From nobody Mon Feb 9 13:01:34 2026 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19873261B8F for ; Mon, 6 Oct 2025 07:47:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759736822; cv=none; b=FNAUljJzh2z+dFIidYUbzgbcgjsrQZcrgYiuV6MkBPC0i7TuqL29wNVWbnViMPCOCtJgVzv16HbW4wfCT5V0t2ZCchjgcEb6qGFDUfiiYNDHCmY6qjqYHwR18aDYp/Y6bV+7kenkmBlfOtxwJgtNU6ELg0MrtOw4qYhk6Bs5GW8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759736822; c=relaxed/simple; bh=iPJJu9/xmQLRYwvCeLoXFJ0AbyvghjGCkXNEiSZIKG8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=N47We3rlHBFg6e5ADftBlbKx2b8No7+ukM5RhTmn/w460UjMK47dlnsxa1kMi3h2f1NQryjHEnR1wM20uqWn/mLEPfj505qg5HXbnZUlvsd5RjnxbMBIdNwdVOECRx3S1XYmaEubpTA5MAHq7kIx+qSRvaHpomR6LyuoiI4lhRg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=dUSWILCb; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=dUSWILCb; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="dUSWILCb"; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="dUSWILCb" Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 6C863336CB; Mon, 6 Oct 2025 07:46:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1759736819; 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=MEgql2RjEPQnq4TcSo4Zcz1aExil9ZMRbcIeSUjJfSw=; b=dUSWILCbmnhDvjv2DL0mrY5ZrOQheiaiybkv6wfxWLMF6rMTb0AU3TZrcpSnNlllSOqyst amRFMI15CjRY+T451KOh0DAXZWPxWXfx3dTMwx2qjfd+7nz4+cV5beFAhxvrRJ3XTaWVrq 2+xRFIRNa7tr18D35nKuVyIfGyychkk= Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1759736819; 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=MEgql2RjEPQnq4TcSo4Zcz1aExil9ZMRbcIeSUjJfSw=; b=dUSWILCbmnhDvjv2DL0mrY5ZrOQheiaiybkv6wfxWLMF6rMTb0AU3TZrcpSnNlllSOqyst amRFMI15CjRY+T451KOh0DAXZWPxWXfx3dTMwx2qjfd+7nz4+cV5beFAhxvrRJ3XTaWVrq 2+xRFIRNa7tr18D35nKuVyIfGyychkk= Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 05CB613A7E; Mon, 6 Oct 2025 07:46:58 +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 hj5dO/Jz42huHgAAD6G6ig (envelope-from ); Mon, 06 Oct 2025 07:46:58 +0000 From: Juergen Gross To: linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, x86@kernel.org Cc: Juergen Gross , Catalin Marinas , Will Deacon , Ajay Kaher , Alexey Makhalov , Broadcom internal kernel review list , linux-arm-kernel@lists.infradead.org, "Peter Zijlstra (Intel)" Subject: [PATCH v3 08/21] arm64/paravirt: Use common code for paravirt_steal_clock() Date: Mon, 6 Oct 2025 09:45:53 +0200 Message-ID: <20251006074606.1266-9-jgross@suse.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251006074606.1266-1-jgross@suse.com> References: <20251006074606.1266-1-jgross@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Level: X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCPT_COUNT_SEVEN(0.00)[11]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; URIBL_BLOCKED(0.00)[suse.com:email,suse.com:mid,infradead.org:email,imap1.dmz-prg2.suse.org:helo]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,infradead.org:email,suse.com:email,suse.com:mid]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -2.80 Content-Type: text/plain; charset="utf-8" Remove the arch specific variant of paravirt_steal_clock() and use the common one instead. Signed-off-by: Juergen Gross Acked-by: Peter Zijlstra (Intel) --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/paravirt.h | 10 ---------- arch/arm64/kernel/paravirt.c | 7 ------- 3 files changed, 1 insertion(+), 17 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6663ffd23f25..3a463027538e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1560,6 +1560,7 @@ config CC_HAVE_SHADOW_CALL_STACK =20 config PARAVIRT bool "Enable paravirtualization code" + select HAVE_PV_STEAL_CLOCK_GEN help This changes the kernel so it can modify itself when it is run under a hypervisor, potentially improving performance significantly diff --git a/arch/arm64/include/asm/paravirt.h b/arch/arm64/include/asm/par= avirt.h index c9f7590baacb..cb037e742372 100644 --- a/arch/arm64/include/asm/paravirt.h +++ b/arch/arm64/include/asm/paravirt.h @@ -3,16 +3,6 @@ #define _ASM_ARM64_PARAVIRT_H =20 #ifdef CONFIG_PARAVIRT -#include - -u64 dummy_steal_clock(int cpu); - -DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock); - -static inline u64 paravirt_steal_clock(int cpu) -{ - return static_call(pv_steal_clock)(cpu); -} =20 int __init pv_time_init(void); =20 diff --git a/arch/arm64/kernel/paravirt.c b/arch/arm64/kernel/paravirt.c index 943b60ce12f4..572efb96b23f 100644 --- a/arch/arm64/kernel/paravirt.c +++ b/arch/arm64/kernel/paravirt.c @@ -25,13 +25,6 @@ #include #include =20 -static u64 native_steal_clock(int cpu) -{ - return 0; -} - -DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock); - struct pv_time_stolen_time_region { struct pvclock_vcpu_stolen_time __rcu *kaddr; }; --=20 2.51.0