From owner-svn-src-stable@freebsd.org Thu Nov 26 07:29:28 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EBC7C4A4028; Thu, 26 Nov 2020 07:29:28 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4ChTsh6NDrz3LBP; Thu, 26 Nov 2020 07:29:28 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C30A91F7A7; Thu, 26 Nov 2020 07:29:28 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0AQ7TSnY034555; Thu, 26 Nov 2020 07:29:28 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0AQ7TSb8034554; Thu, 26 Nov 2020 07:29:28 GMT (envelope-from kib@FreeBSD.org) Message-Id: <202011260729.0AQ7TSb8034554@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Thu, 26 Nov 2020 07:29:28 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r368049 - stable/12/usr.sbin/bhyve X-SVN-Group: stable-12 X-SVN-Commit-Author: kib X-SVN-Commit-Paths: stable/12/usr.sbin/bhyve X-SVN-Commit-Revision: 368049 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Nov 2020 07:29:29 -0000 Author: kib Date: Thu Nov 26 07:29:28 2020 New Revision: 368049 URL: https://svnweb.freebsd.org/changeset/base/368049 Log: MFC r367606: bhyve: avoid allocating BARs above the end of supported physical addresses. Modified: stable/12/usr.sbin/bhyve/pci_emul.c Directory Properties: stable/12/ (props changed) Modified: stable/12/usr.sbin/bhyve/pci_emul.c ============================================================================== --- stable/12/usr.sbin/bhyve/pci_emul.c Thu Nov 26 06:59:27 2020 (r368048) +++ stable/12/usr.sbin/bhyve/pci_emul.c Thu Nov 26 07:29:28 2020 (r368049) @@ -33,6 +33,9 @@ __FBSDID("$FreeBSD$"); #include #include +#include +#include +#include #include #include @@ -45,6 +48,8 @@ __FBSDID("$FreeBSD$"); #include #include +#include +#include #include #include "acpi.h" @@ -97,6 +102,7 @@ SET_DECLARE(pci_devemu_set, struct pci_devemu); static uint64_t pci_emul_iobase; static uint64_t pci_emul_membase32; static uint64_t pci_emul_membase64; +static uint64_t pci_emul_memlim64; #define PCI_EMUL_IOBASE 0x2000 #define PCI_EMUL_IOLIMIT 0x10000 @@ -107,9 +113,6 @@ SYSRES_MEM(PCI_EMUL_ECFG_BASE, PCI_EMUL_ECFG_SIZE); #define PCI_EMUL_MEMLIMIT32 PCI_EMUL_ECFG_BASE -#define PCI_EMUL_MEMBASE64 0xD000000000UL -#define PCI_EMUL_MEMLIMIT64 0xFD00000000UL - static struct pci_devemu *pci_emul_finddev(char *name); static void pci_lintr_route(struct pci_devinst *pi); static void pci_lintr_update(struct pci_devinst *pi); @@ -631,7 +634,7 @@ pci_emul_alloc_pbar(struct pci_devinst *pdi, int idx, baseptr = &hostbase; else baseptr = &pci_emul_membase64; - limit = PCI_EMUL_MEMLIMIT64; + limit = pci_emul_memlim64; mask = PCIM_BAR_MEM_BASE; lobits = PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_64 | PCIM_BAR_MEM_PREFETCH; @@ -1100,12 +1103,25 @@ init_pci(struct vmctx *ctx) struct slotinfo *si; struct funcinfo *fi; size_t lowmem; - int bus, slot, func; - int error; + uint64_t cpu_maxphysaddr, pci_emul_memresv64; + u_int regs[4]; + int bus, slot, func, error; pci_emul_iobase = PCI_EMUL_IOBASE; pci_emul_membase32 = vm_get_lowmem_limit(ctx); - pci_emul_membase64 = PCI_EMUL_MEMBASE64; + + do_cpuid(0x80000008, regs); + cpu_maxphysaddr = 1ULL << (regs[0] & 0xff); + if (cpu_maxphysaddr > VM_MAXUSER_ADDRESS) + cpu_maxphysaddr = VM_MAXUSER_ADDRESS; + pci_emul_memresv64 = cpu_maxphysaddr / 4; + /* + * Max power of 2 that is less then + * cpu_maxphysaddr - pci_emul_memresv64. + */ + pci_emul_membase64 = 1ULL << (flsl(cpu_maxphysaddr - + pci_emul_memresv64) - 1); + pci_emul_memlim64 = cpu_maxphysaddr; for (bus = 0; bus < MAXBUSES; bus++) { if ((bi = pci_businfo[bus]) == NULL)