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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1753114974; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LFIA52aLnJLo4iSfDSS+0eck6FoSAwP11FgR2rElbiU=; b=X1NzwxOyV6TGjsDsaekBwbHel+WKdoDqhh71p/19fvzgt5LianNQq2Wr8GHefvZIZuPn/I 4860YjwWM+mCM10WP6LVt9JA/kyPfhzYw1z52U0q0JeiGs6SKtbanb9C7Jh4Lvbwp5RIy+ pyYZY+EGPVwY+z5Hwrypc0PQXUCC+Ko= X-MC-Unique: 4rRK5E_vPLWASb9WVJNFIA-1 X-Mimecast-MFC-AGG-ID: 4rRK5E_vPLWASb9WVJNFIA_1753114969 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza , Michael Kowal , Glenn Miles , Caleb Schlossin , Gautam Menghani , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 04/50] ppc/xive2: Remote VSDs need to match on forwarding address Date: Mon, 21 Jul 2025 18:21:47 +0200 Message-ID: <20250721162233.686837-5-clg@redhat.com> In-Reply-To: <20250721162233.686837-1-clg@redhat.com> References: <20250721162233.686837-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.926, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1753115108972116600 From: Michael Kowal In a multi chip environment there will be remote/forwarded VSDs. The check to find a matching INT controller (XIVE) of the remote block number was checking the INTs chip number. Block numbers are not tied to a chip number. The matching remote INT is the one that matches the forwarded VSD address with VSD types associated MMIO BAR. Signed-off-by: Michael Kowal Reviewed-by: Nicholas Piggin Reviewed-by: Glenn Miles Reviewed-by: Michael Kowal Reviewed-by: Caleb Schlossin Tested-by: Gautam Menghani Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-5-npiggin@gm= ail.com [ clg: Fixed log format in pnv_xive2_get_remote() ] Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/pnv_xive2.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/hw/intc/pnv_xive2.c b/hw/intc/pnv_xive2.c index ec8b0c68f1a4..6b724fe762f6 100644 --- a/hw/intc/pnv_xive2.c +++ b/hw/intc/pnv_xive2.c @@ -101,12 +101,10 @@ static uint32_t pnv_xive2_block_id(PnvXive2 *xive) } =20 /* - * Remote access to controllers. HW uses MMIOs. For now, a simple scan - * of the chips is good enough. - * - * TODO: Block scope support + * Remote access to INT controllers. HW uses MMIOs(?). For now, a simple + * scan of all the chips INT controller is good enough. */ -static PnvXive2 *pnv_xive2_get_remote(uint8_t blk) +static PnvXive2 *pnv_xive2_get_remote(uint32_t vsd_type, hwaddr fwd_addr) { PnvMachineState *pnv =3D PNV_MACHINE(qdev_get_machine()); int i; @@ -115,10 +113,23 @@ static PnvXive2 *pnv_xive2_get_remote(uint8_t blk) Pnv10Chip *chip10 =3D PNV10_CHIP(pnv->chips[i]); PnvXive2 *xive =3D &chip10->xive; =20 - if (pnv_xive2_block_id(xive) =3D=3D blk) { + /* + * Is this the XIVE matching the forwarded VSD address is for this + * VSD type + */ + if ((vsd_type =3D=3D VST_ESB && fwd_addr =3D=3D xive->esb_base) = || + (vsd_type =3D=3D VST_END && fwd_addr =3D=3D xive->end_base) = || + ((vsd_type =3D=3D VST_NVP || + vsd_type =3D=3D VST_NVG) && fwd_addr =3D=3D xive->nvpg_base)= || + (vsd_type =3D=3D VST_NVC && fwd_addr =3D=3D xive->nvc_base))= { return xive; } } + + qemu_log_mask(LOG_GUEST_ERROR, + "XIVE: >>>>> %s vsd_type %u fwd_addr 0x%"HWADDR_PRIx + " NOT FOUND\n", + __func__, vsd_type, fwd_addr); return NULL; } =20 @@ -251,8 +262,7 @@ static uint64_t pnv_xive2_vst_addr(PnvXive2 *xive, uint= 32_t type, uint8_t blk, =20 /* Remote VST access */ if (GETFIELD(VSD_MODE, vsd) =3D=3D VSD_MODE_FORWARD) { - xive =3D pnv_xive2_get_remote(blk); - + xive =3D pnv_xive2_get_remote(type, (vsd & VSD_ADDRESS_MASK)); return xive ? pnv_xive2_vst_addr(xive, type, blk, idx) : 0; } =20 --=20 2.50.1