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Thu, 14 Mar 2024 07:21:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 6SIlBoql8mWXDgAAD6G6ig (envelope-from ); Thu, 14 Mar 2024 07:21:46 +0000 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: 84170f40-e1d3-11ee-afdd-a90da7624cb6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1710400906; 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=EkBnLKOBMPSiT+mLfvH5diIs5oNZa3ZYrVL2mqE0YS3a3slf6xVaQ1xNZbcKaPWCXxlsId saQdPEEfqZF0QIsteoa/J3SfuX2vLdA99ZEWn4uun0ngYCOJjlesSCZY3akhpEmeiPfPqf CBS9SfE5xRbTmX3zGkjFY4/M9SIZ0JY= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1710400906; 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=EkBnLKOBMPSiT+mLfvH5diIs5oNZa3ZYrVL2mqE0YS3a3slf6xVaQ1xNZbcKaPWCXxlsId saQdPEEfqZF0QIsteoa/J3SfuX2vLdA99ZEWn4uun0ngYCOJjlesSCZY3akhpEmeiPfPqf CBS9SfE5xRbTmX3zGkjFY4/M9SIZ0JY= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Andrew Cooper , George Dunlap , Jan Beulich , Julien Grall , Stefano Stabellini , Wei Liu Subject: [PATCH v5 13/13] xen: allow up to 16383 cpus Date: Thu, 14 Mar 2024 08:20:29 +0100 Message-Id: <20240314072029.16937-14-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240314072029.16937-1-jgross@suse.com> References: <20240314072029.16937-1-jgross@suse.com> MIME-Version: 1.0 Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [4.90 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; URIBL_BLOCKED(0.00)[suse.com:email]; 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)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; RCPT_COUNT_SEVEN(0.00)[8]; MID_CONTAINS_FROM(1.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[] 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 --- 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 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