[PATCH v1 0/3] manually add Error Synchronization Barrier at exception handler entry and exit

From: Dongjiu Geng <gengdongjiu@huawei.com>
To: <catalin.marinas@arm.com>, <will.deacon@arm.com>,
	<marc.zyngier@arm.com>, <christoffer.dall@linaro.org>,
	<james.morse@arm.com>, <mark.rutland@arm.com>,
	<ard.biesheuvel@linaro.org>, <robin.murphy@arm.com>,
	<cov@codeaurora.org>, <Dave.Martin@arm.com>,
	<gengdongjiu@huawei.com>, <suzuki.poulose@arm.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <kvmarm@lists.cs.columbia.edu>
Subject: [PATCH v1 0/3] manually add Error Synchronization Barrier at exception handler entry and exit
Date: Thu, 2 Nov 2017 03:14:54 +0800	[thread overview]
Message-ID: <1509563697-6359-1-git-send-email-gengdongjiu@huawei.com> (raw)

Some hardware platform can support RAS Extension, but not support IESB,
such as Huawei's platform, so software need to insert Synchronization Barrier
operations at exception handler entry.

This series patches are based on  James's series patches "SError rework +
RAS&IESB for firmware first support". In Huawei's platform, we do not
support IESB, so software needs to insert that.

Dongjiu Geng (3):
  arm64: add a macro for SError synchronization
  arm64: add error synchronization barrier in kernel_entry/kernel_exit
  KVM: arm64: add ESB in exception handler entry and exit.

James Morse (18):
  arm64: explicitly mask all exceptions
  arm64: introduce an order for exceptions
  arm64: Move the async/fiq helpers to explicitly set process context
    flags
  arm64: Mask all exceptions during kernel_exit
  arm64: entry.S: Remove disable_dbg
  arm64: entry.S: convert el1_sync
  arm64: entry.S convert el0_sync
  arm64: entry.S: convert elX_irq
  KVM: arm/arm64: mask/unmask daif around VHE guests
  arm64: kernel: Survive corrected RAS errors notified by SError
  arm64: cpufeature: Enable IESB on exception entry/return for
    firmware-first
  arm64: kernel: Prepare for a DISR user
  KVM: arm64: Set an impdef ESR for Virtual-SError using VSESR_EL2.
  KVM: arm64: Save/Restore guest DISR_EL1
  KVM: arm64: Save ESR_EL2 on guest SError
  KVM: arm64: Handle RAS SErrors from EL1 on guest exit
  KVM: arm64: Handle RAS SErrors from EL2 on guest exit
  KVM: arm64: Take any host SError before entering the guest

Xie XiuQi (2):
  arm64: entry.S: move SError handling into a C function for future
    expansion
  arm64: cpufeature: Detect CPU RAS Extentions

 arch/arm64/Kconfig                   | 33 +++++++++++++-
 arch/arm64/include/asm/assembler.h   | 59 +++++++++++++++++-------
 arch/arm64/include/asm/barrier.h     |  1 +
 arch/arm64/include/asm/cpucaps.h     |  4 +-
 arch/arm64/include/asm/daifflags.h   | 61 +++++++++++++++++++++++++
 arch/arm64/include/asm/esr.h         | 17 +++++++
 arch/arm64/include/asm/exception.h   | 14 ++++++
 arch/arm64/include/asm/irqflags.h    | 40 ++++++----------
 arch/arm64/include/asm/kvm_emulate.h | 10 ++++
 arch/arm64/include/asm/kvm_host.h    | 16 +++++++
 arch/arm64/include/asm/processor.h   |  2 +
 arch/arm64/include/asm/sysreg.h      |  6 +++
 arch/arm64/include/asm/traps.h       | 36 +++++++++++++++
 arch/arm64/kernel/asm-offsets.c      |  1 +
 arch/arm64/kernel/cpufeature.c       | 43 ++++++++++++++++++
 arch/arm64/kernel/debug-monitors.c   |  5 +-
 arch/arm64/kernel/entry.S            | 88 +++++++++++++++++++++---------------
 arch/arm64/kernel/hibernate.c        |  5 +-
 arch/arm64/kernel/machine_kexec.c    |  4 +-
 arch/arm64/kernel/process.c          |  3 ++
 arch/arm64/kernel/setup.c            |  8 ++--
 arch/arm64/kernel/signal.c           |  8 +++-
 arch/arm64/kernel/smp.c              | 12 ++---
 arch/arm64/kernel/suspend.c          |  7 +--
 arch/arm64/kernel/traps.c            | 64 +++++++++++++++++++++++++-
 arch/arm64/kvm/handle_exit.c         | 19 +++++++-
 arch/arm64/kvm/hyp-init.S            |  3 ++
 arch/arm64/kvm/hyp/entry.S           | 15 ++++++
 arch/arm64/kvm/hyp/hyp-entry.S       |  1 +
 arch/arm64/kvm/hyp/switch.c          | 19 ++++++--
 arch/arm64/kvm/hyp/sysreg-sr.c       |  6 +++
 arch/arm64/kvm/inject_fault.c        | 13 +++++-
 arch/arm64/kvm/sys_regs.c            |  1 +
 arch/arm64/mm/proc.S                 | 14 ++++--
 virt/kvm/arm/arm.c                   |  4 ++
 35 files changed, 527 insertions(+), 115 deletions(-)
 create mode 100644 arch/arm64/include/asm/daifflags.h

-- 
1.9.1