From: Will Deacon <will@kernel.org> To: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org, Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, Marc Zyngier <maz@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Peter Zijlstra <peterz@infradead.org>, Morten Rasmussen <morten.rasmussen@arm.com>, Qais Yousef <qais.yousef@arm.com>, Suren Baghdasaryan <surenb@google.com>, Quentin Perret <qperret@google.com>, kernel-team@android.com Subject: [PATCH v2 0/6] An alternative series for asymmetric AArch32 systems Date: Mon, 9 Nov 2020 21:30:16 +0000 [thread overview] Message-ID: <20201109213023.15092-1-will@kernel.org> (raw) Hello again, This is version two of the ravingly popular series I previously posted here: https://lore.kernel.org/r/20201021104611.2744565-1-qais.yousef@arm.com Changes since v1 include: * Fix setting of compat hwcaps * Simplify sysfs code to use DEVICE_ATTR_RO() * Allow onlining of late CPUs in face of mismatch * Use a static key in the context-switch path * Avoid printing that we detected 32-bit EL0 support when we didn't This has unfortunately introduced more complexity than I would've liked, but it also seems to be free of any rough edges. I haven't yet tackled the execve() problem raised by Suren. I've got some local hacks, but nothing I'm happy with yet. They will come as follow-up patches in any case. As before, I don't think we should merge this stuff until we've figured out what's going on in Android, but hopefully we can reach some agreement on the basics before then. Cheers, Will Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Morten Rasmussen <morten.rasmussen@arm.com> Cc: Qais Yousef <qais.yousef@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Quentin Perret <qperret@google.com> Cc: kernel-team@android.com --->8 Will Deacon (6): arm64: cpuinfo: Split AArch32 registers out into a separate struct arm64: Allow mismatched 32-bit EL0 support KVM: arm64: Kill 32-bit vCPUs on systems with mismatched EL0 support arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs arm64: Advertise CPUs capable of running 32-bit applications in sysfs arm64: Hook up cmdline parameter to allow mismatched 32-bit EL0 .../ABI/testing/sysfs-devices-system-cpu | 9 + .../admin-guide/kernel-parameters.txt | 7 + arch/arm64/include/asm/cpu.h | 44 ++-- arch/arm64/include/asm/cpucaps.h | 2 +- arch/arm64/include/asm/cpufeature.h | 8 +- arch/arm64/kernel/cpufeature.c | 198 ++++++++++++++---- arch/arm64/kernel/cpuinfo.c | 53 ++--- arch/arm64/kernel/process.c | 19 +- arch/arm64/kernel/signal.c | 26 +++ arch/arm64/kvm/arm.c | 11 +- 10 files changed, 288 insertions(+), 89 deletions(-) -- 2.29.2.222.g5d2a92d10f8-goog
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org> To: linux-arm-kernel@lists.infradead.org Cc: linux-arch@vger.kernel.org, Marc Zyngier <maz@kernel.org>, kernel-team@android.com, Quentin Perret <qperret@google.com>, Peter Zijlstra <peterz@infradead.org>, Catalin Marinas <catalin.marinas@arm.com>, Qais Yousef <qais.yousef@arm.com>, Suren Baghdasaryan <surenb@google.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Will Deacon <will@kernel.org>, Morten Rasmussen <morten.rasmussen@arm.com> Subject: [PATCH v2 0/6] An alternative series for asymmetric AArch32 systems Date: Mon, 9 Nov 2020 21:30:16 +0000 [thread overview] Message-ID: <20201109213023.15092-1-will@kernel.org> (raw) Hello again, This is version two of the ravingly popular series I previously posted here: https://lore.kernel.org/r/20201021104611.2744565-1-qais.yousef@arm.com Changes since v1 include: * Fix setting of compat hwcaps * Simplify sysfs code to use DEVICE_ATTR_RO() * Allow onlining of late CPUs in face of mismatch * Use a static key in the context-switch path * Avoid printing that we detected 32-bit EL0 support when we didn't This has unfortunately introduced more complexity than I would've liked, but it also seems to be free of any rough edges. I haven't yet tackled the execve() problem raised by Suren. I've got some local hacks, but nothing I'm happy with yet. They will come as follow-up patches in any case. As before, I don't think we should merge this stuff until we've figured out what's going on in Android, but hopefully we can reach some agreement on the basics before then. Cheers, Will Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Morten Rasmussen <morten.rasmussen@arm.com> Cc: Qais Yousef <qais.yousef@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Quentin Perret <qperret@google.com> Cc: kernel-team@android.com --->8 Will Deacon (6): arm64: cpuinfo: Split AArch32 registers out into a separate struct arm64: Allow mismatched 32-bit EL0 support KVM: arm64: Kill 32-bit vCPUs on systems with mismatched EL0 support arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs arm64: Advertise CPUs capable of running 32-bit applications in sysfs arm64: Hook up cmdline parameter to allow mismatched 32-bit EL0 .../ABI/testing/sysfs-devices-system-cpu | 9 + .../admin-guide/kernel-parameters.txt | 7 + arch/arm64/include/asm/cpu.h | 44 ++-- arch/arm64/include/asm/cpucaps.h | 2 +- arch/arm64/include/asm/cpufeature.h | 8 +- arch/arm64/kernel/cpufeature.c | 198 ++++++++++++++---- arch/arm64/kernel/cpuinfo.c | 53 ++--- arch/arm64/kernel/process.c | 19 +- arch/arm64/kernel/signal.c | 26 +++ arch/arm64/kvm/arm.c | 11 +- 10 files changed, 288 insertions(+), 89 deletions(-) -- 2.29.2.222.g5d2a92d10f8-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-11-09 21:30 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-09 21:30 Will Deacon [this message] 2020-11-09 21:30 ` [PATCH v2 0/6] An alternative series for asymmetric AArch32 systems Will Deacon 2020-11-09 21:30 ` [PATCH v2 1/6] arm64: cpuinfo: Split AArch32 registers out into a separate struct Will Deacon 2020-11-09 21:30 ` Will Deacon 2020-11-09 21:30 ` [PATCH v2 2/6] arm64: Allow mismatched 32-bit EL0 support Will Deacon 2020-11-09 21:30 ` Will Deacon 2020-11-11 19:10 ` Catalin Marinas 2020-11-11 19:10 ` Catalin Marinas 2020-11-13 9:36 ` Will Deacon 2020-11-13 9:36 ` Will Deacon 2020-11-13 10:26 ` Catalin Marinas 2020-11-13 10:26 ` Catalin Marinas 2020-11-09 21:30 ` [PATCH v2 3/6] KVM: arm64: Kill 32-bit vCPUs on systems with mismatched " Will Deacon 2020-11-09 21:30 ` Will Deacon 2020-11-10 9:33 ` Marc Zyngier 2020-11-10 9:33 ` Marc Zyngier 2020-11-09 21:30 ` [PATCH v2 4/6] arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs Will Deacon 2020-11-09 21:30 ` Will Deacon 2020-11-09 21:30 ` [PATCH v2 5/6] arm64: Advertise CPUs capable of running 32-bit applications in sysfs Will Deacon 2020-11-09 21:30 ` Will Deacon 2020-11-10 7:04 ` Greg Kroah-Hartman 2020-11-10 7:04 ` Greg Kroah-Hartman 2020-11-10 9:28 ` Catalin Marinas 2020-11-10 9:28 ` Catalin Marinas 2020-11-10 9:36 ` Greg Kroah-Hartman 2020-11-10 9:36 ` Greg Kroah-Hartman 2020-11-10 9:53 ` Marc Zyngier 2020-11-10 9:53 ` Marc Zyngier 2020-11-10 10:10 ` Greg Kroah-Hartman 2020-11-10 10:10 ` Greg Kroah-Hartman 2020-11-10 10:46 ` Marc Zyngier 2020-11-10 10:46 ` Marc Zyngier 2020-11-10 10:57 ` Catalin Marinas 2020-11-10 10:57 ` Catalin Marinas 2020-11-09 21:30 ` [PATCH v2 6/6] arm64: Hook up cmdline parameter to allow mismatched 32-bit EL0 Will Deacon 2020-11-09 21:30 ` Will Deacon
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20201109213023.15092-1-will@kernel.org \ --to=will@kernel.org \ --cc=catalin.marinas@arm.com \ --cc=gregkh@linuxfoundation.org \ --cc=kernel-team@android.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=maz@kernel.org \ --cc=morten.rasmussen@arm.com \ --cc=peterz@infradead.org \ --cc=qais.yousef@arm.com \ --cc=qperret@google.com \ --cc=surenb@google.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.