Date: Wed, 12 Apr 2023 07:35:39 GMT From: =?utf-8?Q?Corvin=20K=C3=B6hne?= <corvink@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 305edaa47918 - main - bhyve: add QEMU_FWCFG_INDEX_MAX_CPUS item Message-ID: <202304120735.33C7Zd9c011581@gitrepo.freebsd.org>
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The branch main has been updated by corvink: URL: https://cgit.FreeBSD.org/src/commit/?id=305edaa47918a559de46a5d72060644009f1875c commit 305edaa47918a559de46a5d72060644009f1875c Author: Corvin Köhne <corvink@FreeBSD.org> AuthorDate: 2022-06-21 08:35:40 +0000 Commit: Corvin Köhne <corvink@FreeBSD.org> CommitDate: 2023-04-12 07:35:33 +0000 bhyve: add QEMU_FWCFG_INDEX_MAX_CPUS item Requested-by: coreboot Reviewed by: <If someone else reviewed your modification.> MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D39315 --- usr.sbin/bhyve/qemu_fwcfg.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/usr.sbin/bhyve/qemu_fwcfg.c b/usr.sbin/bhyve/qemu_fwcfg.c index 3c7cd0f33224..ddd73d06d34d 100644 --- a/usr.sbin/bhyve/qemu_fwcfg.c +++ b/usr.sbin/bhyve/qemu_fwcfg.c @@ -44,6 +44,7 @@ #define QEMU_FWCFG_INDEX_SIGNATURE 0x00 #define QEMU_FWCFG_INDEX_ID 0x01 #define QEMU_FWCFG_INDEX_NB_CPUS 0x05 +#define QEMU_FWCFG_INDEX_MAX_CPUS 0x0F #define QEMU_FWCFG_INDEX_FILE_DIR 0x19 #define QEMU_FWCFG_FIRST_FILE_INDEX 0x20 @@ -227,6 +228,24 @@ qemu_fwcfg_add_item_id(void) (uint8_t *)fwcfg_id)); } +static int +qemu_fwcfg_add_item_max_cpus(void) +{ + uint16_t *fwcfg_max_cpus = calloc(1, sizeof(uint16_t)); + if (fwcfg_max_cpus == NULL) { + return (ENOMEM); + } + + /* + * We don't support cpu hotplug yet. For that reason, use guest_ncpus instead + * of maxcpus. + */ + *fwcfg_max_cpus = htole16(guest_ncpus); + + return (qemu_fwcfg_add_item(QEMU_FWCFG_ARCHITECTURE_GENERIC, + QEMU_FWCFG_INDEX_MAX_CPUS, sizeof(uint16_t), fwcfg_max_cpus)); +} + static int qemu_fwcfg_add_item_nb_cpus(void) { @@ -433,6 +452,10 @@ qemu_fwcfg_init(struct vmctx *const ctx) warnx("%s: Unable to add nb_cpus item", __func__); goto done; } + if ((error = qemu_fwcfg_add_item_max_cpus()) != 0) { + warnx("%s: Unable to add max_cpus item", __func__); + goto done; + } if ((error = qemu_fwcfg_add_item_file_dir()) != 0) { warnx("%s: Unable to add file_dir item", __func__); goto done;
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