Re: [REGRESSION] Power9 pseries boot hang in v7.2-rc6, narrowed to PowerPC GENERIC_ENTRY conversion window
From: Venkat Rao Bagalkote <hidden>
Date: 2026-08-12 05:16:59
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Hello Mukesh, On 11/08/26 6:16 pm, Mukesh Kumar Chaurasiya wrote:
On Tue, Aug 11, 2026 at 11:37:45AM +0530, Mukesh Kumar Chaurasiya wrote:quoted
On Mon, Aug 10, 2026 at 05:19:27PM +0530, Venkat Rao Bagalkote wrote:quoted
Hi Shrikanth, On 04/08/26 8:23 pm, Shrikanth Hegde wrote:quoted
Hi Venkat. On 8/4/26 2:04 PM, Venkat Rao Bagalkote wrote:quoted
Hi, I'm seeing a boot regression on a Power9 pseries LPAR. The system hangs very early during boot after: Quiescing Open Firmware ... Booting Linux via __start() ...That is strange. not sure where to look at without any logs. Is it a specific config that fails or this specific LPAR that fails?Is this a specific lpar or all power9 pseries are exhibiting same behaviour?
Its specific to a lpar.
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Regards, Mukesh [...]Hey Venkat, Can you try the below fix?diff --git a/arch/powerpc/include/asm/entry-common.h b/arch/powerpc/include/asm/entry-common.h index c5adb5006361..de64389b0815 100644 --- a/arch/powerpc/include/asm/entry-common.h +++ b/arch/powerpc/include/asm/entry-common.h@@ -270,7 +270,7 @@ static inline void arch_interrupt_exit_prepare(struct pt_regs *regs) } /* irqentry_exit expects to be called with interrupts disabled */ - local_irq_disable(); + hard_irq_disable(); } static inline void arch_interrupt_async_enter_prepare(struct pt_regs *regs)
I tired this fix, but issue still persists. Regards, Venkat.