From: "Michael S. Tsirkin" <mst@redhat.com> To: qemu-devel@nongnu.org, avi@redhat.com, kvm@vger.kernel.org, aliguori@us.ibm.com, kwolf@redhat.com Subject: [PATCH 1/2] fix segfault in msix_save Date: Wed, 1 Jul 2009 14:50:14 +0300 [thread overview] Message-ID: <20090701115014.GB16726@redhat.com> (raw) In-Reply-To: <cover.1246448461.git.mst@redhat.com> This fixes segfault reported by Kevin Wolf, and simplifies the code in msix_save. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- hw/msix.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/hw/msix.c b/hw/msix.c index 4ab6da6..98c62a5 100644 --- a/hw/msix.c +++ b/hw/msix.c @@ -284,11 +284,13 @@ int msix_uninit(PCIDevice *dev) void msix_save(PCIDevice *dev, QEMUFile *f) { - unsigned nentries = (pci_get_word(dev->config + PCI_MSIX_FLAGS) & - PCI_MSIX_FLAGS_QSIZE) + 1; - qemu_put_buffer(f, dev->msix_table_page, nentries * MSIX_ENTRY_SIZE); - qemu_put_buffer(f, dev->msix_table_page + MSIX_PAGE_PENDING, - (nentries + 7) / 8); + unsigned n = dev->msix_entries_nr; + + if (!dev->cap_present & QEMU_PCI_CAP_MSIX) + return; + + qemu_put_buffer(f, dev->msix_table_page, n * MSIX_ENTRY_SIZE); + qemu_put_buffer(f, dev->msix_table_page + MSIX_PAGE_PENDING, (n + 7) / 8); } /* Should be called after restoring the config space. */ -- 1.6.2.2
WARNING: multiple messages have this Message-ID (diff)
From: "Michael S. Tsirkin" <mst@redhat.com> To: qemu-devel@nongnu.org, avi@redhat.com, kvm@vger.kernel.org, aliguori@us.ibm.com, kwolf@redhat.com Subject: [Qemu-devel] [PATCH 1/2] fix segfault in msix_save Date: Wed, 1 Jul 2009 14:50:14 +0300 [thread overview] Message-ID: <20090701115014.GB16726@redhat.com> (raw) In-Reply-To: <cover.1246448461.git.mst@redhat.com> This fixes segfault reported by Kevin Wolf, and simplifies the code in msix_save. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- hw/msix.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/hw/msix.c b/hw/msix.c index 4ab6da6..98c62a5 100644 --- a/hw/msix.c +++ b/hw/msix.c @@ -284,11 +284,13 @@ int msix_uninit(PCIDevice *dev) void msix_save(PCIDevice *dev, QEMUFile *f) { - unsigned nentries = (pci_get_word(dev->config + PCI_MSIX_FLAGS) & - PCI_MSIX_FLAGS_QSIZE) + 1; - qemu_put_buffer(f, dev->msix_table_page, nentries * MSIX_ENTRY_SIZE); - qemu_put_buffer(f, dev->msix_table_page + MSIX_PAGE_PENDING, - (nentries + 7) / 8); + unsigned n = dev->msix_entries_nr; + + if (!dev->cap_present & QEMU_PCI_CAP_MSIX) + return; + + qemu_put_buffer(f, dev->msix_table_page, n * MSIX_ENTRY_SIZE); + qemu_put_buffer(f, dev->msix_table_page + MSIX_PAGE_PENDING, (n + 7) / 8); } /* Should be called after restoring the config space. */ -- 1.6.2.2
next parent reply other threads:[~2009-07-01 11:50 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <cover.1246448461.git.mst@redhat.com> 2009-07-01 11:50 ` Michael S. Tsirkin [this message] 2009-07-01 11:50 ` [Qemu-devel] [PATCH 1/2] fix segfault in msix_save Michael S. Tsirkin 2009-07-01 12:08 ` Michael S. Tsirkin 2009-07-01 12:27 ` Kevin Wolf 2009-07-01 12:27 ` [Qemu-devel] " Kevin Wolf 2009-07-01 11:50 ` [PATCH 2/2] qemu: fix up load for msi-x Michael S. Tsirkin 2009-07-01 11:50 ` [Qemu-devel] " Michael S. Tsirkin
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