From: Magnus Lindholm <linmag7@gmail.com>
To: richard.henderson@linaro.org, mattst88@gmail.com,
linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org
Cc: linmag7@gmail.com
Subject: [PATCH v2 1/2] alpha: parse early parameters before reserving contiguous memory
Date: Sat, 14 Nov 2026 10:53:16 +0100 [thread overview]
Message-ID: <20261114095335.1283016-2-linmag7@gmail.com> (raw)
In-Reply-To: <20261114095335.1283016-1-linmag7@gmail.com>
Run parse_early_param() in setup_arch(), after machine initialization
and before further memory reservations. This lets the subsequent CMA
reservation honor cma= before start_kernel() reaches its normal call.
The parser uses boot_command_line and guards against repeated calls.
This moves all early parameter handlers, not just the CMA handler.
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
---
arch/alpha/kernel/setup.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 9fda01b73b18..c7b7ebcc47b6 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -579,6 +579,9 @@ setup_arch(char **cmdline_p)
if (alpha_mv.init_arch)
alpha_mv.init_arch();
+ /* Parse early options before reserving memory for DMA CMA. */
+ parse_early_param();
+
/* Reserve standard resources. */
reserve_std_resources();
--
2.43.0
next prev parent reply other threads:[~2026-11-14 9:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-14 9:53 [PATCH v2 0/2] alpha: enable DMA CMA support Magnus Lindholm
2026-11-14 9:53 ` Magnus Lindholm [this message]
2026-11-14 9:53 ` [PATCH v2 2/2] alpha: enable contiguous memory allocation for coherent DMA Magnus Lindholm
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