linux-kernel - [PATCH 6/8] MIPS: Limit MIPS_MT

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Date: Fri, 02 Feb 2024 18:21:45 +0000
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <ndesaulniers@...gle.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, 
 llvm@...ts.linux.dev, Jiaxun Yang <jiaxun.yang@...goat.com>, 
 Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 6/8] MIPS: Limit MIPS_MT_SMP support by ISA reversion

MIPS MT ASE is only available on ISA between Release 1 and Release 5.
Add ISA level dependency to Kconfig to fix build.

Reported-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
v0: https://lore.kernel.org/all/20230414080701.15503-8-jiaxun.yang@flygoat.com/
---
 arch/mips/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 797ae590ebdb..c44358a6d93e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2171,7 +2171,8 @@ config CPU_R4K_CACHE_TLB
 config MIPS_MT_SMP
 	bool "MIPS MT SMP support (1 TC on each available VPE)"
 	default y
-	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
+	depends on TARGET_ISA_REV > 0 && TARGET_ISA_REV < 6
+	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MICROMIPS
 	select CPU_MIPSR2_IRQ_VI
 	select CPU_MIPSR2_IRQ_EI
 	select SYNC_R4K

-- 
2.43.0