| Message ID | 20211208092611.1012773-1-ardb@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | [GIT,PULL] IRQ stacks and vmap'ed stack for ARM | expand |
On Wed, Dec 8, 2021 at 10:26 AM Ard Biesheuvel <ardb@kernel.org> wrote: > ---------------------------------------------------------------- > ARM: support for IRQ and vmap'ed stacks > > This PR covers all the work related to implementing IRQ stacks and > vmap'ed stacks for all 32-bit ARM systems that are currently supported > by the Linux kernel, including RiscPC and Footbridge. It has been > submitted for review in three different waves: > - IRQ stacks support for v7 SMP systems [0], > - vmap'ed stacks support for v7 SMP systems[1], > - extending support for both IRQ stacks and vmap'ed stacks for all > remaining configurations, including v6/v7 SMP multiplatform kernels > and uniprocessor configurations including v7-M [2] > I don't understand all the changes in the entry code, but the parts that I do understand all look good to me, I hope this can make it into v5.17. Reviewed-by: Arnd Bergmann <arnd@arndb.de>
On Wed, Dec 8, 2021 at 10:26 AM Ard Biesheuvel <ardb@kernel.org> wrote: > The following changes since commit fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf: > > Linux 5.16-rc1 (2021-11-14 13:56:52 -0800) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git tags/arm-irq-and-vmap-stacks-for-rmk > > for you to fetch changes up to cafc0eab168917ec9c0cd47d530a40cd40eb2928: > > ARM: v7m: enable support for IRQ stacks (2021-12-06 12:49:17 +0100) The general looks of this patch set are very pleasing, I'm a bit off the grid so I can't look at the fine details but my trust in that Ard will even out any rough edges is high so FWIW: Acked-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
On Thu, Dec 09, 2021 at 02:38:15PM +0100, Linus Walleij wrote: > On Wed, Dec 8, 2021 at 10:26 AM Ard Biesheuvel <ardb@kernel.org> wrote: > > > The following changes since commit fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf: > > > > Linux 5.16-rc1 (2021-11-14 13:56:52 -0800) > > > > are available in the Git repository at: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git tags/arm-irq-and-vmap-stacks-for-rmk > > > > for you to fetch changes up to cafc0eab168917ec9c0cd47d530a40cd40eb2928: > > > > ARM: v7m: enable support for IRQ stacks (2021-12-06 12:49:17 +0100) > > The general looks of this patch set are very pleasing, I'm a bit > off the grid so I can't look at the fine details but my trust in that > Ard will even out any rough edges is high so FWIW: > Acked-by: Linus Walleij <linus.walleij@linaro.org> Git pull time isn't the time for acks since they can't be added to the patches being pulled.
The following changes since commit fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf: Linux 5.16-rc1 (2021-11-14 13:56:52 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git tags/arm-irq-and-vmap-stacks-for-rmk for you to fetch changes up to cafc0eab168917ec9c0cd47d530a40cd40eb2928: ARM: v7m: enable support for IRQ stacks (2021-12-06 12:49:17 +0100) Cc: Russell King <linux@armlinux.org.uk> Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Kees Cook <keescook@chromium.org> Cc: Keith Packard <keithpac@amazon.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Vladimir Murzin <vladimir.murzin@arm.com> Cc: Jesse Taube <mr.bossman075@gmail.com> ---------------------------------------------------------------- ARM: support for IRQ and vmap'ed stacks This PR covers all the work related to implementing IRQ stacks and vmap'ed stacks for all 32-bit ARM systems that are currently supported by the Linux kernel, including RiscPC and Footbridge. It has been submitted for review in three different waves: - IRQ stacks support for v7 SMP systems [0], - vmap'ed stacks support for v7 SMP systems[1], - extending support for both IRQ stacks and vmap'ed stacks for all remaining configurations, including v6/v7 SMP multiplatform kernels and uniprocessor configurations including v7-M [2] [0] https://lore.kernel.org/linux-arm-kernel/20211115084732.3704393-1-ardb@kernel.org/ [1] https://lore.kernel.org/linux-arm-kernel/20211122092816.2865873-1-ardb@kernel.org/ [2] https://lore.kernel.org/linux-arm-kernel/20211206164659.1495084-1-ardb@kernel.org/ ---------------------------------------------------------------- Ard Biesheuvel (27): ARM: decompressor: disable stack protector ARM: stackprotector: prefer compiler for TLS based per-task protector ARM: remove some dead code ARM: assembler: introduce bl_r macro ARM: unwind: support unwinding across multiple stacks ARM: export dump_mem() to other objects ARM: unwind: dump exception stack from calling frame ARM: backtrace-clang: avoid crash on bogus frame pointer ARM: implement IRQ stacks ARM: call_with_stack: add unwind support ARM: run softirqs on the per-CPU IRQ stack ARM: memcpy: use frame pointer as unwind anchor ARM: memmove: use frame pointer as unwind anchor ARM: memset: clean up unwind annotations ARM: unwind: disregard unwind info before stack frame is set up ARM: switch_to: clean up Thumb2 code path ARM: entry: rework stack realignment code in svc_entry ARM: implement support for vmap'ed stacks ARM: riscpc: drop support for IOMD_IRQREQC/IOMD_IRQREQD IRQ groups ARM: entry: preserve thread_info pointer in switch_to ARM: module: implement support for PC-relative group relocations ARM: assembler: add optimized ldr/str macros to load variables from memory ARM: percpu: add SMP_ON_UP support ARM: use TLS register for 'current' on !SMP as well ARM: smp: defer TPIDRURO update for SMP v6 configurations too ARM: implement THREAD_INFO_IN_TASK for uniprocessor systems ARM: v7m: enable support for IRQ stacks Arnd Bergmann (5): ARM: riscpc: use GENERIC_IRQ_MULTI_HANDLER ARM: footbridge: use GENERIC_IRQ_MULTI_HANDLER ARM: iop32x: offset IRQ numbers by 1 ARM: iop32x: use GENERIC_IRQ_MULTI_HANDLER ARM: remove old-style irq entry Vladimir Murzin (1): irqchip: nvic: Use GENERIC_IRQ_MULTI_HANDLER arch/arm/Kconfig | 31 ++- arch/arm/Makefile | 9 + arch/arm/boot/compressed/Makefile | 6 +- arch/arm/boot/compressed/misc.c | 7 - arch/arm/include/asm/assembler.h | 204 ++++++++++++++++---- arch/arm/include/asm/current.h | 37 ++-- arch/arm/include/asm/elf.h | 3 + arch/arm/include/asm/entry-macro-multi.S | 40 ---- arch/arm/include/asm/hardware/entry-macro-iomd.S | 131 ------------- arch/arm/include/asm/insn.h | 24 +++ arch/arm/include/asm/irq.h | 1 - arch/arm/include/asm/mach/arch.h | 2 - arch/arm/include/asm/page.h | 4 + arch/arm/include/asm/percpu.h | 25 ++- arch/arm/include/asm/smp.h | 5 - arch/arm/include/asm/stacktrace.h | 12 ++ arch/arm/include/asm/switch_to.h | 3 +- arch/arm/include/asm/thread_info.h | 35 +--- arch/arm/include/asm/tls.h | 13 +- arch/arm/include/asm/v7m.h | 3 +- arch/arm/kernel/asm-offsets.c | 3 - arch/arm/kernel/entry-armv.S | 209 +++++++++++++++++---- arch/arm/kernel/entry-common.S | 16 +- arch/arm/kernel/entry-header.S | 48 ++++- arch/arm/kernel/entry-v7m.S | 39 ++-- arch/arm/kernel/head-common.S | 4 +- arch/arm/kernel/irq.c | 61 ++++-- arch/arm/kernel/module.c | 85 +++++++++ arch/arm/kernel/process.c | 7 +- arch/arm/kernel/setup.c | 8 +- arch/arm/kernel/sleep.S | 6 + arch/arm/kernel/smp.c | 16 +- arch/arm/kernel/traps.c | 107 ++++++++++- arch/arm/kernel/unwind.c | 50 +++-- arch/arm/kernel/vmlinux.lds.S | 4 +- arch/arm/lib/backtrace-clang.S | 14 +- arch/arm/lib/backtrace.S | 8 + arch/arm/lib/call_with_stack.S | 33 +++- arch/arm/lib/copy_from_user.S | 13 +- arch/arm/lib/copy_template.S | 67 +++---- arch/arm/lib/copy_to_user.S | 13 +- arch/arm/lib/memcpy.S | 13 +- arch/arm/lib/memmove.S | 60 ++---- arch/arm/lib/memset.S | 7 +- arch/arm/mach-footbridge/common.c | 87 +++++++++ .../arm/mach-footbridge/include/mach/entry-macro.S | 107 ----------- arch/arm/mach-iop32x/cp6.c | 10 +- arch/arm/mach-iop32x/include/mach/entry-macro.S | 31 --- arch/arm/mach-iop32x/include/mach/irqs.h | 2 +- arch/arm/mach-iop32x/iop3xx.h | 1 + arch/arm/mach-iop32x/irq.c | 29 ++- arch/arm/mach-iop32x/irqs.h | 60 +++--- arch/arm/mach-rpc/fiq.S | 5 +- arch/arm/mach-rpc/include/mach/entry-macro.S | 13 -- arch/arm/mach-rpc/irq.c | 95 ++++++++++ arch/arm/mm/Kconfig | 1 + drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-nvic.c | 22 +-- 58 files changed, 1217 insertions(+), 733 deletions(-) delete mode 100644 arch/arm/include/asm/entry-macro-multi.S delete mode 100644 arch/arm/include/asm/hardware/entry-macro-iomd.S delete mode 100644 arch/arm/mach-footbridge/include/mach/entry-macro.S delete mode 100644 arch/arm/mach-iop32x/include/mach/entry-macro.S delete mode 100644 arch/arm/mach-rpc/include/mach/entry-macro.S