From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7BF63521216 for ; Mon, 7 Sep 2026 16:44:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788799449; cv=none; b=NfRteHuQYoO25/XQ+qf+Ywn14+VnSyyb6PHK3BZGi1KT2xcTl3YgLecOe6OdAaq3FdULMu9bJz5+qlX/p4YMR8YmSd24Otn6ZKC+c8Zd7jws/GOk+C6riYoegKlmqTW6zUiCsdU2/S5HvgmwhwLuAaGLf7uxELblUjQuFhVlJ20= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788799449; c=relaxed/simple; bh=5w+w9N7qo/Kr9St2C3GcFvaWy+IiY4pdFryRAKuO59s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nAiobTQ/GU9UtBbNGHMLl5E6s3IckSQr6c5g2IkNtc0/yDe6vKGEQb4Cf/8xhWNNCzTnWAVAiz+PfzggdBiDTxXKEKD+QoWqGbQLatLNkein1VSDXzczFFhuf55teCWGJyzKJXKlNEL0oufEyExOZnifRVMd0kF6c0TlKZOzFuA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AV+pENzp; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AV+pENzp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8816F1F00A3A; Mon, 7 Sep 2026 16:44:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788799448; bh=3E+XhQ30UlSW21cfmh1kLGlFL8sP6bIE+ExxMayVkkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=AV+pENzpNe27jKIRoaSpGRhj+K6DyKrFuqwdK17SPFXT/5AnsIBfBSBdwOfMzKxpc fusF7opzvBzOf7cEAO6mmO7nv5qm4yVYIEcgBdRBcjlL31LxlCCQpO0WsjYxFTg13+ lVmir353ArSW6V665gZcFE65Gk3hwLNY+jUcI5V/6CsMsrd4+o9PmeowL3qS17szVs /Lxe197LqGIm0k6NR0uwjgf7XBhAoBlUoAoJZP98KSunln7jRO/oO3NtbJ/AN6HSf9 x1eGknKxlfOcI0XbD87xwF5z5nnEdEFNmeHbZyMYLYckUfcINTLyIZb1UYb0nhsJ37 hY9RTEhQGMqtg== From: Will Deacon To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Will Deacon , Arnd Bergmann , Ard Biesheuvel , Ada Couprie Diaz , David Hildenbrand , Catalin Marinas , Vladimir Murzin , Mark Rutland , Mostafa Saleh , Lorenzo Stoakes , Oliver Upton , Linus Walleij , Marc Zyngier Subject: [PATCH 20/21] arm64: tracing: Advertise a mode of EL1t in synthetic kernel regs Date: Mon, 7 Sep 2026 17:42:45 +0100 Message-ID: <20260907164247.17223-21-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260907164247.17223-1-will@kernel.org> References: <20260907164247.17223-1-will@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When synthesising a kernel regs structure for ftrace or perf, advertise a mode of EL1t to reflect the mode in which the kernel runs for the vast majority of the time. Signed-off-by: Will Deacon --- arch/arm64/include/asm/ftrace.h | 4 ++-- arch/arm64/include/asm/perf_event.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/ftrace.h b/arch/arm64/include/asm/ftrace.h index 1621c84f44b3..d55a019cdf0a 100644 --- a/arch/arm64/include/asm/ftrace.h +++ b/arch/arm64/include/asm/ftrace.h @@ -153,7 +153,7 @@ ftrace_partial_regs(const struct ftrace_regs *fregs, struct pt_regs *regs) regs->pc = afregs->pc; regs->regs[29] = afregs->fp; regs->regs[30] = afregs->lr; - regs->pstate = PSR_MODE_EL1h; + regs->pstate = PSR_MODE_EL1t; return regs; } @@ -161,7 +161,7 @@ ftrace_partial_regs(const struct ftrace_regs *fregs, struct pt_regs *regs) (_regs)->pc = arch_ftrace_regs(fregs)->pc; \ (_regs)->regs[29] = arch_ftrace_regs(fregs)->fp; \ (_regs)->sp = arch_ftrace_regs(fregs)->sp; \ - (_regs)->pstate = PSR_MODE_EL1h; \ + (_regs)->pstate = PSR_MODE_EL1t; \ } while (0) int ftrace_regs_query_register_offset(const char *name); diff --git a/arch/arm64/include/asm/perf_event.h b/arch/arm64/include/asm/perf_event.h index ee45b4e77347..b3e7c24a5aab 100644 --- a/arch/arm64/include/asm/perf_event.h +++ b/arch/arm64/include/asm/perf_event.h @@ -17,7 +17,7 @@ (regs)->pc = (__ip); \ (regs)->regs[29] = (unsigned long) __builtin_frame_address(0); \ (regs)->sp = current_stack_pointer; \ - (regs)->pstate = PSR_MODE_EL1h; \ + (regs)->pstate = PSR_MODE_EL1t; \ } #endif -- 2.55.0.979.g7e5102b832-goog