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Peter Anvin" Subject: [PATCH v2 0/2] xen/swiotlb: two fixes Date: Thu, 13 Feb 2025 09:55:36 +0100 Message-ID: <20250213085538.17060-1-jgross@suse.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 3B4A52295F X-Spam-Level: X-Spamd-Result: default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_TWELVE(0.00)[13]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; TO_DN_SOME(0.00)[]; DKIM_TRACE(0.00)[suse.com:+] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Score: -3.01 X-Spam-Flag: NO 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