From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, iommu@lists.linux.dev, x86@kernel.org
Cc: Juergen Gross <jgross@suse.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,
xen-devel@lists.xenproject.org,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
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: [PATCH 0/2] xen/swiotlb: one fix and one optimization
Date: Tue, 11 Feb 2025 13:04:30 +0100 [thread overview]
Message-ID: <20250211120432.29493-1-jgross@suse.com> (raw)
Patch 1 removes an unneeded alignment requirement, which resulted in
exhausting the SWIOTLB with normal use cases.
Patch 2 is an optimization to avoid destroying a contiguous region
without any need to do so.
There will be probably another patch following to allow larger
contiguous regions to be created, but this one isn't ready yet.
Juergen Gross (2):
xen/swiotlb: relax alignment requirements
xen/swiotlb: don't destroy contiguous region in all cases
arch/x86/include/asm/xen/swiotlb-xen.h | 5 +++--
arch/x86/xen/mmu_pv.c | 18 ++++++++++-----
drivers/xen/swiotlb-xen.c | 31 ++++++++++++++++----------
3 files changed, 34 insertions(+), 20 deletions(-)
--
2.43.0
next reply other threads:[~2025-02-11 12:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-11 12:04 Juergen Gross [this message]
2025-02-11 12:04 ` [PATCH 1/2] xen/swiotlb: relax alignment requirements Juergen Gross
2025-02-12 1:23 ` Stefano Stabellini
2025-02-12 6:53 ` Jan Beulich
2025-02-12 11:04 ` Jürgen Groß
2025-02-11 12:04 ` [PATCH 2/2] xen/swiotlb: don't destroy contiguous region in all cases Juergen Gross
2025-02-12 1:30 ` Stefano Stabellini
2025-02-12 11:15 ` Jürgen Groß
2025-02-12 21:14 ` Stefano Stabellini
2025-02-12 7:38 ` Jan Beulich
2025-02-12 11:11 ` Jürgen Groß
2025-02-12 11:49 ` Jan Beulich
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