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From: Heiko Stuebner <heiko@sntech.de>
To: palmer@dabbelt.com, paul.walmsley@sifive.com, aou@eecs.berkeley.edu
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	wefu@redhat.com, liush@allwinnertech.com, guoren@kernel.org,
	atishp@atishpatra.org, anup@brainfault.org, drew@beagleboard.org,
	hch@lst.de, arnd@arndb.de, wens@csie.org, maxime@cerno.tech,
	gfavor@ventanamicro.com, andrea.mondelli@huawei.com,
	behrensj@mit.edu, xinhaoqu@huawei.com, mick@ics.forth.gr,
	allen.baum@esperantotech.com, jscheid@ventanamicro.com,
	rtrauben@gmail.com, samuel@sholland.org, cmuellner@linux.com,
	philipp.tomsich@vrull.eu, Heiko Stuebner <heiko@sntech.de>
Subject: [PATCH v8 08/14] riscv: move boot alternatives to after fill_hwcap
Date: Thu, 24 Mar 2022 01:07:04 +0100	[thread overview]
Message-ID: <20220324000710.575331-9-heiko@sntech.de> (raw)
In-Reply-To: <20220324000710.575331-1-heiko@sntech.de>

Move the application of boot alternatives to after the hw-capabilities
are populated. This allows to check for available extensions when
determining which alternatives to apply and also makes it actually
work if CONFIG_SMP is disabled for whatever reason.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 arch/riscv/kernel/setup.c   | 2 ++
 arch/riscv/kernel/smpboot.c | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 339ceb595b38..b4879c942b42 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -21,6 +21,7 @@
 #include <linux/efi.h>
 #include <linux/crash_dump.h>
 
+#include <asm/alternative.h>
 #include <asm/cpu_ops.h>
 #include <asm/early_ioremap.h>
 #include <asm/pgtable.h>
@@ -295,6 +296,7 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
 	riscv_fill_hwcap();
+	apply_boot_alternatives();
 }
 
 static int __init topology_init(void)
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index a6d13dca1403..f1e4948a4b52 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -32,7 +32,6 @@
 #include <asm/sections.h>
 #include <asm/sbi.h>
 #include <asm/smp.h>
-#include <asm/alternative.h>
 
 #include "head.h"
 
@@ -41,7 +40,6 @@ static DECLARE_COMPLETION(cpu_running);
 void __init smp_prepare_boot_cpu(void)
 {
 	init_cpu_topology();
-	apply_boot_alternatives();
 }
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
-- 
2.35.1


  parent reply	other threads:[~2022-03-24  0:08 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-24  0:06 [PATCH v8 00/14] riscv: support for Svpbmt and D1 memory types Heiko Stuebner
2022-03-24  0:06 ` [PATCH v8 01/14] riscv: prevent null-pointer dereference with sbi_remote_fence_i Heiko Stuebner
2022-03-31  9:51   ` Christoph Hellwig
2022-03-31 12:28     ` Heiko Stübner
2022-03-31 12:33       ` Christoph Hellwig
2022-04-07 18:50         ` Heiko Stübner
2022-03-24  0:06 ` [PATCH v8 02/14] riscv: integrate alternatives better into the main architecture Heiko Stuebner
2022-03-31  9:53   ` Christoph Hellwig
2022-03-24  0:06 ` [PATCH v8 03/14] riscv: allow different stages with alternatives Heiko Stuebner
2022-03-24  0:07 ` [PATCH v8 04/14] riscv: implement module alternatives Heiko Stuebner
2022-03-24  0:07 ` [PATCH v8 05/14] riscv: implement ALTERNATIVE_2 macro Heiko Stuebner
2022-03-31  9:56   ` Christoph Hellwig
2022-03-24  0:07 ` [PATCH v8 06/14] riscv: extend concatenated alternatives-lines to the same length Heiko Stuebner
2022-03-24  0:07 ` [PATCH v8 07/14] riscv: prevent compressed instructions in alternatives Heiko Stuebner
2022-03-31  9:56   ` Christoph Hellwig
2022-03-24  0:07 ` Heiko Stuebner [this message]
2022-03-31  9:57   ` [PATCH v8 08/14] riscv: move boot alternatives to after fill_hwcap Christoph Hellwig
2022-03-24  0:07 ` [PATCH v8 09/14] riscv: Fix accessing pfn bits in PTEs for non-32bit variants Heiko Stuebner
2022-03-31  9:59   ` Christoph Hellwig
2022-03-24  0:07 ` [PATCH v8 10/14] riscv: add cpufeature handling via alternatives Heiko Stuebner
2022-03-31 10:01   ` Christoph Hellwig
2022-04-08 16:13     ` Heiko Stübner
2022-03-24  0:07 ` [PATCH v8 11/14] riscv: add RISC-V Svpbmt extension support Heiko Stuebner
2022-03-31 10:03   ` Christoph Hellwig
2022-03-31 12:19     ` Heiko Stübner
2022-03-31 12:27       ` Christoph Hellwig
2022-03-31 12:29   ` Christoph Hellwig
2022-03-24  0:07 ` [PATCH v8 12/14] riscv: remove FIXMAP_PAGE_IO and fall back to its default value Heiko Stuebner
2022-03-31 10:03   ` Christoph Hellwig
2022-03-24  0:07 ` [PATCH v8 13/14] riscv: don't use global static vars to store alternative data Heiko Stuebner
2022-03-24  0:07 ` [PATCH v8 14/14] riscv: add memory-type errata for T-Head Heiko Stuebner
2022-03-31  2:24 ` [PATCH v8 00/14] riscv: support for Svpbmt and D1 memory types Palmer Dabbelt

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