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Wed, 27 Mar 2024 15:23:17 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id wSkuAuU5BGbIfgAAn2gu4w (envelope-from ); Wed, 27 Mar 2024 15:23:17 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: efc82369-ec4d-11ee-a1ef-f123f15fe8a2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1711552997; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=svDhVGjKFzIPpcWjFYARn/2rWUfeidU+xfRiYlSjnX4=; b=hchFnFTpmvg2xILUuW8mlqB2nh83QyCO/EmARie/ZORSYtuJnBUo/zyJLY2HjVHqx09Elz aMaCJd0+9xLNObzCsolh41txPSQCTP0SXoMvzmysaK9xrz4NosL+/bITjscww81oqY4oMf 9BN6qdzi0893vEzcaiyNbLNQnCouXuQ= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1711552997; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=svDhVGjKFzIPpcWjFYARn/2rWUfeidU+xfRiYlSjnX4=; b=hchFnFTpmvg2xILUuW8mlqB2nh83QyCO/EmARie/ZORSYtuJnBUo/zyJLY2HjVHqx09Elz aMaCJd0+9xLNObzCsolh41txPSQCTP0SXoMvzmysaK9xrz4NosL+/bITjscww81oqY4oMf 9BN6qdzi0893vEzcaiyNbLNQnCouXuQ= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Andrew Cooper , George Dunlap , Jan Beulich , Julien Grall , Stefano Stabellini Subject: [PATCH v6 8/8] xen: allow up to 16383 cpus Date: Wed, 27 Mar 2024 16:22:29 +0100 Message-Id: <20240327152229.25847-9-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240327152229.25847-1-jgross@suse.com> References: <20240327152229.25847-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 3.70 X-Spamd-Result: default: False [3.70 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_SEVEN(0.00)[7]; MID_CONTAINS_FROM(1.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[] X-Spam-Level: *** Authentication-Results: smtp-out2.suse.de; none X-Spam-Flag: NO X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1711553012086100007 Content-Type: text/plain; charset="utf-8" With lock handling now allowing up to 16384 cpus (spinlocks can handle 65535 cpus, rwlocks can handle 16384 cpus), raise the allowed limit for the number of cpus to be configured to 16383. The new limit is imposed by IOMMU_CMD_BUFFER_MAX_ENTRIES and QINVAL_MAX_ENTRY_NR required to be larger than 2 * CONFIG_NR_CPUS. Signed-off-by: Juergen Gross Acked-by: Jan Beulich --- V5: - new patch (Jan Beulich) --- xen/arch/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig index 67ba38f32f..308ce129a8 100644 --- a/xen/arch/Kconfig +++ b/xen/arch/Kconfig @@ -6,7 +6,7 @@ config PHYS_ADDR_T_32 =20 config NR_CPUS int "Maximum number of CPUs" - range 1 4095 + range 1 16383 default "256" if X86 default "8" if ARM && RCAR3 default "4" if ARM && QEMU --=20 2.35.3