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Message-ID: <ZlhtwDqFek7lP+9X@hpe.com>
Date: Thu, 30 May 2024 07:14:56 -0500
From: Dimitri Sivanich <sivanich@....com>
To: David Wang <00107082@....com>
Cc: Dimitri Sivanich <sivanich@....com>, kevin.tian@...el.com,
        baolu.lu@...ux.intel.com, jroedel@...e.de,
        linux-kernel@...r.kernel.org
Subject: Re: [Regression] 6.10-rc1: Fail to resurrect from suspend.

Hi David,

There is a fix to commit d74169ceb0, which I'll be posting shortly.  Hopefully
that will resolve your issue.

On Thu, May 30, 2024 at 08:01:10PM +0800, David Wang wrote:
> Hi,
> 
> My system fails to resurrect after `systemctl suspend` with 6.10-rc1,
> when pressing power button, the machine "sounds" starting(fans roaring),
> but my keyboard/mouse/monitor is not powered, and I have nothing to
> do but powering cycle the system.
> 
> I run a bisect session, and narrows it down to following commit:
> 
> 	commit d74169ceb0d2e32438946a2f1f9fc8c803304bd6
> 	Author: Dimitri Sivanich <sivanich@....com>
> 	Date:   Wed Apr 24 15:16:29 2024 +0800
> 
> 	    iommu/vt-d: Allocate DMAR fault interrupts locally
> 	    
> 	    The Intel IOMMU code currently tries to allocate all DMAR fault interrupt
> 	    vectors on the boot cpu.  On large systems with high DMAR counts this
> 	    results in vector exhaustion, and most of the vectors are not initially
> 	    allocated socket local.
> 	    
> 	    Instead, have a cpu on each node do the vector allocation for the DMARs on
> 	    that node.  The boot cpu still does the allocation for its node during its
> 	    boot sequence.
> 	    
> 	    Signed-off-by: Dimitri Sivanich <sivanich@....com>
> 	    Reviewed-by: Kevin Tian <kevin.tian@...el.com>
> 	    Link: https://lore.kernel.org/r/Zfydpp2Hm+as16TY@hpe.com
> 	    Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> 	    Signed-off-by: Joerg Roedel <jroedel@...e.de>
>  
> And I have confirmed that reverting this commit can fix my problem.
> 
> Following is my bisect logs:
> 	$ git bisect log
> 	git bisect start
> 	# status: waiting for both good and bad commits
> 	# good: [a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6] Linux 6.9
> 	git bisect good a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
> 	# status: waiting for bad commit, 1 good commit known
> 	# bad: [1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0] Linux 6.10-rc1
> 	git bisect bad 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
> 	# good: [db5d28c0bfe566908719bec8e25443aabecbb802] Merge tag 'drm-next-2024-05-15' of https://gitlab.freedesktop.org/drm/kernel 
> 	git bisect good db5d28c0bfe566908719bec8e25443aabecbb802
> 	# good: [db5d28c0bfe566908719bec8e25443aabecbb802] Merge tag 'drm-next-2024-05-15' of https://gitlab.freedesktop.org/drm/kernel 
> 	git bisect good db5d28c0bfe566908719bec8e25443aabecbb802
> 	# bad: [a90f1cd105c6c5c246f07ca371d873d35b78c7d9] Merge tag 'turbostat-for-Linux-6.10-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
> 	git bisect bad a90f1cd105c6c5c246f07ca371d873d35b78c7d9
> 	# good: [8b35a3bb33b57bc2cb2694a50e49e0ea01b9ff6f] Merge tag 'pmdomain-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
> 	git bisect good 8b35a3bb33b57bc2cb2694a50e49e0ea01b9ff6f
> 	# bad: [619b92b9c8fe5369503ae948ad4e0a9c195c2c4a] Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
> 	git bisect bad 619b92b9c8fe5369503ae948ad4e0a9c195c2c4a
> 	# good: [91b6163be404e36baea39fc978e4739fd0448ebd] Merge tag 'sysctl-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
> 	git bisect good 91b6163be404e36baea39fc978e4739fd0448ebd
> 	# bad: [0cc6f45cecb46cefe89c17ec816dc8cd58a2229a] Merge tag 'iommu-updates-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
> 	git bisect bad 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a
> 	# good: [89721e3038d181bacbd6be54354b513fdf1b4f10] Merge tag 'net-accept-more-20240515' of git://git.kernel.dk/linux
> 	git bisect good 89721e3038d181bacbd6be54354b513fdf1b4f10
> 	# good: [89721e3038d181bacbd6be54354b513fdf1b4f10] Merge tag 'net-accept-more-20240515' of git://git.kernel.dk/linux
> 	git bisect good 89721e3038d181bacbd6be54354b513fdf1b4f10
> 	# good: [de111f6b4f6a3010020825d22a068f416bc29c95] iommu/amd: Enable Guest Translation after reading IOMMU feature register
> 	git bisect good de111f6b4f6a3010020825d22a068f416bc29c95
> 	# good: [da55da5a42d4247d7a48b843fa5fcd9a4a10f4fe] iommu/arm-smmu-v3: Make the kunit into a module
> 	git bisect good da55da5a42d4247d7a48b843fa5fcd9a4a10f4fe
> 	# bad: [ba00196ca41c4f6d0b0d3c4a6748a133577abe05] iommu/vt-d: Decouple igfx_off from graphic identity mapping
> 	git bisect bad ba00196ca41c4f6d0b0d3c4a6748a133577abe05
> 	# bad: [446a68c58d2e5b8140d474f1a74082aebeee9bb0] iommu/vt-d: Add trace events for cache tag interface
> 	git bisect bad 446a68c58d2e5b8140d474f1a74082aebeee9bb0
> 	# bad: [cc9e49d35b4de47d6b656ac144cb22b11dc65c2e] iommu/vt-d: Remove debugfs use of private data field
> 	git bisect bad cc9e49d35b4de47d6b656ac144cb22b11dc65c2e
> 	# good: [9e7ee0f045395dc8aa55fbdc164c062484f4c88d] iommu/vt-d: Use try_cmpxchg64{,_local}() in iommu.c
> 	git bisect good 9e7ee0f045395dc8aa55fbdc164c062484f4c88d
> 	# bad: [d74169ceb0d2e32438946a2f1f9fc8c803304bd6] iommu/vt-d: Allocate DMAR fault interrupts locally
> 	git bisect bad d74169ceb0d2e32438946a2f1f9fc8c803304bd6
> 	# first bad commit: [d74169ceb0d2e32438946a2f1f9fc8c803304bd6] iommu/vt-d: Allocate DMAR fault interrupts locally
> 
> 
> FYI
> David

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