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From: Karsten Desler <kdesler@soohrt.org>
To: "Oscar Salvador \(SUSE\)" <osalvador@kernel.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [REGRESSION] x86/hugetlb: AMD F15h VA alignment offset breaks MAP_HUGETLB alignment
Date: Wed, 27 May 2026 22:39:26 +0200	[thread overview]
Message-ID: <20260527203926.GP31091@soohrt.org> (raw)
In-Reply-To: <ahc31AChKqnfItHW@localhost.localdomain>

* Oscar Salvador (SUSE) wrote:
> Maybe this? Can you give it a shot?

Thanks, applied and tested across 5 reboots.
All mmaps return properly aligned hugepages, don't cause kernelBUGs
on exit and show the expected munmap behavior.

mmap(NULL, 1229824, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_POPULATE|MAP_HUGETLB, -1, 0) = 0x7f7e49a00000
munmap(0x7f7e49a00000, 1229824)         = -1 EINVAL (Invalid argument)
munmap(0x7f7e49a00000, 2097152)         = 0

Best regards,
 Karsten


  reply	other threads:[~2026-05-27 20:39 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-27 14:36 [REGRESSION] x86/hugetlb: AMD F15h VA alignment offset breaks MAP_HUGETLB alignment Karsten Desler
2026-05-27 15:53 ` Oscar Salvador (SUSE)
2026-05-27 18:28   ` Oscar Salvador (SUSE)
2026-05-27 20:39     ` Karsten Desler [this message]
2026-05-27 21:04     ` Dave Hansen
2026-05-28  5:45       ` Oscar Salvador (SUSE)
2026-05-28 12:45         ` Oscar Salvador (SUSE)
2026-05-28 14:03           ` Oscar Salvador (SUSE)
2026-05-28 15:31             ` Borislav Petkov
2026-05-28 18:29               ` Oscar Salvador (SUSE)

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