app-emulation/qemu: multiple security fixes for 2.7.0-r5

  CVE-2016-7466, bug 594520
  CVE-2016-7907, bug 596048
  CVE-2016-7908, bug 596049
  CVE-2016-7909, bug 596048
  CVE-2016-7994, bug 596738
  CVE-2016-7994, bug 596738
  CVE-2016-8576, bug 596752
  CVE-2016-8577, bug 596776
  CVE-2016-8578, bug 596774
  CVE-2016-8668, bug 597110
  CVE-2016-8669, bug 597108
  CVE-2016-8669, bug 597108
  CVE-2016-8909, bug 598044
  CVE-2016-8910, bug 598046

Package-Manager: portage-2.3.0

14 files changed, 1189 insertions, 0 deletions

diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7907.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7907.patch
new file mode 100644
index 000000000000..34b095a51374
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7907.patch
@@ -0,0 +1,45 @@
+From: Prasad J Pandit <address@hidden>
+
+i.MX Fast Ethernet Controller uses buffer descriptors to manage
+data flow to/fro receive & transmit queues. While transmitting
+packets, it could continue to read buffer descriptors if a buffer
+descriptor has length of zero and has crafted values in bd.flags.
+Set an upper limit to number of buffer descriptors.
+
+Reported-by: Li Qiang <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/net/imx_fec.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+Update per
+  -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05284.html
+
+diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c
+index 1c415ab..1d74827 100644
+--- a/hw/net/imx_fec.c
++++ b/hw/net/imx_fec.c
+@@ -220,6 +220,8 @@ static const VMStateDescription vmstate_imx_eth = {
+ #define PHY_INT_PARFAULT            (1 << 2)
+ #define PHY_INT_AUTONEG_PAGE        (1 << 1)
+ 
++#define IMX_MAX_DESC                1024
++
+ static void imx_eth_update(IMXFECState *s);
+ 
+ /*
+@@ -402,12 +404,12 @@ static void imx_eth_update(IMXFECState *s)
+ 
+ static void imx_fec_do_tx(IMXFECState *s)
+ {
+-    int frame_size = 0;
++    int frame_size = 0, descnt = 0;
+     uint8_t frame[ENET_MAX_FRAME_SIZE];
+     uint8_t *ptr = frame;
+     uint32_t addr = s->tx_descriptor;
+ 
+-    while (1) {
++    while (descnt++ < IMX_MAX_DESC) {
+         IMXFECBufDesc bd;
+         int len;
+ 
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7908.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7908.patch
new file mode 100644
index 000000000000..16d072fe7928
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7908.patch
@@ -0,0 +1,52 @@
+From 070c4b92b8cd5390889716677a0b92444d6e087a Mon Sep 17 00:00:00 2001
+From: Prasad J Pandit <pjp@fedoraproject.org>
+Date: Thu, 22 Sep 2016 16:02:37 +0530
+Subject: [PATCH] net: mcf: limit buffer descriptor count
+
+ColdFire Fast Ethernet Controller uses buffer descriptors to manage
+data flow to/fro receive & transmit queues. While transmitting
+packets, it could continue to read buffer descriptors if a buffer
+descriptor has length of zero and has crafted values in bd.flags.
+Set upper limit to number of buffer descriptors.
+
+Reported-by: Li Qiang <liqiang6-s@360.cn>
+Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
+Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
+Signed-off-by: Jason Wang <jasowang@redhat.com>
+---
+ hw/net/mcf_fec.c |    5 +++--
+ 1 files changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c
+index 0ee8ad9..d31fea1 100644
+--- a/hw/net/mcf_fec.c
++++ b/hw/net/mcf_fec.c
+@@ -23,6 +23,7 @@ do { printf("mcf_fec: " fmt , ## __VA_ARGS__); } while (0)
+ #define DPRINTF(fmt, ...) do {} while(0)
+ #endif
+ 
++#define FEC_MAX_DESC 1024
+ #define FEC_MAX_FRAME_SIZE 2032
+ 
+ typedef struct {
+@@ -149,7 +150,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s)
+     uint32_t addr;
+     mcf_fec_bd bd;
+     int frame_size;
+-    int len;
++    int len, descnt = 0;
+     uint8_t frame[FEC_MAX_FRAME_SIZE];
+     uint8_t *ptr;
+ 
+@@ -157,7 +158,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s)
+     ptr = frame;
+     frame_size = 0;
+     addr = s->tx_descriptor;
+-    while (1) {
++    while (descnt++ < FEC_MAX_DESC) {
+         mcf_fec_read_bd(&bd, addr);
+         DPRINTF("tx_bd %x flags %04x len %d data %08x\n",
+                 addr, bd.flags, bd.length, bd.data);
+-- 
+1.7.0.4
+
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7909.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7909.patch
new file mode 100644
index 000000000000..8e6ecff8926c
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7909.patch
@@ -0,0 +1,32 @@
+From: Prasad J Pandit <address@hidden>
+
+The AMD PC-Net II emulator has set of control and status(CSR)
+registers. Of these, CSR76 and CSR78 hold receive and transmit
+descriptor ring length respectively. This ring length could range
+from 1 to 65535. Setting ring length to zero leads to an infinite
+loop in pcnet_rdra_addr. Add check to avoid it.
+
+Reported-by: Li Qiang <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/net/pcnet.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
+index 198a01f..3078de8 100644
+--- a/hw/net/pcnet.c
++++ b/hw/net/pcnet.c
+@@ -1429,8 +1429,11 @@ static void pcnet_csr_writew(PCNetState *s, uint32_t rap, uint32_t new_value)
+     case 47: /* POLLINT */
+     case 72:
+     case 74:
++        break;
+     case 76: /* RCVRL */
+     case 78: /* XMTRL */
++        val = (val > 0) ? val : 512;
++        break;
+     case 112:
+        if (CSR_STOP(s) || CSR_SPND(s))
+            break;
+-- 
+2.5.5
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-1.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-1.patch
new file mode 100644
index 000000000000..6fe77f367da5
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-1.patch
@@ -0,0 +1,25 @@
+From: Li Qiang <address@hidden>
+
+In virtio gpu resource create dispatch, if the pixman format is zero
+it doesn't free the resource object allocated previously. Thus leading
+a host memory leak issue. This patch avoid this.
+
+Signed-off-by: Li Qiang <address@hidden>
+---
+ hw/display/virtio-gpu.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
+index 7fe6ed8..5b6d17b 100644
+--- a/hw/display/virtio-gpu.c
++++ b/hw/display/virtio-gpu.c
+@@ -333,6 +333,7 @@ static void virtio_gpu_resource_create_2d(VirtIOGPU *g,
+         qemu_log_mask(LOG_GUEST_ERROR,
+                       "%s: host couldn't handle guest format %d\n",
+                       __func__, c2d.format);
++        g_free(res);
+         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
+         return;
+     }
+-- 
+1.8.3.1
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-2.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-2.patch
new file mode 100644
index 000000000000..dce1b2b2a326
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-7994-2.patch
@@ -0,0 +1,26 @@
+From: Li Qiang <address@hidden>
+
+While processing isochronous transfer descriptors(iTD), if the page
+select(PG) field value is out of bands it will return. In this
+situation the ehci's sg list doesn't be freed thus leading a memory
+leak issue. This patch avoid this.
+
+Signed-off-by: Li Qiang <address@hidden>
+---
+ hw/usb/hcd-ehci.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
+index b093db7..f4ece9a 100644
+--- a/hw/usb/hcd-ehci.c
++++ b/hw/usb/hcd-ehci.c
+@@ -1426,6 +1426,7 @@ static int ehci_process_itd(EHCIState *ehci,
+             if (off + len > 4096) {
+                 /* transfer crosses page border */
+                 if (pg == 6) {
++                    qemu_sglist_destroy(&ehci->isgl);
+                     return -1;  /* avoid page pg + 1 */
+                 }
+                 ptr2 = (itd->bufptr[pg + 1] & ITD_BUFPTR_MASK);
+-- 
+1.8.3.1
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch
new file mode 100644
index 000000000000..9617cd5dc880
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch
@@ -0,0 +1,61 @@
+From 20009bdaf95d10bf748fa69b104672d3cfaceddf Mon Sep 17 00:00:00 2001
+From: Gerd Hoffmann <address@hidden>
+Date: Fri, 7 Oct 2016 10:15:29 +0200
+Subject: [PATCH] xhci: limit the number of link trbs we are willing to process
+
+Signed-off-by: Gerd Hoffmann <address@hidden>
+---
+ hw/usb/hcd-xhci.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
+index 726435c..ee4fa48 100644
+--- a/hw/usb/hcd-xhci.c
++++ b/hw/usb/hcd-xhci.c
+@@ -54,6 +54,8 @@
+  * to the specs when it gets them */
+ #define ER_FULL_HACK
+ 
++#define TRB_LINK_LIMIT  4
++
+ #define LEN_CAP         0x40
+ #define LEN_OPER        (0x400 + 0x10 * MAXPORTS)
+ #define LEN_RUNTIME     ((MAXINTRS + 1) * 0x20)
+@@ -1000,6 +1002,7 @@ static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
+                                dma_addr_t *addr)
+ {
+     PCIDevice *pci_dev = PCI_DEVICE(xhci);
++    uint32_t link_cnt = 0;
+ 
+     while (1) {
+         TRBType type;
+@@ -1026,6 +1029,9 @@ static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
+             ring->dequeue += TRB_SIZE;
+             return type;
+         } else {
++            if (++link_cnt > TRB_LINK_LIMIT) {
++                return 0;
++            }
+             ring->dequeue = xhci_mask64(trb->parameter);
+             if (trb->control & TRB_LK_TC) {
+                 ring->ccs = !ring->ccs;
+@@ -1043,6 +1049,7 @@ static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
+     bool ccs = ring->ccs;
+     /* hack to bundle together the two/three TDs that make a setup transfer */
+     bool control_td_set = 0;
++    uint32_t link_cnt = 0;
+ 
+     while (1) {
+         TRBType type;
+@@ -1058,6 +1065,9 @@ static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
+         type = TRB_TYPE(trb);
+ 
+         if (type == TR_LINK) {
++            if (++link_cnt > TRB_LINK_LIMIT) {
++                return -length;
++            }
+             dequeue = xhci_mask64(trb.parameter);
+             if (trb.control & TRB_LK_TC) {
+                 ccs = !ccs;
+-- 
+1.8.3.1
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8577.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8577.patch
new file mode 100644
index 000000000000..8c295802c8ae
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8577.patch
@@ -0,0 +1,34 @@
+From: Li Qiang <address@hidden>
+
+In 9pfs read dispatch function, it doesn't free two QEMUIOVector
+object thus causing potential memory leak. This patch avoid this.
+
+Signed-off-by: Li Qiang <address@hidden>
+---
+ hw/9pfs/9p.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
+index 119ee58..543a791 100644
+--- a/hw/9pfs/9p.c
++++ b/hw/9pfs/9p.c
+@@ -1826,14 +1826,15 @@ static void v9fs_read(void *opaque)
+             if (len < 0) {
+                 /* IO error return the error */
+                 err = len;
+-                goto out;
++                goto out_free_iovec;
+             }
+         } while (count < max_count && len > 0);
+         err = pdu_marshal(pdu, offset, "d", count);
+         if (err < 0) {
+-            goto out;
++            goto out_free_iovec;
+         }
+         err += offset + count;
++out_free_iovec:
+         qemu_iovec_destroy(&qiov);
+         qemu_iovec_destroy(&qiov_full);
+     } else if (fidp->fid_type == P9_FID_XATTR) {
+-- 
+1.8.3.1
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8578.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8578.patch
new file mode 100644
index 000000000000..74eee7e4d94d
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8578.patch
@@ -0,0 +1,58 @@
+From ba42ebb863ab7d40adc79298422ed9596df8f73a Mon Sep 17 00:00:00 2001
+From: Li Qiang <liqiang6-s@360.cn>
+Date: Mon, 17 Oct 2016 14:13:58 +0200
+Subject: [PATCH] 9pfs: allocate space for guest originated empty strings
+
+If a guest sends an empty string paramater to any 9P operation, the current
+code unmarshals it into a V9fsString equal to { .size = 0, .data = NULL }.
+
+This is unfortunate because it can cause NULL pointer dereference to happen
+at various locations in the 9pfs code. And we don't want to check str->data
+everywhere we pass it to strcmp() or any other function which expects a
+dereferenceable pointer.
+
+This patch enforces the allocation of genuine C empty strings instead, so
+callers don't have to bother.
+
+Out of all v9fs_iov_vunmarshal() users, only v9fs_xattrwalk() checks if
+the returned string is empty. It now uses v9fs_string_size() since
+name.data cannot be NULL anymore.
+
+Signed-off-by: Li Qiang <liqiang6-s@360.cn>
+[groug, rewritten title and changelog,
+ fix empty string check in v9fs_xattrwalk()]
+Signed-off-by: Greg Kurz <groug@kaod.org>
+---
+ fsdev/9p-iov-marshal.c | 2 +-
+ hw/9pfs/9p.c           | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/fsdev/9p-iov-marshal.c b/fsdev/9p-iov-marshal.c
+index 663cad5..1d16f8d 100644
+--- a/fsdev/9p-iov-marshal.c
++++ b/fsdev/9p-iov-marshal.c
+@@ -125,7 +125,7 @@ ssize_t v9fs_iov_vunmarshal(struct iovec *out_sg, int out_num, size_t offset,
+                 str->data = g_malloc(str->size + 1);
+                 copied = v9fs_unpack(str->data, out_sg, out_num, offset,
+                                      str->size);
+-                if (copied > 0) {
++                if (copied >= 0) {
+                     str->data[str->size] = 0;
+                 } else {
+                     v9fs_string_free(str);
+diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
+index 119ee58..39a7e1d 100644
+--- a/hw/9pfs/9p.c
++++ b/hw/9pfs/9p.c
+@@ -3174,7 +3174,7 @@ static void v9fs_xattrwalk(void *opaque)
+         goto out;
+     }
+     v9fs_path_copy(&xattr_fidp->path, &file_fidp->path);
+-    if (name.data == NULL) {
++    if (!v9fs_string_size(&name)) {
+         /*
+          * listxattr request. Get the size first
+          */
+-- 
+2.7.3
+
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8668.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8668.patch
new file mode 100644
index 000000000000..a27d3a6fb196
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8668.patch
@@ -0,0 +1,30 @@
+From: Prasad J Pandit <address@hidden>
+
+Rocker network switch emulator has test registers to help debug
+DMA operations. While testing host DMA access, a buffer address
+is written to register 'TEST_DMA_ADDR' and its size is written to
+register 'TEST_DMA_SIZE'. When performing TEST_DMA_CTRL_INVERT
+test, if DMA buffer size was greater than 'INT_MAX', it leads to
+an invalid buffer access. Limit the DMA buffer size to avoid it.
+
+Reported-by: Huawei PSIRT <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/net/rocker/rocker.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c
+index 30f2ce4..e9d215a 100644
+--- a/hw/net/rocker/rocker.c
++++ b/hw/net/rocker/rocker.c
+@@ -860,7 +860,7 @@ static void rocker_io_writel(void *opaque, hwaddr addr, uint32_t val)
+         rocker_msix_irq(r, val);
+         break;
+     case ROCKER_TEST_DMA_SIZE:
+-        r->test_dma_size = val;
++        r->test_dma_size = val & 0xFFFF;
+         break;
+     case ROCKER_TEST_DMA_ADDR + 4:
+         r->test_dma_addr = ((uint64_t)val) << 32 | r->lower32;
+-- 
+2.5.5
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-1.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-1.patch
new file mode 100644
index 000000000000..457f022d596b
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-1.patch
@@ -0,0 +1,29 @@
+From: Prasad J Pandit <address@hidden>
+
+The JAZZ RC4030 chipset emulator has a periodic timer and
+associated interval reload register. The reload value is used
+as divider when computing timer's next tick value. If reload
+value is large, it could lead to divide by zero error. Limit
+the interval reload value to avoid it.
+
+Reported-by: Huawei PSIRT <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/dma/rc4030.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/dma/rc4030.c b/hw/dma/rc4030.c
+index 2f2576f..c1b4997 100644
+--- a/hw/dma/rc4030.c
++++ b/hw/dma/rc4030.c
+@@ -460,7 +460,7 @@ static void rc4030_write(void *opaque, hwaddr addr, uint64_t data,
+         break;
+     /* Interval timer reload */
+     case 0x0228:
+-        s->itr = val;
++        s->itr = val & 0x01FF;
+         qemu_irq_lower(s->timer_irq);
+         set_next_tick(s);
+         break;
+-- 
+2.5.5
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-2.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-2.patch
new file mode 100644
index 000000000000..23393b7d590d
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8669-2.patch
@@ -0,0 +1,34 @@
+From: Prasad J Pandit <address@hidden>
+
+16550A UART device uses an oscillator to generate frequencies
+(baud base), which decide communication speed. This speed could
+be changed by dividing it by a divider. If the divider is
+greater than the baud base, speed is set to zero, leading to a
+divide by zero error. Add check to avoid it.
+
+Reported-by: Huawei PSIRT <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/char/serial.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+Update per
+  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02400.html
+
+diff --git a/hw/char/serial.c b/hw/char/serial.c
+index 3442f47..eec72b7 100644
+--- a/hw/char/serial.c
++++ b/hw/char/serial.c
+@@ -153,8 +153,9 @@ static void serial_update_parameters(SerialState *s)
+     int speed, parity, data_bits, stop_bits, frame_size;
+     QEMUSerialSetParams ssp;
+ 
+-    if (s->divider == 0)
++    if (s->divider == 0 || s->divider > s->baudbase) {
+         return;
++    }
+ 
+     /* Start bit. */
+     frame_size = 1;
+-- 
+2.5.5
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8909.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8909.patch
new file mode 100644
index 000000000000..ed6613f89660
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8909.patch
@@ -0,0 +1,31 @@
+From: Prasad J Pandit <address@hidden>
+
+Intel HDA emulator uses stream of buffers during DMA data
+transfers. Each entry has buffer length and buffer pointer
+position, which are used to derive bytes to 'copy'. If this
+length and buffer pointer were to be same, 'copy' could be
+set to zero(0), leading to an infinite loop. Add check to
+avoid it.
+
+Reported-by: Huawei PSIRT <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/audio/intel-hda.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c
+index cd95340..537face 100644
+--- a/hw/audio/intel-hda.c
++++ b/hw/audio/intel-hda.c
+@@ -416,7 +416,8 @@ static bool intel_hda_xfer(HDACodecDevice *dev, uint32_t stnr, bool output,
+     }
+ 
+     left = len;
+-    while (left > 0) {
++    s = st->bentries;
++    while (left > 0 && s-- > 0) {
+         copy = left;
+         if (copy > st->bsize - st->lpib)
+             copy = st->bsize - st->lpib;
+-- 
+2.7.4
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8910.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8910.patch
new file mode 100644
index 000000000000..c93f79631fcb
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8910.patch
@@ -0,0 +1,29 @@
+From: Prasad J Pandit <address@hidden>
+
+RTL8139 ethernet controller in C+ mode supports multiple
+descriptor rings, each with maximum of 64 descriptors. While
+processing transmit descriptor ring in 'rtl8139_cplus_transmit',
+it does not limit the descriptor count and runs forever. Add
+check to avoid it.
+
+Reported-by: Andrew Henderson <address@hidden>
+Signed-off-by: Prasad J Pandit <address@hidden>
+---
+ hw/net/rtl8139.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
+index 3345bc6..f05e59c 100644
+--- a/hw/net/rtl8139.c
++++ b/hw/net/rtl8139.c
+@@ -2350,7 +2350,7 @@ static void rtl8139_cplus_transmit(RTL8139State *s)
+ {
+     int txcount = 0;
+ 
+-    while (rtl8139_cplus_transmit_one(s))
++    while (txcount < 64 && rtl8139_cplus_transmit_one(s))
+     {
+         ++txcount;
+     }
+-- 
+2.7.4
diff --git a/app-emulation/qemu/qemu-2.7.0-r5.ebuild b/app-emulation/qemu/qemu-2.7.0-r5.ebuild
new file mode 100644
index 000000000000..cece751794b5
--- /dev/null
+++ b/app-emulation/qemu/qemu-2.7.0-r5.ebuild
@@ -0,0 +1,703 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI="5"
+
+PYTHON_COMPAT=( python2_7 )
+PYTHON_REQ_USE="ncurses,readline"
+
+PLOCALES="bg de_DE fr_FR hu it tr zh_CN"
+
+inherit eutils flag-o-matic linux-info toolchain-funcs multilib python-r1 \
+	user udev fcaps readme.gentoo-r1 pax-utils l10n
+
+if [[ ${PV} = *9999* ]]; then
+	EGIT_REPO_URI="git://git.qemu.org/qemu.git"
+	inherit git-2
+	SRC_URI=""
+else
+	SRC_URI="http://wiki.qemu-project.org/download/${P}.tar.bz2"
+	KEYWORDS="~amd64 ~arm64 ~ppc ~ppc64 ~x86 ~x86-fbsd"
+fi
+
+DESCRIPTION="QEMU + Kernel-based Virtual Machine userland tools"
+HOMEPAGE="http://www.qemu.org http://www.linux-kvm.org"
+
+LICENSE="GPL-2 LGPL-2 BSD-2"
+SLOT="0"
+IUSE="accessibility +aio alsa bluetooth bzip2 +caps +curl debug +fdt glusterfs \
+gnutls gtk gtk2 infiniband iscsi +jpeg \
+kernel_linux kernel_FreeBSD lzo ncurses nfs nls numa opengl +pin-upstream-blobs
++png pulseaudio python \
+rbd sasl +seccomp sdl sdl2 selinux smartcard snappy spice ssh static static-softmmu
+static-user systemtap tci test +threads usb usbredir +uuid vde +vhost-net \
+virgl virtfs +vnc vte xattr xen xfs"
+
+COMMON_TARGETS="aarch64 alpha arm cris i386 m68k microblaze microblazeel mips
+mips64 mips64el mipsel or32 ppc ppc64 s390x sh4 sh4eb sparc sparc64 unicore32
+x86_64"
+IUSE_SOFTMMU_TARGETS="${COMMON_TARGETS} lm32 moxie ppcemb tricore xtensa xtensaeb"
+IUSE_USER_TARGETS="${COMMON_TARGETS} armeb mipsn32 mipsn32el ppc64abi32 ppc64le sparc32plus tilegx"
+
+use_softmmu_targets=$(printf ' qemu_softmmu_targets_%s' ${IUSE_SOFTMMU_TARGETS})
+use_user_targets=$(printf ' qemu_user_targets_%s' ${IUSE_USER_TARGETS})
+IUSE+=" ${use_softmmu_targets} ${use_user_targets}"
+
+# Allow no targets to be built so that people can get a tools-only build.
+# Block USE flag configurations known to not work.
+REQUIRED_USE="${PYTHON_REQUIRED_USE}
+	gtk2? ( gtk )
+	qemu_softmmu_targets_arm? ( fdt )
+	qemu_softmmu_targets_microblaze? ( fdt )
+	qemu_softmmu_targets_ppc? ( fdt )
+	qemu_softmmu_targets_ppc64? ( fdt )
+	sdl2? ( sdl )
+	static? ( static-softmmu static-user )
+	static-softmmu? ( !alsa !pulseaudio !bluetooth !opengl !gtk !gtk2 )
+	virtfs? ( xattr )
+	vte? ( gtk )"
+
+# Yep, you need both libcap and libcap-ng since virtfs only uses libcap.
+#
+# The attr lib isn't always linked in (although the USE flag is always
+# respected).  This is because qemu supports using the C library's API
+# when available rather than always using the extranl library.
+#
+# Older versions of gnutls are supported, but it's simpler to just require
+# the latest versions.  This is also why we require nettle.
+#
+# TODO: Split out tools deps into another var.  e.g. bzip2 is only used by
+# system binaries and tools, not user binaries.
+COMMON_LIB_DEPEND=">=dev-libs/glib-2.0[static-libs(+)]
+	dev-libs/libpcre[static-libs(+)]
+	sys-libs/zlib[static-libs(+)]
+	bzip2? ( app-arch/bzip2[static-libs(+)] )
+	xattr? ( sys-apps/attr[static-libs(+)] )"
+SOFTMMU_LIB_DEPEND="${COMMON_LIB_DEPEND}
+	>=x11-libs/pixman-0.28.0[static-libs(+)]
+	accessibility? ( app-accessibility/brltty[static-libs(+)] )
+	aio? ( dev-libs/libaio[static-libs(+)] )
+	alsa? ( >=media-libs/alsa-lib-1.0.13 )
+	bluetooth? ( net-wireless/bluez )
+	caps? ( sys-libs/libcap-ng[static-libs(+)] )
+	curl? ( >=net-misc/curl-7.15.4[static-libs(+)] )
+	fdt? ( >=sys-apps/dtc-1.4.0[static-libs(+)] )
+	glusterfs? ( >=sys-cluster/glusterfs-3.4.0[static-libs(+)] )
+	gnutls? (
+		dev-libs/nettle:=[static-libs(+)]
+		>=net-libs/gnutls-3.0:=[static-libs(+)]
+	)
+	gtk? (
+		gtk2? (
+			x11-libs/gtk+:2
+			vte? ( x11-libs/vte:0 )
+		)
+		!gtk2? (
+			x11-libs/gtk+:3
+			vte? ( x11-libs/vte:2.90 )
+		)
+	)
+	infiniband? ( sys-fabric/librdmacm:=[static-libs(+)] )
+	iscsi? ( net-libs/libiscsi )
+	jpeg? ( virtual/jpeg:0=[static-libs(+)] )
+	lzo? ( dev-libs/lzo:2[static-libs(+)] )
+	ncurses? ( sys-libs/ncurses:0=[static-libs(+)] )
+	nfs? ( >=net-fs/libnfs-1.9.3[static-libs(+)] )
+	numa? ( sys-process/numactl[static-libs(+)] )
+	opengl? (
+		virtual/opengl
+		media-libs/libepoxy[static-libs(+)]
+		media-libs/mesa[static-libs(+)]
+		media-libs/mesa[egl,gles2,gbm]
+	)
+	png? ( media-libs/libpng:0=[static-libs(+)] )
+	pulseaudio? ( media-sound/pulseaudio )
+	rbd? ( sys-cluster/ceph[static-libs(+)] )
+	sasl? ( dev-libs/cyrus-sasl[static-libs(+)] )
+	sdl? (
+		!sdl2? (
+			media-libs/libsdl[X]
+			>=media-libs/libsdl-1.2.11[static-libs(+)]
+		)
+		sdl2? (
+			media-libs/libsdl2[X]
+			media-libs/libsdl2[static-libs(+)]
+		)
+	)
+	seccomp? ( >=sys-libs/libseccomp-2.1.0[static-libs(+)] )
+	smartcard? ( >=app-emulation/libcacard-2.5.0[static-libs(+)] )
+	snappy? ( app-arch/snappy[static-libs(+)] )
+	spice? (
+		>=app-emulation/spice-protocol-0.12.3
+		>=app-emulation/spice-0.12.0[static-libs(+)]
+	)
+	ssh? ( >=net-libs/libssh2-1.2.8[static-libs(+)] )
+	usb? ( >=virtual/libusb-1-r2[static-libs(+)] )
+	usbredir? ( >=sys-apps/usbredir-0.6[static-libs(+)] )
+	uuid? ( >=sys-apps/util-linux-2.16.0[static-libs(+)] )
+	vde? ( net-misc/vde[static-libs(+)] )
+	virgl? ( media-libs/virglrenderer[static-libs(+)] )
+	virtfs? ( sys-libs/libcap )
+	xfs? ( sys-fs/xfsprogs[static-libs(+)] )"
+USER_LIB_DEPEND="${COMMON_LIB_DEPEND}"
+X86_FIRMWARE_DEPEND="
+	>=sys-firmware/ipxe-1.0.0_p20130624
+	pin-upstream-blobs? (
+		~sys-firmware/seabios-1.8.2
+		~sys-firmware/sgabios-0.1_pre8
+		~sys-firmware/vgabios-0.7a
+	)
+	!pin-upstream-blobs? (
+		sys-firmware/seabios
+		sys-firmware/sgabios
+		sys-firmware/vgabios
+	)"
+CDEPEND="
+	!static-softmmu? ( $(printf "%s? ( ${SOFTMMU_LIB_DEPEND//\[static-libs(+)]} ) " ${use_softmmu_targets}) )
+	!static-user? ( $(printf "%s? ( ${USER_LIB_DEPEND//\[static-libs(+)]} ) " ${use_user_targets}) )
+	qemu_softmmu_targets_i386? ( ${X86_FIRMWARE_DEPEND} )
+	qemu_softmmu_targets_x86_64? ( ${X86_FIRMWARE_DEPEND} )
+	python? ( ${PYTHON_DEPS} )
+	systemtap? ( dev-util/systemtap )
+	xen? ( app-emulation/xen-tools:= )"
+DEPEND="${CDEPEND}
+	dev-lang/perl
+	=dev-lang/python-2*
+	sys-apps/texinfo
+	virtual/pkgconfig
+	kernel_linux? ( >=sys-kernel/linux-headers-2.6.35 )
+	gtk? ( nls? ( sys-devel/gettext ) )
+	static-softmmu? ( $(printf "%s? ( ${SOFTMMU_LIB_DEPEND} ) " ${use_softmmu_targets}) )
+	static-user? ( $(printf "%s? ( ${USER_LIB_DEPEND} ) " ${use_user_targets}) )
+	test? (
+		dev-libs/glib[utils]
+		sys-devel/bc
+	)"
+RDEPEND="${CDEPEND}
+	selinux? ( sec-policy/selinux-qemu )
+"
+
+STRIP_MASK="/usr/share/qemu/palcode-clipper"
+
+QA_PREBUILT="
+	usr/share/qemu/openbios-ppc
+	usr/share/qemu/openbios-sparc64
+	usr/share/qemu/openbios-sparc32
+	usr/share/qemu/palcode-clipper
+	usr/share/qemu/s390-ccw.img
+	usr/share/qemu/u-boot.e500
+"
+
+QA_WX_LOAD="usr/bin/qemu-i386
+	usr/bin/qemu-x86_64
+	usr/bin/qemu-alpha
+	usr/bin/qemu-arm
+	usr/bin/qemu-cris
+	usr/bin/qemu-m68k
+	usr/bin/qemu-microblaze
+	usr/bin/qemu-microblazeel
+	usr/bin/qemu-mips
+	usr/bin/qemu-mipsel
+	usr/bin/qemu-or32
+	usr/bin/qemu-ppc
+	usr/bin/qemu-ppc64
+	usr/bin/qemu-ppc64abi32
+	usr/bin/qemu-sh4
+	usr/bin/qemu-sh4eb
+	usr/bin/qemu-sparc
+	usr/bin/qemu-sparc64
+	usr/bin/qemu-armeb
+	usr/bin/qemu-sparc32plus
+	usr/bin/qemu-s390x
+	usr/bin/qemu-unicore32"
+
+DOC_CONTENTS="If you don't have kvm compiled into the kernel, make sure
+you have the kernel module loaded before running kvm. The easiest way to
+ensure that the kernel module is loaded is to load it on boot.\n
+For AMD CPUs the module is called 'kvm-amd'.\n
+For Intel CPUs the module is called 'kvm-intel'.\n
+Please review /etc/conf.d/modules for how to load these.\n\n
+Make sure your user is in the 'kvm' group\n
+Just run 'gpasswd -a <USER> kvm', then have <USER> re-login.\n\n
+For brand new installs, the default permissions on /dev/kvm might not let you
+access it.  You can tell udev to reset ownership/perms:\n
+udevadm trigger -c add /dev/kvm"
+
+qemu_support_kvm() {
+	if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386 \
+		use qemu_softmmu_targets_ppc || use qemu_softmmu_targets_ppc64 \
+		use qemu_softmmu_targets_s390x; then
+		return 0
+	fi
+
+	return 1
+}
+
+pkg_pretend() {
+	if use kernel_linux && kernel_is lt 2 6 25; then
+		eerror "This version of KVM requres a host kernel of 2.6.25 or higher."
+	elif use kernel_linux; then
+		if ! linux_config_exists; then
+			eerror "Unable to check your kernel for KVM support"
+		else
+			CONFIG_CHECK="~KVM ~TUN ~BRIDGE"
+			ERROR_KVM="You must enable KVM in your kernel to continue"
+			ERROR_KVM_AMD="If you have an AMD CPU, you must enable KVM_AMD in"
+			ERROR_KVM_AMD+=" your kernel configuration."
+			ERROR_KVM_INTEL="If you have an Intel CPU, you must enable"
+			ERROR_KVM_INTEL+=" KVM_INTEL in your kernel configuration."
+			ERROR_TUN="You will need the Universal TUN/TAP driver compiled"
+			ERROR_TUN+=" into your kernel or loaded as a module to use the"
+			ERROR_TUN+=" virtual network device if using -net tap."
+			ERROR_BRIDGE="You will also need support for 802.1d"
+			ERROR_BRIDGE+=" Ethernet Bridging for some network configurations."
+			use vhost-net && CONFIG_CHECK+=" ~VHOST_NET"
+			ERROR_VHOST_NET="You must enable VHOST_NET to have vhost-net"
+			ERROR_VHOST_NET+=" support"
+
+			if use amd64 || use x86 || use amd64-linux || use x86-linux; then
+				CONFIG_CHECK+=" ~KVM_AMD ~KVM_INTEL"
+			fi
+
+			use python && CONFIG_CHECK+=" ~DEBUG_FS"
+			ERROR_DEBUG_FS="debugFS support required for kvm_stat"
+
+			# Now do the actual checks setup above
+			check_extra_config
+		fi
+	fi
+
+	if grep -qs '/usr/bin/qemu-kvm' "${EROOT}"/etc/libvirt/qemu/*.xml; then
+		eerror "The kvm/qemu-kvm wrappers no longer exist, but your libvirt"
+		eerror "instances are still pointing to it.  Please update your"
+		eerror "configs in /etc/libvirt/qemu/ to use the -enable-kvm flag"
+		eerror "and the right system binary (e.g. qemu-system-x86_64)."
+		die "update your virt configs to not use qemu-kvm"
+	fi
+}
+
+pkg_setup() {
+	enewgroup kvm 78
+}
+
+# Sanity check to make sure target lists are kept up-to-date.
+check_targets() {
+	local var=$1 mak=$2
+	local detected sorted
+
+	pushd "${S}"/default-configs >/dev/null || die
+
+	# Force C locale until glibc is updated. #564936
+	detected=$(echo $(printf '%s\n' *-${mak}.mak | sed "s:-${mak}.mak::" | LC_COLLATE=C sort -u))
+	sorted=$(echo $(printf '%s\n' ${!var} | LC_COLLATE=C sort -u))
+	if [[ ${sorted} != "${detected}" ]] ; then
+		eerror "The ebuild needs to be kept in sync."
+		eerror "${var}: ${sorted}"
+		eerror "$(printf '%-*s' ${#var} configure): ${detected}"
+		die "sync ${var} to the list of targets"
+	fi
+
+	popd >/dev/null
+}
+
+handle_locales() {
+	# Make sure locale list is kept up-to-date.
+	local detected sorted
+	detected=$(echo $(cd po && printf '%s\n' *.po | grep -v messages.po | sed 's:.po$::' | sort -u))
+	sorted=$(echo $(printf '%s\n' ${PLOCALES} | sort -u))
+	if [[ ${sorted} != "${detected}" ]] ; then
+		eerror "The ebuild needs to be kept in sync."
+		eerror "PLOCALES: ${sorted}"
+		eerror " po/*.po: ${detected}"
+		die "sync PLOCALES"
+	fi
+
+	# Deal with selective install of locales.
+	if use nls ; then
+		# Delete locales the user does not want. #577814
+		rm_loc() { rm po/$1.po || die; }
+		l10n_for_each_disabled_locale_do rm_loc
+	else
+		# Cheap hack to disable gettext .mo generation.
+		rm -f po/*.po
+	fi
+}
+
+src_prepare() {
+	check_targets IUSE_SOFTMMU_TARGETS softmmu
+	check_targets IUSE_USER_TARGETS linux-user
+
+	# Alter target makefiles to accept CFLAGS set via flag-o
+	sed -i -r \
+		-e 's/^(C|OP_C|HELPER_C)FLAGS=/\1FLAGS+=/' \
+		Makefile Makefile.target || die
+
+	epatch "${FILESDIR}"/${PN}-2.5.0-cflags.patch
+	epatch "${FILESDIR}"/${PN}-2.5.0-sysmacros.patch
+
+	epatch "${FILESDIR}"/${P}-CVE-2016-6836.patch   # bug 591242
+	epatch "${FILESDIR}"/${P}-CVE-2016-7155.patch   # bug 593034
+	epatch "${FILESDIR}"/${P}-CVE-2016-7156.patch   # bug 593036
+	epatch "${FILESDIR}"/${P}-CVE-2016-7157-1.patch # bug 593038
+	epatch "${FILESDIR}"/${P}-CVE-2016-7157-2.patch # bug 593038
+	epatch "${FILESDIR}"/${P}-CVE-2016-7170.patch   # bug 593284
+	epatch "${FILESDIR}"/${P}-CVE-2016-7421.patch   # bug 593950
+	epatch "${FILESDIR}"/${P}-CVE-2016-7422.patch   # bug 593956
+	epatch "${FILESDIR}"/${P}-CVE-2016-7423.patch   # bug 594368
+	epatch "${FILESDIR}"/${P}-CVE-2016-7466.patch   # bug 594520
+	epatch "${FILESDIR}"/${P}-CVE-2016-7907.patch   # bug 596048
+	epatch "${FILESDIR}"/${P}-CVE-2016-7908.patch   # bug 596049
+	epatch "${FILESDIR}"/${P}-CVE-2016-7909.patch   # bug 596048
+	epatch "${FILESDIR}"/${P}-CVE-2016-7994-1.patch # bug 596738
+	epatch "${FILESDIR}"/${P}-CVE-2016-7994-2.patch # bug 596738
+	epatch "${FILESDIR}"/${P}-CVE-2016-8576.patch   # bug 596752
+	epatch "${FILESDIR}"/${P}-CVE-2016-8577.patch   # bug 596776
+	epatch "${FILESDIR}"/${P}-CVE-2016-8578.patch   # bug 596774
+	epatch "${FILESDIR}"/${P}-CVE-2016-8668.patch   # bug 597110
+	epatch "${FILESDIR}"/${P}-CVE-2016-8669-1.patch # bug 597108
+	epatch "${FILESDIR}"/${P}-CVE-2016-8669-2.patch # bug 597108
+	epatch "${FILESDIR}"/${P}-CVE-2016-8909.patch   # bug 598044
+	epatch "${FILESDIR}"/${P}-CVE-2016-8910.patch   # bug 598046
+
+	# Fix ld and objcopy being called directly
+	tc-export AR LD OBJCOPY
+
+	# Verbose builds
+	MAKEOPTS+=" V=1"
+
+	epatch_user
+
+	# Run after we've applied all patches.
+	handle_locales
+}
+
+##
+# configures qemu based on the build directory and the build type
+# we are using.
+#
+qemu_src_configure() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local buildtype=$1
+	local builddir="${S}/${buildtype}-build"
+	local static_flag="static-${buildtype}"
+
+	mkdir "${builddir}"
+
+	local conf_opts=(
+		--prefix=/usr
+		--sysconfdir=/etc
+		--libdir=/usr/$(get_libdir)
+		--docdir=/usr/share/doc/${PF}/html
+		--disable-bsd-user
+		--disable-guest-agent
+		--disable-strip
+		--disable-werror
+		# We support gnutls/nettle for crypto operations.  It is possible
+		# to use gcrypt when gnutls/nettle are disabled (but not when they
+		# are enabled), but it's not really worth the hassle.  Disable it
+		# all the time to avoid automatically detecting it. #568856
+		--disable-gcrypt
+		--python="${PYTHON}"
+		--cc="$(tc-getCC)"
+		--cxx="$(tc-getCXX)"
+		--host-cc="$(tc-getBUILD_CC)"
+		$(use_enable debug debug-info)
+		$(use_enable debug debug-tcg)
+		--enable-docs
+		$(use_enable tci tcg-interpreter)
+		$(use_enable xattr attr)
+	)
+
+	# Disable options not used by user targets as the default configure
+	# options will autoprobe and try to link in a bunch of unused junk.
+	conf_softmmu() {
+		if [[ ${buildtype} == "user" ]] ; then
+			echo "--disable-${2:-$1}"
+		else
+			use_enable "$@"
+		fi
+	}
+	conf_opts+=(
+		$(conf_softmmu accessibility brlapi)
+		$(conf_softmmu aio linux-aio)
+		$(conf_softmmu bzip2)
+		$(conf_softmmu bluetooth bluez)
+		$(conf_softmmu caps cap-ng)
+		$(conf_softmmu curl)
+		$(conf_softmmu fdt)
+		$(conf_softmmu glusterfs)
+		$(conf_softmmu gnutls)
+		$(conf_softmmu gnutls nettle)
+		$(conf_softmmu gtk)
+		$(conf_softmmu infiniband rdma)
+		$(conf_softmmu iscsi libiscsi)
+		$(conf_softmmu jpeg vnc-jpeg)
+		$(conf_softmmu kernel_linux kvm)
+		$(conf_softmmu lzo)
+		$(conf_softmmu ncurses curses)
+		$(conf_softmmu nfs libnfs)
+		$(conf_softmmu numa)
+		$(conf_softmmu opengl)
+		$(conf_softmmu png vnc-png)
+		$(conf_softmmu rbd)
+		$(conf_softmmu sasl vnc-sasl)
+		$(conf_softmmu sdl)
+		$(conf_softmmu seccomp)
+		$(conf_softmmu smartcard)
+		$(conf_softmmu snappy)
+		$(conf_softmmu spice)
+		$(conf_softmmu ssh libssh2)
+		$(conf_softmmu usb libusb)
+		$(conf_softmmu usbredir usb-redir)
+		$(conf_softmmu uuid)
+		$(conf_softmmu vde)
+		$(conf_softmmu vhost-net)
+		$(conf_softmmu virgl virglrenderer)
+		$(conf_softmmu virtfs)
+		$(conf_softmmu vnc)
+		$(conf_softmmu vte)
+		$(conf_softmmu xen)
+		$(conf_softmmu xen xen-pci-passthrough)
+		$(conf_softmmu xfs xfsctl)
+	)
+
+	case ${buildtype} in
+	user)
+		conf_opts+=(
+			--enable-linux-user
+			--disable-system
+			--disable-blobs
+			--disable-tools
+		)
+		;;
+	softmmu)
+		# audio options
+		local audio_opts="oss"
+		use alsa && audio_opts="alsa,${audio_opts}"
+		use sdl && audio_opts="sdl,${audio_opts}"
+		use pulseaudio && audio_opts="pa,${audio_opts}"
+
+		conf_opts+=(
+			--disable-linux-user
+			--enable-system
+			--with-system-pixman
+			--audio-drv-list="${audio_opts}"
+		)
+		use gtk && conf_opts+=( --with-gtkabi=$(usex gtk2 2.0 3.0) )
+		use sdl && conf_opts+=( --with-sdlabi=$(usex sdl2 2.0 1.2) )
+		;;
+	tools)
+		conf_opts+=(
+			--disable-linux-user
+			--disable-system
+			--disable-blobs
+			$(use_enable bzip2)
+		)
+		static_flag="static"
+		;;
+	esac
+
+	local targets="${buildtype}_targets"
+	[[ -n ${targets} ]] && conf_opts+=( --target-list="${!targets}" )
+
+	# Add support for SystemTAP
+	use systemtap && conf_opts+=( --enable-trace-backend=dtrace )
+
+	# We always want to attempt to build with PIE support as it results
+	# in a more secure binary. But it doesn't work with static or if
+	# the current GCC doesn't have PIE support.
+	if use ${static_flag}; then
+		conf_opts+=( --static --disable-pie )
+	else
+		gcc-specs-pie && conf_opts+=( --enable-pie )
+	fi
+
+	echo "../configure ${conf_opts[*]}"
+	cd "${builddir}"
+	../configure "${conf_opts[@]}" || die "configure failed"
+
+	# FreeBSD's kernel does not support QEMU assigning/grabbing
+	# host USB devices yet
+	use kernel_FreeBSD && \
+		sed -i -E -e "s|^(HOST_USB=)bsd|\1stub|" "${S}"/config-host.mak
+}
+
+src_configure() {
+	local target
+
+	python_setup
+
+	softmmu_targets= softmmu_bins=()
+	user_targets= user_bins=()
+
+	for target in ${IUSE_SOFTMMU_TARGETS} ; do
+		if use "qemu_softmmu_targets_${target}"; then
+			softmmu_targets+=",${target}-softmmu"
+			softmmu_bins+=( "qemu-system-${target}" )
+		fi
+	done
+
+	for target in ${IUSE_USER_TARGETS} ; do
+		if use "qemu_user_targets_${target}"; then
+			user_targets+=",${target}-linux-user"
+			user_bins+=( "qemu-${target}" )
+		fi
+	done
+
+	softmmu_targets=${softmmu_targets#,}
+	user_targets=${user_targets#,}
+
+	[[ -n ${softmmu_targets} ]] && qemu_src_configure "softmmu"
+	[[ -n ${user_targets}    ]] && qemu_src_configure "user"
+	[[ -z ${softmmu_targets}${user_targets} ]] && qemu_src_configure "tools"
+}
+
+src_compile() {
+	if [[ -n ${user_targets} ]]; then
+		cd "${S}/user-build"
+		default
+	fi
+
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		default
+	fi
+
+	if [[ -z ${softmmu_targets}${user_targets} ]]; then
+		cd "${S}/tools-build"
+		default
+	fi
+}
+
+src_test() {
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		pax-mark m */qemu-system-* #515550
+		emake -j1 check
+		emake -j1 check-report.html
+	fi
+}
+
+qemu_python_install() {
+	python_domodule "${S}/scripts/qmp/qmp.py"
+
+	python_doscript "${S}/scripts/kvm/vmxcap"
+	python_doscript "${S}/scripts/qmp/qmp-shell"
+	python_doscript "${S}/scripts/qmp/qemu-ga-client"
+}
+
+src_install() {
+	if [[ -n ${user_targets} ]]; then
+		cd "${S}/user-build"
+		emake DESTDIR="${ED}" install
+
+		# Install binfmt handler init script for user targets
+		newinitd "${FILESDIR}/qemu-binfmt.initd-r1" qemu-binfmt
+	fi
+
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		emake DESTDIR="${ED}" install
+
+		# This might not exist if the test failed. #512010
+		[[ -e check-report.html ]] && dohtml check-report.html
+
+		if use kernel_linux; then
+			udev_dorules "${FILESDIR}"/65-kvm.rules
+		fi
+
+		if use python; then
+			python_foreach_impl qemu_python_install
+		fi
+	fi
+
+	if [[ -z ${softmmu_targets}${user_targets} ]]; then
+		cd "${S}/tools-build"
+		emake DESTDIR="${ED}" install
+	fi
+
+	# Disable mprotect on the qemu binaries as they use JITs to be fast #459348
+	pushd "${ED}"/usr/bin >/dev/null
+	pax-mark m "${softmmu_bins[@]}" "${user_bins[@]}"
+	popd >/dev/null
+
+	# Install config file example for qemu-bridge-helper
+	insinto "/etc/qemu"
+	doins "${FILESDIR}/bridge.conf"
+
+	# Remove the docdir placed qmp-commands.txt
+	mv "${ED}/usr/share/doc/${PF}/html/qmp-commands.txt" "${S}/docs/" || die
+
+	cd "${S}"
+	dodoc Changelog MAINTAINERS docs/specs/pci-ids.txt
+	newdoc pc-bios/README README.pc-bios
+	dodoc docs/qmp-*.txt
+
+	if [[ -n ${softmmu_targets} ]]; then
+		# Remove SeaBIOS since we're using the SeaBIOS packaged one
+		rm "${ED}/usr/share/qemu/bios.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../seabios/bios.bin /usr/share/qemu/bios.bin
+		fi
+
+		# Remove vgabios since we're using the vgabios packaged one
+		rm "${ED}/usr/share/qemu/vgabios.bin"
+		rm "${ED}/usr/share/qemu/vgabios-cirrus.bin"
+		rm "${ED}/usr/share/qemu/vgabios-qxl.bin"
+		rm "${ED}/usr/share/qemu/vgabios-stdvga.bin"
+		rm "${ED}/usr/share/qemu/vgabios-vmware.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../vgabios/vgabios.bin /usr/share/qemu/vgabios.bin
+			dosym ../vgabios/vgabios-cirrus.bin /usr/share/qemu/vgabios-cirrus.bin
+			dosym ../vgabios/vgabios-qxl.bin /usr/share/qemu/vgabios-qxl.bin
+			dosym ../vgabios/vgabios-stdvga.bin /usr/share/qemu/vgabios-stdvga.bin
+			dosym ../vgabios/vgabios-vmware.bin /usr/share/qemu/vgabios-vmware.bin
+		fi
+
+		# Remove sgabios since we're using the sgabios packaged one
+		rm "${ED}/usr/share/qemu/sgabios.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../sgabios/sgabios.bin /usr/share/qemu/sgabios.bin
+		fi
+
+		# Remove iPXE since we're using the iPXE packaged one
+		rm "${ED}"/usr/share/qemu/pxe-*.rom
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../ipxe/8086100e.rom /usr/share/qemu/pxe-e1000.rom
+			dosym ../ipxe/80861209.rom /usr/share/qemu/pxe-eepro100.rom
+			dosym ../ipxe/10500940.rom /usr/share/qemu/pxe-ne2k_pci.rom
+			dosym ../ipxe/10222000.rom /usr/share/qemu/pxe-pcnet.rom
+			dosym ../ipxe/10ec8139.rom /usr/share/qemu/pxe-rtl8139.rom
+			dosym ../ipxe/1af41000.rom /usr/share/qemu/pxe-virtio.rom
+		fi
+	fi
+
+	qemu_support_kvm && readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	if qemu_support_kvm; then
+		readme.gentoo_print_elog
+	fi
+
+	if [[ -n ${softmmu_targets} ]] && use kernel_linux; then
+		udev_reload
+	fi
+
+	fcaps cap_net_admin /usr/libexec/qemu-bridge-helper
+}
+
+pkg_info() {
+	echo "Using:"
+	echo "  $(best_version app-emulation/spice-protocol)"
+	echo "  $(best_version sys-firmware/ipxe)"
+	echo "  $(best_version sys-firmware/seabios)"
+	if has_version 'sys-firmware/seabios[binary]'; then
+		echo "    USE=binary"
+	else
+		echo "    USE=''"
+	fi
+	echo "  $(best_version sys-firmware/vgabios)"
+}