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envelope-from=its@irrelevant.dk; helo=wfhigh5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264571477100001 Content-Type: text/plain; charset="utf-8" From: Minwoo Im Currently, when a VF is created, it uses the 'params' object of the PF as it is. In other words, the 'params.serial' string memory area is also shared. In this situation, if the VF is removed from the system, the PF's 'params.serial' object is released with object_finalize() followed by object_property_del_all() which release the memory for 'serial' property. If that happens, the next VF created will inherit a serial from a corrupted memory area. If this happens, an error will occur when comparing subsys->serial and n->params.serial in the nvme_subsys_register_ctrl() function. Cc: qemu-stable@nongnu.org Fixes: 44c2c09488db ("hw/nvme: Add support for SR-IOV") Signed-off-by: Minwoo Im Reviewed-by: Klaus Jensen Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 76fe0397045b..94ef63945725 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -8309,9 +8309,15 @@ static void nvme_realize(PCIDevice *pci_dev, Error *= *errp) if (pci_is_vf(pci_dev)) { /* * VFs derive settings from the parent. PF's lifespan exceeds - * that of VF's, so it's safe to share params.serial. + * that of VF's. */ memcpy(&n->params, &pn->params, sizeof(NvmeParams)); + + /* + * Set PF's serial value to a new string memory to prevent 'serial' + * property object release of PF when a VF is removed from the sys= tem. + */ + n->params.serial =3D g_strdup(pn->params.serial); n->subsys =3D pn->subsys; } =20 --=20 2.44.0 From nobody Sun May 12 04:25:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1710264531; cv=none; d=zohomail.com; s=zohoarc; b=DoTILD4uCNMV/YPmy01ysQL/y+zR+NZVfSTSLGHxWSl93m0R5MTGpWdwisPAcqJExMhSDM/ktu35D9ZkQ0I4dg/GxhaGK0DB1HoGhnn2f+hfzcAllxhXokslA3ztwImd2CVyJVr62YDYNW9t5aGkQuhY1qSBPKV3aA1PB6qXEDI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; 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envelope-from=its@irrelevant.dk; helo=wfout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264533225100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen The number of logical blocks within a source range is converted into a 1s based number at the time of parsing. However, when verifying the copy length we add one again, causing the check against MCL to fail in error. Cc: qemu-stable@nongnu.org Fixes: 381ab99d8587 ("hw/nvme: check maximum copy length (MCL) for COPY") Reviewed-by: Minwoo Im Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 94ef63945725..abc0387f2ca8 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -2855,7 +2855,7 @@ static inline uint16_t nvme_check_copy_mcl(NvmeNamesp= ace *ns, uint32_t nlb; nvme_copy_source_range_parse(iocb->ranges, idx, iocb->format, NULL, &nlb, NULL, NULL, NULL); - copy_len +=3D nlb + 1; + copy_len +=3D nlb; } =20 if (copy_len > ns->id_ns.mcl) { --=20 2.44.0 From nobody Sun May 12 04:25:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1710264537; cv=none; d=zohomail.com; s=zohoarc; b=Gsje9qoL73Zjn/VtqT4GPs3vvWZdNxRh6+ZBpokHsQszcLVWnI2Brul52l40Z/zBSeL3+MoTn3JSSqN9ghst6xGFJvQrTdoUonyiRrC+AwtEvjAxi80GJMbK1iv23efBzuA6UCaborbjfBUbS52l8qkv5PGupMSjcMnzNh43UoI= ARC-Message-Signature: i=1; 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envelope-from=its@irrelevant.dk; helo=wfhigh5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264539282100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen My colleague, Jesper, will be assiting with hw/nvme related reviews. Add him with R: so he gets automatically bugged going forward. Cc: Jesper Devantier Acked-by: Jesper Devantier Signed-off-by: Klaus Jensen --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 12f5e47a11f4..7f96ce857486 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2407,6 +2407,7 @@ F: docs/system/devices/virtio-snd.rst nvme M: Keith Busch M: Klaus Jensen +R: Jesper Devantier L: qemu-block@nongnu.org S: Supported F: hw/nvme/* --=20 2.44.0 From nobody Sun May 12 04:25:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1710264528; cv=none; d=zohomail.com; s=zohoarc; b=P4fMT0Jz2hEuR6iFD2l0h+0f7dRRE3gfCTIXgH9krHsh9040fTC9s58a3WjMGP9aqco6EoI8YcvGa03ex6VQT3vvbo30L8n9+dVzXSXZzsvjFACbYFJlrO/3dY/6c/HVdX+sGXwd30KucV+xBWgrSNpDBkZ6eCOS3nPbd0ZZcQw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; 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envelope-from=its@irrelevant.dk; helo=wfout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264529257100001 Content-Type: text/plain; charset="utf-8" From: Roque Arcudia Hernandez This patch adds a way to specify an NGUID for a given NVMe Namespace using a string of hexadecimal digits with an optional '-' separator to group bytes.= For instance: -device nvme-ns,nguid=3D"e9accd3b83904e13167cf0593437f57d" If provided, the NGUID will be part of the Namespace Identification Descrip= tor list and the Identify Namespace data. Signed-off-by: Roque Arcudia Hernandez Signed-off-by: Nabih Estefan Reviewed-by: Klaus Jensen Signed-off-by: Klaus Jensen --- docs/system/devices/nvme.rst | 7 ++ hw/nvme/ctrl.c | 12 +++ hw/nvme/meson.build | 2 +- hw/nvme/nguid.c | 187 +++++++++++++++++++++++++++++++++++ hw/nvme/ns.c | 2 + hw/nvme/nvme.h | 26 +++-- 6 files changed, 229 insertions(+), 7 deletions(-) create mode 100644 hw/nvme/nguid.c diff --git a/docs/system/devices/nvme.rst b/docs/system/devices/nvme.rst index 4ea957baed10..d2b1ca96455f 100644 --- a/docs/system/devices/nvme.rst +++ b/docs/system/devices/nvme.rst @@ -81,6 +81,13 @@ There are a number of parameters available: Set the UUID of the namespace. This will be reported as a "Namespace UUI= D" descriptor in the Namespace Identification Descriptor List. =20 +``nguid`` + Set the NGUID of the namespace. This will be reported as a "Namespace Gl= obally + Unique Identifier" descriptor in the Namespace Identification Descriptor= List. + It is specified as a string of hexadecimal digits containing exactly 16 = bytes + or "auto" for a random value. An optional '-' separator could be used to= group + bytes. If not specified the NGUID will remain all zeros. + ``eui64`` Set the EUI-64 of the namespace. This will be reported as a "IEEE Extend= ed Unique Identifier" descriptor in the Namespace Identification Descriptor= List. diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index abc0387f2ca8..6c5a2b875da8 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -5640,6 +5640,10 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl= *n, NvmeRequest *req) NvmeIdNsDescr hdr; uint8_t v[NVME_NIDL_UUID]; } QEMU_PACKED uuid =3D {}; + struct { + NvmeIdNsDescr hdr; + uint8_t v[NVME_NIDL_NGUID]; + } QEMU_PACKED nguid =3D {}; struct { NvmeIdNsDescr hdr; uint64_t v; @@ -5668,6 +5672,14 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl= *n, NvmeRequest *req) pos +=3D sizeof(uuid); } =20 + if (!nvme_nguid_is_null(&ns->params.nguid)) { + nguid.hdr.nidt =3D NVME_NIDT_NGUID; + nguid.hdr.nidl =3D NVME_NIDL_NGUID; + memcpy(nguid.v, ns->params.nguid.data, NVME_NIDL_NGUID); + memcpy(pos, &nguid, sizeof(nguid)); + pos +=3D sizeof(nguid); + } + if (ns->params.eui64) { eui64.hdr.nidt =3D NVME_NIDT_EUI64; eui64.hdr.nidl =3D NVME_NIDL_EUI64; diff --git a/hw/nvme/meson.build b/hw/nvme/meson.build index 1a6a2ca2f307..7d5caa53c280 100644 --- a/hw/nvme/meson.build +++ b/hw/nvme/meson.build @@ -1 +1 @@ -system_ss.add(when: 'CONFIG_NVME_PCI', if_true: files('ctrl.c', 'dif.c', '= ns.c', 'subsys.c')) +system_ss.add(when: 'CONFIG_NVME_PCI', if_true: files('ctrl.c', 'dif.c', '= ns.c', 'subsys.c', 'nguid.c')) \ No newline at end of file diff --git a/hw/nvme/nguid.c b/hw/nvme/nguid.c new file mode 100644 index 000000000000..829832bd9f41 --- /dev/null +++ b/hw/nvme/nguid.c @@ -0,0 +1,187 @@ +/* + * QEMU NVMe NGUID functions + * + * Copyright 2024 Google LLC + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WIT= HOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "qemu/osdep.h" +#include "qapi/visitor.h" +#include "qemu/ctype.h" +#include "nvme.h" + +#define NGUID_SEPARATOR '-' + +#define NGUID_VALUE_AUTO "auto" + +#define NGUID_FMT \ + "%02hhx%02hhx%02hhx%02hhx" \ + "%02hhx%02hhx%02hhx%02hhx" \ + "%02hhx%02hhx%02hhx%02hhx" \ + "%02hhx%02hhx%02hhx%02hhx" + +#define NGUID_STR_LEN (2 * NGUID_LEN + 1) + +bool nvme_nguid_is_null(const NvmeNGUID *nguid) +{ + static NvmeNGUID null_nguid; + return memcmp(nguid, &null_nguid, sizeof(NvmeNGUID)) =3D=3D 0; +} + +static void nvme_nguid_generate(NvmeNGUID *out) +{ + int i; + uint32_t x; + + QEMU_BUILD_BUG_ON((NGUID_LEN % sizeof(x)) !=3D 0); + + for (i =3D 0; i < NGUID_LEN; i +=3D sizeof(x)) { + x =3D g_random_int(); + memcpy(&out->data[i], &x, sizeof(x)); + } +} + +/* + * The Linux Kernel typically prints the NGUID of an NVMe namespace using = the + * same format as the UUID. For instance: + * + * $ cat /sys/class/block/nvme0n1/nguid + * e9accd3b-8390-4e13-167c-f0593437f57d + * + * When there is no UUID but there is NGUID the Kernel will print the NGUI= D as + * wwid and it won't use the UUID format: + * + * $ cat /sys/class/block/nvme0n1/wwid + * eui.e9accd3b83904e13167cf0593437f57d + * + * The NGUID has different fields compared to the UUID, so the grouping us= ed in + * the UUID format has no relation with the 3 fields of the NGUID. + * + * This implementation won't expect a strict format as the UUID one and in= stead + * it will admit any string of hexadecimal digits. Byte groups could be cr= eated + * using the '-' separator. The number of bytes needs to be exactly 16 and= the + * separator '-' has to be exactly in a byte boundary. The following are + * examples of accepted formats for the NGUID string: + * + * nguid=3D"e9accd3b-8390-4e13-167c-f0593437f57d" + * nguid=3D"e9accd3b83904e13167cf0593437f57d" + * nguid=3D"FEDCBA9876543210-ABCDEF-0123456789" + */ +static bool nvme_nguid_is_valid(const char *str) +{ + int i; + int digit_count =3D 0; + + for (i =3D 0; i < strlen(str); i++) { + const char c =3D str[i]; + if (qemu_isxdigit(c)) { + digit_count++; + continue; + } + if (c =3D=3D NGUID_SEPARATOR) { + /* + * We need to make sure the separator is in a byte boundary, t= he + * string does not start with the separator and they are not b= ack to + * back "--". + */ + if ((i > 0) && (str[i - 1] !=3D NGUID_SEPARATOR) && + (digit_count % 2) =3D=3D 0) { + continue; + } + } + return false; + } + /* + * The string should have the correct byte length and not finish with = the + * separator + */ + return (digit_count =3D=3D (2 * NGUID_LEN)) && (str[i - 1] !=3D NGUID_= SEPARATOR); +} + +static int nvme_nguid_parse(const char *str, NvmeNGUID *nguid) +{ + uint8_t *id =3D &nguid->data[0]; + int ret =3D 0; + int i; + const char *ptr =3D str; + + if (!nvme_nguid_is_valid(str)) { + return -1; + } + + for (i =3D 0; i < NGUID_LEN; i++) { + ret =3D sscanf(ptr, "%02hhx", &id[i]); + if (ret !=3D 1) { + return -1; + } + ptr +=3D 2; + if (*ptr =3D=3D NGUID_SEPARATOR) { + ptr++; + } + } + + return 0; +} + +/* + * When converted back to string this implementation will use a raw hex nu= mber + * with no separators, for instance: + * + * "e9accd3b83904e13167cf0593437f57d" + */ +static void nvme_nguid_stringify(const NvmeNGUID *nguid, char *out) +{ + const uint8_t *id =3D &nguid->data[0]; + snprintf(out, NGUID_STR_LEN, NGUID_FMT, + id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7], + id[8], id[9], id[10], id[11], id[12], id[13], id[14], id[15]); +} + +static void get_nguid(Object *obj, Visitor *v, const char *name, void *opa= que, + Error **errp) +{ + Property *prop =3D opaque; + NvmeNGUID *nguid =3D object_field_prop_ptr(obj, prop); + char buffer[NGUID_STR_LEN]; + char *p =3D buffer; + + nvme_nguid_stringify(nguid, buffer); + + visit_type_str(v, name, &p, errp); +} + +static void set_nguid(Object *obj, Visitor *v, const char *name, void *opa= que, + Error **errp) +{ + Property *prop =3D opaque; + NvmeNGUID *nguid =3D object_field_prop_ptr(obj, prop); + char *str; + + if (!visit_type_str(v, name, &str, errp)) { + return; + } + + if (!strcmp(str, NGUID_VALUE_AUTO)) { + nvme_nguid_generate(nguid); + } else if (nvme_nguid_parse(str, nguid) < 0) { + error_set_from_qdev_prop_error(errp, EINVAL, obj, name, str); + } + g_free(str); +} + +const PropertyInfo qdev_prop_nguid =3D { + .name =3D "str", + .description =3D + "NGUID or \"" NGUID_VALUE_AUTO "\" for random value", + .get =3D get_nguid, + .set =3D set_nguid, +}; diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c index 0eabcf5cf500..ea8db175dbd1 100644 --- a/hw/nvme/ns.c +++ b/hw/nvme/ns.c @@ -89,6 +89,7 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp) id_ns->mcl =3D cpu_to_le32(ns->params.mcl); id_ns->msrc =3D ns->params.msrc; id_ns->eui64 =3D cpu_to_be64(ns->params.eui64); + memcpy(&id_ns->nguid, &ns->params.nguid.data, sizeof(id_ns->nguid)); =20 ds =3D 31 - clz32(ns->blkconf.logical_block_size); ms =3D ns->params.ms; @@ -797,6 +798,7 @@ static Property nvme_ns_props[] =3D { DEFINE_PROP_BOOL("shared", NvmeNamespace, params.shared, true), DEFINE_PROP_UINT32("nsid", NvmeNamespace, params.nsid, 0), DEFINE_PROP_UUID_NODEFAULT("uuid", NvmeNamespace, params.uuid), + DEFINE_PROP_NGUID_NODEFAULT("nguid", NvmeNamespace, params.nguid), DEFINE_PROP_UINT64("eui64", NvmeNamespace, params.eui64, 0), DEFINE_PROP_UINT16("ms", NvmeNamespace, params.ms, 0), DEFINE_PROP_UINT8("mset", NvmeNamespace, params.mset, 0), diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index 5f2ae7b28b9c..392c02942682 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -171,13 +171,27 @@ static const uint8_t nvme_fdp_evf_shifts[FDP_EVT_MAX]= =3D { [FDP_EVT_RUH_IMPLICIT_RU_CHANGE] =3D 33, }; =20 +#define NGUID_LEN 16 + +typedef struct { + uint8_t data[NGUID_LEN]; +} NvmeNGUID; + +bool nvme_nguid_is_null(const NvmeNGUID *nguid); + +extern const PropertyInfo qdev_prop_nguid; + +#define DEFINE_PROP_NGUID_NODEFAULT(_name, _state, _field) \ + DEFINE_PROP(_name, _state, _field, qdev_prop_nguid, NvmeNGUID) + typedef struct NvmeNamespaceParams { - bool detached; - bool shared; - uint32_t nsid; - QemuUUID uuid; - uint64_t eui64; - bool eui64_default; + bool detached; + bool shared; + uint32_t nsid; + QemuUUID uuid; + NvmeNGUID nguid; + uint64_t eui64; + bool eui64_default; =20 uint16_t ms; uint8_t mset; --=20 2.44.0 From nobody Sun May 12 04:25:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1710264520; cv=none; d=zohomail.com; s=zohoarc; b=naqh++/7kVjpwm1wH7fooGsTdwCtSkl9Uu5P4QJkVZ+6xrmiDUz10tOKR3AdwJ3Wn1gnoNIlryKenSqHOmWRPtZR3h6qwY3XO07l3s4rO69hkp5wOw0+8nRn4Lfro+EztZoiuLnk7x+oOhH3Ihxz3mUG1aqXibCxQ3RtT/2U0X0= ARC-Message-Signature: i=1; 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envelope-from=its@irrelevant.dk; helo=wfhigh5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264521148100001 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen Generalize the mbar size helper such that it can handle cases where the MSI-X table and PBA are expected to be in an exclusive bar. Cc: qemu-stable@nongnu.org Reviewed-by: Jesper Wendel Devantier Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 28 ++++++++++++++++------------ 1 file changed, 16 insertions(+), 12 deletions(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 6c5a2b875da8..efcfd7171066 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -8015,13 +8015,18 @@ static void nvme_init_pmr(NvmeCtrl *n, PCIDevice *p= ci_dev) memory_region_set_enabled(&n->pmr.dev->mr, false); } =20 -static uint64_t nvme_bar_size(unsigned total_queues, unsigned total_irqs, - unsigned *msix_table_offset, - unsigned *msix_pba_offset) +static uint64_t nvme_mbar_size(unsigned total_queues, unsigned total_irqs, + unsigned *msix_table_offset, + unsigned *msix_pba_offset) { - uint64_t bar_size, msix_table_size, msix_pba_size; + uint64_t bar_size, msix_table_size; =20 bar_size =3D sizeof(NvmeBar) + 2 * total_queues * NVME_DB_SIZE; + + if (total_irqs =3D=3D 0) { + goto out; + } + bar_size =3D QEMU_ALIGN_UP(bar_size, 4 * KiB); =20 if (msix_table_offset) { @@ -8036,11 +8041,10 @@ static uint64_t nvme_bar_size(unsigned total_queues= , unsigned total_irqs, *msix_pba_offset =3D bar_size; } =20 - msix_pba_size =3D QEMU_ALIGN_UP(total_irqs, 64) / 8; - bar_size +=3D msix_pba_size; + bar_size +=3D QEMU_ALIGN_UP(total_irqs, 64) / 8; =20 - bar_size =3D pow2ceil(bar_size); - return bar_size; +out: + return pow2ceil(bar_size); } =20 static void nvme_init_sriov(NvmeCtrl *n, PCIDevice *pci_dev, uint16_t offs= et) @@ -8048,7 +8052,7 @@ static void nvme_init_sriov(NvmeCtrl *n, PCIDevice *p= ci_dev, uint16_t offset) uint16_t vf_dev_id =3D n->params.use_intel_id ? PCI_DEVICE_ID_INTEL_NVME : PCI_DEVICE_ID_REDHAT_N= VME; NvmePriCtrlCap *cap =3D &n->pri_ctrl_cap; - uint64_t bar_size =3D nvme_bar_size(le16_to_cpu(cap->vqfrsm), + uint64_t bar_size =3D nvme_mbar_size(le16_to_cpu(cap->vqfrsm), le16_to_cpu(cap->vifrsm), NULL, NULL); =20 @@ -8087,7 +8091,7 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci= _dev, Error **errp) ERRP_GUARD(); uint8_t *pci_conf =3D pci_dev->config; uint64_t bar_size; - unsigned msix_table_offset, msix_pba_offset; + unsigned msix_table_offset =3D 0, msix_pba_offset =3D 0; int ret; =20 pci_conf[PCI_INTERRUPT_PIN] =3D 1; @@ -8110,8 +8114,8 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *pci= _dev, Error **errp) } =20 /* add one to max_ioqpairs to account for the admin queue pair */ - bar_size =3D nvme_bar_size(n->params.max_ioqpairs + 1, n->params.msix_= qsize, - &msix_table_offset, &msix_pba_offset); + bar_size =3D nvme_mbar_size(n->params.max_ioqpairs + 1, n->params.msix= _qsize, + &msix_table_offset, &msix_pba_offset); 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envelope-from=its@irrelevant.dk; helo=wfout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @irrelevant.dk) X-ZM-MESSAGEID: 1710264493831100002 Content-Type: text/plain; charset="utf-8" From: Klaus Jensen Commit 1901b4967c3f ("hw/block/nvme: move msix table and pba to BAR 0") moved the MSI-X table and PBA to BAR 0 to make room for enabling CMR and PMR at the same time. As reported by Julien Grall in #2184, this breaks migration through system hibernation. Add a machine compatibility parameter and set it on machines pre 6.0 to enable the old behavior automatically, restoring the hibernation migration support. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2184 Fixes: 1901b4967c3f ("hw/block/nvme: move msix table and pba to BAR 0") Reported-by: Julien Grall julien@xen.org Tested-by: Julien Grall julien@xen.org Reviewed-by: Jesper Wendel Devantier Signed-off-by: Klaus Jensen --- hw/core/machine.c | 1 + hw/nvme/ctrl.c | 53 +++++++++++++++++++++++++++++++++-------------- hw/nvme/nvme.h | 1 + 3 files changed, 39 insertions(+), 16 deletions(-) diff --git a/hw/core/machine.c b/hw/core/machine.c index 0e9d646b61e1..37e5d4c8dfd5 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -102,6 +102,7 @@ GlobalProperty hw_compat_5_2[] =3D { { "PIIX4_PM", "smm-compat", "on"}, { "virtio-blk-device", "report-discard-granularity", "off" }, { "virtio-net-pci-base", "vectors", "3"}, + { "nvme", "msix-exclusive-bar", "on"}, }; const size_t hw_compat_5_2_len =3D G_N_ELEMENTS(hw_compat_5_2); =20 diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index efcfd7171066..036b15403a02 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -7810,6 +7810,11 @@ static bool nvme_check_params(NvmeCtrl *n, Error **e= rrp) } =20 if (n->pmr.dev) { + if (params->msix_exclusive_bar) { + error_setg(errp, "not enough BARs available to enable PMR"); + return false; + } + if (host_memory_backend_is_mapped(n->pmr.dev)) { error_setg(errp, "can't use already busy memdev: %s", object_get_canonical_path_component(OBJECT(n->pmr.d= ev))); @@ -8113,24 +8118,38 @@ static bool nvme_init_pci(NvmeCtrl *n, PCIDevice *p= ci_dev, Error **errp) pcie_ari_init(pci_dev, 0x100); } =20 - /* add one to max_ioqpairs to account for the admin queue pair */ - bar_size =3D nvme_mbar_size(n->params.max_ioqpairs + 1, n->params.msix= _qsize, - &msix_table_offset, &msix_pba_offset); - - memory_region_init(&n->bar0, OBJECT(n), "nvme-bar0", bar_size); - memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nvme", - msix_table_offset); - memory_region_add_subregion(&n->bar0, 0, &n->iomem); - - if (pci_is_vf(pci_dev)) { - pcie_sriov_vf_register_bar(pci_dev, 0, &n->bar0); - } else { + if (n->params.msix_exclusive_bar && !pci_is_vf(pci_dev)) { + bar_size =3D nvme_mbar_size(n->params.max_ioqpairs + 1, 0, NULL, N= ULL); + memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nv= me", + bar_size); pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | - PCI_BASE_ADDRESS_MEM_TYPE_64, &n->bar0); + PCI_BASE_ADDRESS_MEM_TYPE_64, &n->iomem); + ret =3D msix_init_exclusive_bar(pci_dev, n->params.msix_qsize, 4, = errp); + } else { + assert(n->params.msix_qsize >=3D 1); + + /* add one to max_ioqpairs to account for the admin queue pair */ + bar_size =3D nvme_mbar_size(n->params.max_ioqpairs + 1, + n->params.msix_qsize, &msix_table_offset, + &msix_pba_offset); + + memory_region_init(&n->bar0, OBJECT(n), "nvme-bar0", bar_size); + memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nv= me", + msix_table_offset); + memory_region_add_subregion(&n->bar0, 0, &n->iomem); + + if (pci_is_vf(pci_dev)) { + pcie_sriov_vf_register_bar(pci_dev, 0, &n->bar0); + } else { + pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY | + PCI_BASE_ADDRESS_MEM_TYPE_64, &n->bar0); + } + + ret =3D msix_init(pci_dev, n->params.msix_qsize, + &n->bar0, 0, msix_table_offset, + &n->bar0, 0, msix_pba_offset, 0, errp); } - ret =3D msix_init(pci_dev, n->params.msix_qsize, - &n->bar0, 0, msix_table_offset, - &n->bar0, 0, msix_pba_offset, 0, errp); + if (ret =3D=3D -ENOTSUP) { /* report that msix is not supported, but do not error out */ warn_report_err(*errp); @@ -8434,6 +8453,8 @@ static Property nvme_props[] =3D { params.sriov_max_vi_per_vf, 0), DEFINE_PROP_UINT8("sriov_max_vq_per_vf", NvmeCtrl, params.sriov_max_vq_per_vf, 0), + DEFINE_PROP_BOOL("msix-exclusive-bar", NvmeCtrl, params.msix_exclusive= _bar, + false), DEFINE_PROP_END_OF_LIST(), }; =20 diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index 392c02942682..bed8191bd5fd 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -536,6 +536,7 @@ typedef struct NvmeParams { uint16_t sriov_vi_flexible; uint8_t sriov_max_vq_per_vf; uint8_t sriov_max_vi_per_vf; + bool msix_exclusive_bar; } NvmeParams; =20 typedef struct NvmeCtrl { --=20 2.44.0