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Message-ID: <20240906111841.562402-2-bigeasy@linutronix.de> Date: Fri, 6 Sep 2024 12:59:04 +0200 From: Sebastian Andrzej Siewior <bigeasy@...utronix.de> To: Thomas Gleixner <tglx@...utronix.de>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, x86@...nel.org Cc: "H. Peter Anvin" <hpa@...or.com>, Albert Ou <aou@...s.berkeley.edu>, Borislav Petkov <bp@...en8.de>, Catalin Marinas <catalin.marinas@....com>, Clark Williams <williams@...hat.com>, Dave Hansen <dave.hansen@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>, John Ogness <john.ogness@...utronix.de>, Palmer Dabbelt <palmer@...belt.com>, Paul Walmsley <paul.walmsley@...ive.com>, Petr Mladek <pmladek@...e.com>, Sergey Senozhatsky <senozhatsky@...omium.org>, Steven Rostedt <rostedt@...dmis.org>, Will Deacon <will@...nel.org>, Sebastian Andrzej Siewior <bigeasy@...utronix.de> Subject: [PATCH 1/3] x86: Allow to enable PREEMPT_RT. It is really time. x86 has all the required architecture related changes, that have been identified over time, in order to enable PREEMPT_RT. With the recent printk changes, the last known road block has been addressed. Allow to enable PREEMPT_RT on x86. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 28401c16b0c3f..a8cf61c52b063 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -125,6 +125,7 @@ config X86 select ARCH_USES_CFI_TRAPS if X86_64 && CFI_CLANG select ARCH_SUPPORTS_LTO_CLANG select ARCH_SUPPORTS_LTO_CLANG_THIN + select ARCH_SUPPORTS_RT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF if X86_CMPXCHG64 select ARCH_USE_MEMTEST -- 2.45.2
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