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[Qemu-devel] [PATCH 58/81] ahci: advertise HOST_CAP_64
From: |
Michael Roth |
Subject: |
[Qemu-devel] [PATCH 58/81] ahci: advertise HOST_CAP_64 |
Date: |
Mon, 20 Mar 2017 18:08:22 -0500 |
From: Ladi Prosek <address@hidden>
The AHCI emulation code supports 64-bit addressing and should advertise this
fact in the Host Capabilities register. Both Linux and Windows drivers test
this bit to decide if the upper 32 bits of various registers may be written
to, and at least some versions of Windows have a bug where DMA is attempted
with an address above 4GB but, in the absence of HOST_CAP_64, the upper 32
bits are left unititialized which leads to a memory corruption.
[Maintainer edit:
This fixes https://bugzilla.redhat.com/show_bug.cgi?id=1411105,
which affects Windows Server 2008 SP2 in some cases.]
Signed-off-by: Ladi Prosek <address@hidden>
Message-id: address@hidden
[Amended commit message --js]
Signed-off-by: John Snow <address@hidden>
(cherry picked from commit 98cb5dccb192b0082626080890dac413473573c6)
Signed-off-by: Michael Roth <address@hidden>
---
hw/ide/ahci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index 3c19bda..6a17acf 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -488,7 +488,7 @@ static void ahci_reg_init(AHCIState *s)
s->control_regs.cap = (s->ports - 1) |
(AHCI_NUM_COMMAND_SLOTS << 8) |
(AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) |
- HOST_CAP_NCQ | HOST_CAP_AHCI;
+ HOST_CAP_NCQ | HOST_CAP_AHCI | HOST_CAP_64;
s->control_regs.impl = (1 << s->ports) - 1;
--
2.7.4
- [Qemu-devel] [PATCH 45/81] virtio-crypto: fix possible integer and heap overflow, (continued)
- [Qemu-devel] [PATCH 45/81] virtio-crypto: fix possible integer and heap overflow, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 48/81] x86: ioapic: fix fail migration when irqchip=split, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 53/81] virtio: fix up max size checks, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 35/81] machine: Convert abstract typename on compat_props to subclass names, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 34/81] 9pfs: fix vulnerability in openat_dir() and local_unlinkat_common(), Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 47/81] display: cirrus: ignore source pitch value as needed in blit_is_unsafe, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 04/81] 9pfs: introduce relative_openat_nofollow() helper, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 60/81] s390x/kvm: fix small race reboot vs. cmma, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 57/81] cpu-exec: fix icount out-of-bounds access, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 54/81] block/iscsi: avoid data corruption with cache=writeback, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 58/81] ahci: advertise HOST_CAP_64,
Michael Roth <=
- [Qemu-devel] [PATCH 62/81] block/nfs: fix naming of runtime opts, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 65/81] target-ppc, tcg: fix usermode segfault with pthread_create(), Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 67/81] target/sparc: Restore ldstub of odd asis, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 68/81] apic: reset apic_delivered global variable on machine reset, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 41/81] ui/gtk: fix crash at startup when no console is available, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 44/81] qemu-thread: fix qemu_thread_set_name() race in qemu_thread_create(), Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 49/81] char: fix ctrl-a b not working, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 51/81] tcg/aarch64: Fix tcg_out_movi, Michael Roth, 2017/03/20
- [Qemu-devel] [PATCH 52/81] ui: use evdev keymap when running under wayland, Michael Roth, 2017/03/20