linux-kernel - [PATCH] MIPS: generic: enable SMP on SMVP systems

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 17 Dec 2021 19:39:30 +0100
From:   Sander Vanheule <sander@...nheule.net>
To:     linux-mips@...r.kernel.org
Cc:     Paul Burton <paulburton@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-kernel@...r.kernel.org,
        Sander Vanheule <sander@...nheule.net>,
        INAGAKI Hiroshi <musashino.open@...il.com>
Subject: [PATCH] MIPS: generic: enable SMP on SMVP systems

In addition to CPS SMP setups, also try to initialise MT SMP setups with
multiple VPEs per CPU core. CMP SMP support is not provided as it is
considered deprecated.

Additionally, rework the code by dropping the err variable and make it
similar to how other platforms perform this initialisation.

Co-developed-by: INAGAKI Hiroshi <musashino.open@...il.com>
Signed-off-by: INAGAKI Hiroshi <musashino.open@...il.com>
Signed-off-by: Sander Vanheule <sander@...nheule.net>
---
 arch/mips/generic/init.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c
index 1842cddd8356..1d712eac1617 100644
--- a/arch/mips/generic/init.c
+++ b/arch/mips/generic/init.c
@@ -110,14 +110,15 @@ void __init plat_mem_setup(void)
 
 void __init device_tree_init(void)
 {
-	int err;
-
 	unflatten_and_copy_device_tree();
 	mips_cpc_probe();
 
-	err = register_cps_smp_ops();
-	if (err)
-		err = register_up_smp_ops();
+	if (!register_cps_smp_ops())
+		return;
+	if (!register_vsmp_smp_ops())
+		return;
+
+	register_up_smp_ops();
 }
 
 int __init apply_mips_fdt_fixups(void *fdt_out, size_t fdt_out_size,
-- 
2.33.1