From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f73.google.com (mail-ed1-f73.google.com [209.85.208.73]) (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 8BA6B367B6F for ; Mon, 22 Jun 2026 10:33:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782124432; cv=none; b=S5QWFWxRgLtCSWkqZvZuPZfUQQVfuO/kNSiQtzBaeCAQ6lWpmNKPM+YqP/IavzhkhdxjEYVTIF5qmqCTSiHbSZCO8zHOCef85eT7xi5Vv1ZtT9YUynCaIZCq9REW1Ba/yOcv0T+y2TZMhqMNLbnVI3xXyQ9M2oaCVwvN8cYesBg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782124432; c=relaxed/simple; bh=Z/WV+6eQJTf7mvvJFSfzxR+KQCT22p+05SG+LQgnOP4=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=ou6fxx8BvzUN9kzJztR0ecZUnh/xWkG2CBxylsQzYSd45TzZ/5NzuMso4JvZJPUJKLPoefpdeSCOBl1BR/MOwZBZlbbSjatSyU+Bjh1aJMUCbuWnjC8U6ijiZyFcDYfwbdO6qm0Oxu68z9lRIPIk5MLpx7ZYl0qxQE0nKaDWOVQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=We0PsTJW; arc=none smtp.client-ip=209.85.208.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="We0PsTJW" Received: by mail-ed1-f73.google.com with SMTP id 4fb4d7f45d1cf-697bd22237dso611705a12.2 for ; Mon, 22 Jun 2026 03:33:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782124430; x=1782729230; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=W0tMHlxfhNRj9OWJ2aLcf95z6Lv7ns1VwKEy9Zm5rfk=; b=We0PsTJWOT4d037FQTRGjpJ0EcS6ljJ4UxZk1ZzwCbqFZTSPx/7kBPyA51/VfEIRvH Umam83fR9oeKM7KTEfGv0RimbC9x50uXCy900WRKFgbWBigANYh2NV2jRblcE7jzaMJW Qv+BJiCa74HLUE8zf1CjlhHz4flp2ltyFe/lHQl5i4CkrCoRG5ZPT7skxB+WCTjg8TTf vFPxvqTvPjPd3mP+lJ2Xs7gzpduTPFvAxvQ6N+Sz8kpemY5BCGOiD+QayQs+Vv4Pq5ut is6QOX2HhzMKEZDDk4xPLOno8/ju2ocaRYzTkvnuqZZ+bbyamJt2o8c0v5qrCmp4RC5x Lksg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782124430; x=1782729230; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=W0tMHlxfhNRj9OWJ2aLcf95z6Lv7ns1VwKEy9Zm5rfk=; b=OpqyPo+HWoa5pQVhpkGTpOQi3VOt6lKnOMmZcpqzqtUDOTtROOHBfS0U0CEKc+RH3k asEQTuRnpBwNCKSK/yuFiIKQ921yONub3SHuhQNww/RqmZzfr/9RaCpxlIvMdjFlRvKe n7QB6oNDY9vcdM6X+I3VFLTv/cj/v2wYCddm9yAGXRE873ZSXf87W0vhM3yxioKpJgPG t+IEu+ndqwXWXQA0p4KpIvzqwIa2+6wd9be+z7WTBqZ5EtVX75VCV4nzWkaGgY8tcQpd K7grnlap3DRxxf/JHXxbJQscovER95tGu3cjU2xx/p71OEU5OaAqPP9MN748szIyXrxB 0LLQ== X-Forwarded-Encrypted: i=1; AFNElJ8LweYXnnrNjCBQjphp3ebFqtaOFy23FyfWmrz7jSQoqDhh42ebg6UTvR25nx35uMTov+O/1JjVWLTFJoo=@vger.kernel.org X-Gm-Message-State: AOJu0Yzq/giuDtB4qx6HWX6lo2SYlOtiyg0kxAV1pOi/P/jvEnPr36nM NEryNovQYAKI7H7WlM5NUyxT+y27Q0xzfGhVLWhtygo2eltmM0m3hPw1chhcImsSZhUjsMO/qOk K7ODcv7Y5ux0VPwR+Nw== X-Received: from ejcci24.prod.google.com ([2002:a17:907:2678:b0:bfa:ef9f:483c]) (user=tarunsahu job=prod-delivery.src-stubby-dispatcher) by 2002:a17:907:c13:b0:bee:e07:3f0e with SMTP id a640c23a62f3a-c0b601ea898mr640255266b.2.1782124428817; Mon, 22 Jun 2026 03:33:48 -0700 (PDT) Date: Mon, 22 Jun 2026 10:33:44 +0000 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.55.0.rc0.738.g0c8ab3ebcc-goog Message-ID: <85fb8f5a308203c4cb352189c6eb65b44c03bc49.1781866575.git.tarunsahu@google.com> Subject: [PATCH v3 1/2] kho: add KHOSER_COPY_TYPE(UN)SAFE for phys copy From: Tarun Sahu To: Mike Rapoport , Alexander Graf , Pratyush Yadav , Pasha Tatashin , Andrew Morton Cc: linux-mm@kvack.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Tarun Sahu Content-Type: text/plain; charset="UTF-8" Adding KHOSER_COPY_TYPESAFE and KHOSER_COPY_TYPEUNSAFE to copy one serializeable pointer to another. It basically allows copy of phys val of the serializeable pointer. Signed-off-by: Tarun Sahu --- include/linux/kho/abi/kexec_handover.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/kho/abi/kexec_handover.h b/include/linux/kho/abi/kexec_handover.h index 5e2eb8519bda..618408fbe9c9 100644 --- a/include/linux/kho/abi/kexec_handover.h +++ b/include/linux/kho/abi/kexec_handover.h @@ -139,6 +139,18 @@ (typeof((s).ptr))((s).phys ? phys_to_virt((s).phys) : NULL); \ }) +/* Copies one serializable pointer to another of same type. */ +#define KHOSER_COPY_TYPESAFE(dest, src) \ + ({ \ + typecheck(typeof((dest).ptr), (src).ptr); \ + (dest).phys = (src).phys; \ + }) + +/* Copies one serializable pointer to another. */ +#define KHOSER_COPY_TYPEUNSAFE(dest, src) \ + ({ \ + (dest).phys = (src).phys; \ + }) /* * This header is embedded at the beginning of each `kho_vmalloc_chunk` * and contains a pointer to the next chunk in the linked list, -- 2.55.0.rc0.738.g0c8ab3ebcc-goog