linux-kernel - [PATCH v2 0/2] xen/swiotlb: two fixes

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Message-ID: <20250213085538.17060-1-jgross@suse.com>
Date: Thu, 13 Feb 2025 09:55:36 +0100
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev,
	x86@...nel.org
Cc: Juergen Gross <jgross@...e.com>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
	xen-devel@...ts.xenproject.org,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH v2 0/2] xen/swiotlb: two fixes

Patch 1 removes an unneeded alignment requirement, which resulted in
exhausting the SWIOTLB with normal use cases.

Patch 2 allows to allocate larger continuous regions by reallocating
the frame list if needed.

Changes in V2:
- drop former patch 2 for now in order to avoid more lengthy discussion
- new patch 2

Juergen Gross (2):
  xen/swiotlb: relax alignment requirements
  x86/xen: allow larger contiguous memory regions in PV guests

 arch/x86/xen/mmu_pv.c     | 71 ++++++++++++++++++++++++++++++++++-----
 drivers/xen/swiotlb-xen.c | 20 ++++++-----
 2 files changed, 74 insertions(+), 17 deletions(-)

-- 
2.43.0