From: Jinjie Ruan <ruanjinjie@huawei.com>
To: Will Deacon <will@kernel.org>, <linux-arm-kernel@lists.infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Linus Walleij <linusw@kernel.org>,
linux-kernel@vger.kernel.org, Mostafa Saleh <smostafa@google.com>,
Marc Zyngier <maz@kernel.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>,
Oliver Upton <oupton@kernel.org>,
Ard Biesheuvel <ardb@kernel.org>
Subject: Re: [PATCH v2 07/21] selftests/bpf: arm64: Use TPIDRRO_EL0 instead of SP_EL0 for 'current'
Date: Thu, 8 Oct 2026 15:55:46 +0800 [thread overview]
Message-ID: <7d3fd515-50fe-4f11-a44b-68192c84f1df@huawei.com> (raw)
In-Reply-To: <20260918161407.2300-8-will@kernel.org>
在 2026/9/19 0:13, Will Deacon 写道:
> The current task pointer now lives in TPIDRRO_EL0 instead of SP_EL0, so
> update the bpf selftests with the new register allocation.
>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Signed-off-by: Will Deacon <will@kernel.org>
> ---
> tools/testing/selftests/bpf/progs/verifier_jit_inline.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/progs/verifier_jit_inline.c b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
> index 02e562f56f9d..a3d6c095acc3 100644
> --- a/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
> +++ b/tools/testing/selftests/bpf/progs/verifier_jit_inline.c
> @@ -9,7 +9,7 @@ __success __retval(0)
> __arch_x86_64
> __jited(" addq %gs:{{.*}}, %rax")
> __arch_arm64
> -__jited(" mrs x8, SP_EL0")
> +__jited(" mrs x8, TPIDRRO_EL0")
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
> __arch_riscv64
> __jited(" mv a5, tp")
> __arch_loongarch
--
Best regards,
Jinjie
next prev parent reply other threads:[~2026-10-08 7:56 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-18 16:13 [PATCH v2 00/21] arm64: Move overflow sp into SP_EL1 and kernel sp into SP_EL0 Will Deacon
2026-09-18 16:13 ` [PATCH v2 01/21] arm64: entry: Defer setting of TPIDRRO_EL0 until exit to userspace Will Deacon
2026-09-30 20:47 ` Linus Walleij
2026-09-18 16:13 ` [PATCH v2 02/21] arm64: entry: Only check for stack overflow on exceptions from EL1 Will Deacon
2026-09-30 20:50 ` Linus Walleij
2026-10-08 6:54 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 03/21] arm64: stackprotector: Temporarily disable per-task stackprotector Will Deacon
2026-09-30 21:01 ` Linus Walleij
2026-09-18 16:13 ` [PATCH v2 04/21] arm64: bpf: Add support for generating reads of TPIDRRO_EL0 Will Deacon
2026-09-30 20:53 ` Linus Walleij
2026-10-08 7:07 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 05/21] KVM: arm64: Protect TPIDRRO_EL0 across guest entry/exit Will Deacon
2026-09-30 20:55 ` Linus Walleij
2026-10-08 7:45 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 06/21] arm64: Store 'current' in TPIDRRO_EL0 instead of SP_EL0 Will Deacon
2026-09-30 20:58 ` Linus Walleij
2026-10-08 7:29 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 07/21] selftests/bpf: arm64: Use TPIDRRO_EL0 instead of SP_EL0 for 'current' Will Deacon
2026-09-30 20:58 ` Linus Walleij
2026-10-08 7:55 ` Jinjie Ruan [this message]
2026-09-18 16:13 ` [PATCH v2 08/21] scripts/gdb: " Will Deacon
2026-09-30 20:59 ` Linus Walleij
2026-10-08 7:56 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 09/21] arm64: stackprotector: Re-enable per-task stackprotector Will Deacon
2026-09-30 21:00 ` Linus Walleij
2026-10-08 7:58 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 10/21] arm64: percpu: Specialise set_my_cpu_offset() for the primary CPU Will Deacon
2026-09-30 21:02 ` Linus Walleij
2026-10-08 8:12 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 11/21] arm64: percpu: Annotate __kern_my_cpu_offset() as '__always_inline' Will Deacon
2026-09-30 21:05 ` Linus Walleij
2026-09-30 21:05 ` Linus Walleij
2026-10-08 8:14 ` Jinjie Ruan
2026-09-18 16:13 ` [PATCH v2 12/21] KVM: arm64: Preserve handler/thread bit of EL1 mode in __finalise_el2() Will Deacon
2026-09-18 16:13 ` [PATCH v2 13/21] arm64: sdei: Guard most of asm/sdei.h with CONFIG_ARM_SDE_INTERFACE Will Deacon
2026-09-18 16:13 ` [PATCH v2 14/21] arm64: sdei: Support SDEI events from kernel handler and thread modes Will Deacon
2026-09-18 16:13 ` [PATCH v2 15/21] arm64: entry: Point SP_EL0 at the overflow stack Will Deacon
2026-09-21 15:56 ` Catalin Marinas
2026-10-08 11:22 ` Jinjie Ruan
2026-09-18 16:14 ` [PATCH v2 16/21] arm64: entry: Implement EL1t exception handlers for " Will Deacon
2026-09-30 21:17 ` Linus Walleij
2026-10-08 11:47 ` Jinjie Ruan
2026-09-18 16:14 ` [PATCH v2 17/21] arm64: entry: Use SPSel to switch to " Will Deacon
2026-09-30 21:22 ` Linus Walleij
2026-10-08 11:59 ` Jinjie Ruan
2026-09-18 16:14 ` [PATCH v2 18/21] arm64: entry: Split up kernel_ventry macro into separate helper macros Will Deacon
2026-09-30 21:26 ` Linus Walleij
2026-10-08 8:53 ` Jinjie Ruan
2026-09-18 16:14 ` [PATCH v2 19/21] arm64: entry: The great stack switcheroo Will Deacon
2026-09-19 11:41 ` Bradley Morgan
2026-09-22 13:51 ` Catalin Marinas
2026-09-30 21:36 ` Linus Walleij
2026-10-01 7:27 ` Will Deacon
2026-10-01 8:38 ` Linus Walleij
2026-10-01 11:32 ` Will Deacon
2026-10-01 11:35 ` Linus Walleij
2026-09-18 16:14 ` [PATCH v2 20/21] arm64: tracing: Advertise a mode of EL1t in synthetic kernel regs Will Deacon
2026-09-22 14:00 ` Catalin Marinas
2026-09-18 16:14 ` [PATCH v2 21/21] arm64: Rename 'overflow_stack' and OVERFLOW_STACK_SIZE Will Deacon
2026-09-22 14:01 ` Catalin Marinas
2026-09-24 12:30 ` [PATCH v2 00/21] arm64: Move overflow sp into SP_EL1 and kernel sp into SP_EL0 Usama Anjum
2026-09-30 21:42 ` Linus Walleij
2026-10-01 7:21 ` Will Deacon
2026-10-01 9:00 ` Muhammad Usama Anjum
2026-10-01 21:19 ` Linus Walleij
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