3:21 ` [PATCH 3/8] membarrier: Remove membarrier_arch_switch_mm() prototype in core code Andy Lutomirski 2021-06-16 4:26 ` Nicholas Piggin 2021-06-16 17:52 ` Mathieu Desnoyers 2021-06-16 17:52 ` Mathieu Desnoyers 2021-06-16 3:21 ` [PATCH 4/8] membarrier: Make the post-switch-mm barrier explicit Andy Lutomirski 2021-06-16 4:19 ` Nicholas Piggin 2021-06-16 7:35 ` Peter Zijlstra 2021-06-16 18:41 ` Andy Lutomirski 2021-06-17 1:37 ` Nicholas Piggin 2021-06-17 2:57 ` Andy Lutomirski 2021-06-17 5:32 ` Andy Lutomirski 2021-06-17 6:51 ` Nicholas Piggin 2021-06-17 23:49 ` Andy Lutomirski 2021-06-19 2:53 ` Nicholas Piggin 2021-06-19 3:20 ` Andy Lutomirski 2021-06-19 4:27 ` Nicholas Piggin 2021-06-17 9:08 ` [RFC][PATCH] sched: Use lightweight hazard pointers to grab lazy mms Peter Zijlstra 2021-06-17 9:10 ` Peter Zijlstra 2021-06-17 10:00 ` Nicholas Piggin 2021-06-17 9:13 ` Peter Zijlstra 2021-06-17 14:06 ` Andy Lutomirski 2021-06-17 9:28 ` Peter Zijlstra 2021-06-17 14:03 ` Andy Lutomirski 2021-06-17 14:10 ` Andy Lutomirski 2021-06-17 15:45 ` Peter Zijlstra 2021-06-18 3:29 ` Paul E. McKenney 2021-06-18 5:04 ` Andy Lutomirski 2021-06-17 15:02 ` [PATCH 4/8] membarrier: Make the post-switch-mm barrier explicit Paul E. McKenney 2021-06-18 0:06 ` Andy Lutomirski 2021-06-18 3:35 ` Paul E. McKenney 2021-06-17 8:45 ` Peter Zijlstra 2021-06-16 3:21 ` [PATCH 5/8] membarrier, kthread: Use _ONCE accessors for task->mm Andy Lutomirski 2021-06-16 4:28 ` Nicholas Piggin 2021-06-16 18:08 ` Mathieu Desnoyers 2021-06-16 18:08 ` Mathieu Desnoyers 2021-06-16 18:45 ` Andy Lutomirski 2021-06-16 3:21 ` [PATCH 6/8] powerpc/membarrier: Remove special barrier on mm switch Andy Lutomirski 2021-06-16 3:21 ` Andy Lutomirski 2021-06-16 4:36 ` Nicholas Piggin 2021-06-16 4:36 ` Nicholas Piggin 2021-06-16 3:21 ` [PATCH 7/8] membarrier: Remove arm (32) support for SYNC_CORE Andy Lutomirski 2021-06-16 3:21 ` Andy Lutomirski 2021-06-16 9:28 ` Russell King (Oracle) 2021-06-16 9:28 ` Russell King (Oracle) 2021-06-16 10:16 ` Peter Zijlstra 2021-06-16 10:16 ` Peter Zijlstra 2021-06-16 10:20 ` Peter Zijlstra 2021-06-16 10:20 ` Peter Zijlstra 2021-06-16 10:34 ` Russell King (Oracle) 2021-06-16 10:34 ` Russell King (Oracle) 2021-06-16 11:10 ` Peter Zijlstra 2021-06-16 11:10 ` Peter Zijlstra 2021-06-16 13:22 ` Russell King (Oracle) 2021-06-16 13:22 ` Russell King (Oracle) 2021-06-16 15:04 ` Catalin Marinas 2021-06-16 15:04 ` Catalin Marinas 2021-06-16 15:23 ` Russell King (Oracle) 2021-06-16 15:23 ` Russell King (Oracle) 2021-06-16 15:45 ` Catalin Marinas 2021-06-16 15:45 ` Catalin Marinas 2021-06-16 16:00 ` Catalin Marinas 2021-06-16 16:00 ` Catalin Marinas 2021-06-16 16:27 ` Russell King (Oracle) 2021-06-16 16:27 ` Russell King (Oracle) 2021-06-17 8:55 ` Krzysztof Hałasa 2021-06-17 8:55 ` Krzysztof Hałasa 2021-06-17 8:55 ` Krzysztof Hałasa 2021-06-18 12:54 ` Linus Walleij [this message] 2021-06-18 12:54 ` Linus Walleij 2021-06-18 12:54 ` Linus Walleij 2021-06-18 13:19 ` Russell King (Oracle) 2021-06-18 13:19 ` Russell King (Oracle) 2021-06-18 13:36 ` Arnd Bergmann 2021-06-18 13:36 ` Arnd Bergmann 2021-06-18 13:36 ` Arnd Bergmann 2021-06-17 10:40 ` Mark Rutland 2021-06-17 10:40 ` Mark Rutland 2021-06-17 11:23 ` Russell King (Oracle) 2021-06-17 11:23 ` Russell King (Oracle) 2021-06-17 11:33 ` Mark Rutland 2021-06-17 11:33 ` Mark Rutland 2021-06-17 13:41 ` Andy Lutomirski 2021-06-17 13:41 ` Andy Lutomirski 2021-06-17 13:51 ` Mark Rutland 2021-06-17 13:51 ` Mark Rutland 2021-06-17 14:00 ` Andy Lutomirski 2021-06-17 14:00 ` Andy Lutomirski 2021-06-17 14:20 ` Mark Rutland 2021-06-17 14:20 ` Mark Rutland 2021-06-17 15:01 ` Peter Zijlstra 2021-06-17 15:01 ` Peter Zijlstra 2021-06-17 15:13 ` Peter Zijlstra 2021-06-17 15:13 ` Peter Zijlstra 2021-06-17 14:16 ` Mathieu Desnoyers 2021-06-17 14:16 ` Mathieu Desnoyers 2021-06-17 14:05 ` Peter Zijlstra 2021-06-17 14:05 ` Peter Zijlstra 2021-06-18 0:07 ` Andy Lutomirski 2021-06-18 0:07 ` Andy Lutomirski 2021-06-16 3:21 ` [PATCH 8/8] membarrier: Rewrite sync_core_before_usermode() and improve documentation Andy Lutomirski 2021-06-16 3:21 ` Andy Lutomirski 2021-06-16 3:21 ` Andy Lutomirski 2021-06-16 4:45 ` Nicholas Piggin 2021-06-16 4:45 ` Nicholas Piggin 2021-06-16 4:45 ` Nicholas Piggin 2021-06-16 18:52 ` Andy Lutomirski 2021-06-16 18:52 ` Andy Lutomirski 2021-06-16 18:52 ` Andy Lutomirski 2021-06-16 23:48 ` Andy Lutomirski 2021-06-16 23:48 ` Andy Lutomirski 2021-06-16 23:48 ` Andy Lutomirski 2021-06-18 15:27 ` Christophe Leroy 2021-06-18 15:27 ` Christophe Leroy 2021-06-18 15:27 ` Christophe Leroy 2021-06-16 10:20 ` Will Deacon 2021-06-16 10:20 ` Will Deacon 2021-06-16 10:20 ` Will Deacon 2021-06-16 23:58 ` Andy Lutomirski 2021-06-16 23:58 ` Andy Lutomirski 2021-06-16 23:58 ` Andy Lutomirski 2021-06-17 14:47 ` Mathieu Desnoyers 2021-06-17 14:47 ` Mathieu Desnoyers 2021-06-17 14:47 ` Mathieu Desnoyers 2021-06-17 14:47 ` Mathieu Desnoyers 2021-06-18 0:12 ` Andy Lutomirski 2021-06-18 0:12 ` Andy Lutomirski 2021-06-18 0:12 ` Andy Lutomirski 2021-06-18 16:31 ` Mathieu Desnoyers 2021-06-18 16:31 ` Mathieu Desnoyers 2021-06-18 16:31 ` Mathieu Desnoyers 2021-06-18 16:31 ` Mathieu Desnoyers 2021-06-18 19:58 ` Andy Lutomirski 2021-06-18 19:58 ` Andy Lutomirski 2021-06-18 19:58 ` Andy Lutomirski 2021-06-18 20:09 ` Mathieu Desnoyers 2021-06-18 20:09 ` Mathieu Desnoyers 2021-06-18 20:09 ` Mathieu Desnoyers 2021-06-18 20:09 ` Mathieu Desnoyers 2021-06-19 6:02 ` Nicholas Piggin 2021-06-19 6:02 ` Nicholas Piggin 2021-06-19 6:02 ` Nicholas Piggin 2021-06-19 15:50 ` Andy Lutomirski 2021-06-19 15:50 ` Andy Lutomirski 2021-06-19 15:50 ` Andy Lutomirski 2021-06-20 2:10 ` Nicholas Piggin 2021-06-20 2:10 ` Nicholas Piggin 2021-06-20 2:10 ` Nicholas Piggin 2021-06-17 15:16 ` Mathieu Desnoyers 2021-06-17 15:16 ` Mathieu Desnoyers 2021-06-17 15:16 ` Mathieu Desnoyers 2021-06-17 15:16 ` Mathieu Desnoyers 2021-06-18 0:13 ` Andy Lutomirski 2021-06-18 0:13 ` Andy Lutomirski 2021-06-18 0:13 ` Andy Lutomirski
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