- 11 May, 2011 26 commits
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Avi Kivity authored
When running in guest mode, certain instructions can be intercepted by hardware. This also holds for nested guests running on emulated virtualization hardware, in particular instructions emulated by kvm itself. This patch adds a framework for intercepting instructions. If an instruction is marked for interception, and if we're running in guest mode, a callback is called to check whether an intercept is needed or not. The callback is called at three points in time: immediately after beginning execution, after checking privilge exceptions, and after checking memory exception. This suits the different interception points defined for different instructions and for the various virtualization instruction sets. In addition, a new X86EMUL_INTERCEPT is defined, which any callback or memory access may define, allowing the more complicated intercepts to be implemented in existing callbacks. Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Add support for marking an instruction as SSE, switching registers used to the SSE register file. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Most SIMD instructions use the 66/f2/f3 prefixes to distinguish between different variants of the same instruction. Usually the encoding is quite regular, but in some cases (including non-SIMD instructions) the prefixes generate very different instructions. Examples include XCHG/PAUSE, MOVQ/MOVDQA/MOVDQU, and MOVBE/CRC32. Allow the emulator to handle these special cases by splitting such opcodes into groups, with different decode flags and execution functions for different prefixes. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Needed for emulating fpu instructions. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Currently we store a rep prefix as 1 or 2 depending on whether it is a REPE or REPNE. Since sse instructions depend on the prefix value, store it as the original opcode to simplify things further on. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Since sse instructions can issue 16-byte mmios, we need to support them. We can't increase the kvm_run mmio buffer size to 16 bytes without breaking compatibility, so instead we break the large mmios into two smaller 8-byte ones. Since the bus is 64-bit we aren't breaking any atomicity guarantees. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Make room for sse mmio completions. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Needed for coalesced mmio using sse. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Gleb Natapov authored
Fix race between nmi injection and enabling nmi window in a simpler way. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Marcelo Tosatti authored
This reverts commit f8636849. Simpler fix to follow. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Glauber Costa authored
As Avi recently mentioned, the new standard mechanism for exposing features is KVM_GET_SUPPORTED_CPUID, not spamming CAPs. For some reason async pf missed that. So expose async_pf here. Signed-off-by:
Glauber Costa <glommer@redhat.com> CC: Gleb Natapov <gleb@redhat.com> CC: Avi Kivity <avi@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Use vmx_set_nmi_mask() instead of open-coding management of the hardware bit and the software hint (nmi_known_unmasked). There's a slight change of behaviour when running without hardware virtual NMI support - we now clear the NMI mask if NMI delivery faulted in that case as well. This improves emulation accuracy. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Jan Kiszka authored
We use boot_cpu_has now. Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
vmx_complete_atomic_exit() cached it for us, so we can use it here. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Only read it if we're going to use it later. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Move the exit reason checks to the front of the function, for early exit in the common case. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Check for the exit reason first; this allows us, later, to avoid a VMREAD for VM_EXIT_INTR_INFO_FIELD. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
When we haven't injected an interrupt, we don't need to recover the nmi blocking state (since the guest can't set it by itself). This allows us to avoid a VMREAD later on. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
We may read the cpl quite often in the same vmexit (instruction privilege check, memory access checks for instruction and operands), so we gain a bit if we cache the value. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
In long mode, vm86 mode is disallowed, so we need not check for it. Reading rflags.vm may require a VMREAD, so it is expensive. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
If called several times within the same exit, return cached results. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Some rflags bits are owned by the host, not guest, so we need to use kvm_get_rflags() to strip those bits away or kvm_set_rflags() to add them back. Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
We can get memslot id from memslot->id directly Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits) slcan: fix ldisc->open retval net/usb: mark LG VL600 LTE modem ethernet interface as WWAN xfrm: Don't allow esn with disabled anti replay detection xfrm: Assign the inner mode output function to the dst entry net: dev_close() should check IFF_UP vlan: fix GVRP at dismantle time netfilter: revert a2361c87 netfilter: IPv6: fix DSCP mangle code netfilter: IPv6: initialize TOS field in REJECT target module IPVS: init and cleanup restructuring IPVS: Change of socket usage to enable name space exit. netfilter: ebtables: only call xt_compat_add_offset once per rule netfilter: fix ebtables compat support netfilter: ctnetlink: fix timestamp support for new conntracks pch_gbe: support ML7223 IOH PCH_GbE : Fixed the issue of checksum judgment PCH_GbE : Fixed the issue of collision detection NET: slip, fix ldisc->open retval be2net: Fixed bugs related to PVID. ehea: fix wrongly reported speed and port ...
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David Rientjes authored
This reverts commit 4a5fa359, which did not allow SLUB to be used on architectures that use DISCONTIGMEM without compiling NUMA support without CONFIG_BROKEN also set. The slub panic that it was intended to prevent is addressed by d9b41e0b ("[PARISC] set memory ranges in N_NORMAL_MEMORY when onlined") on parisc so there is no further slub issues with such a configuration. The reverts allows SLUB now to be used on such architectures since there haven't been any reports of additional errors. Cc: James Bottomley <James.Bottomley@suse.de> Signed-off-by:
David Rientjes <rientjes@google.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- 10 May, 2011 14 commits
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Oliver Hartkopp authored
TTY layer expects 0 if the ldisc->open operation succeeded. Reported-by:
Matvejchikov Ilya <matvejchikov@gmail.com> Signed-off-by:
Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Dan Williams authored
Like other mobile broadband device ethernet interfaces, mark the LG VL600 with the 'wwan' devtype so userspace knows it needs additional configuration via the AT port before the interface can be used. Signed-off-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Steffen Klassert authored
Unlike the standard case, disabled anti replay detection needs some nontrivial extra treatment on ESN. RFC 4303 states: Note: If a receiver chooses to not enable anti-replay for an SA, then the receiver SHOULD NOT negotiate ESN in an SA management protocol. Use of ESN creates a need for the receiver to manage the anti-replay window (in order to determine the correct value for the high-order bits of the ESN, which are employed in the ICV computation), which is generally contrary to the notion of disabling anti-replay for an SA. So return an error if an ESN state with disabled anti replay detection is inserted for now and add the extra treatment later if we need it. Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Steffen Klassert authored
As it is, we assign the outer modes output function to the dst entry when we create the xfrm bundle. This leads to two problems on interfamily scenarios. We might insert ipv4 packets into ip6_fragment when called from xfrm6_output. The system crashes if we try to fragment an ipv4 packet with ip6_fragment. This issue was introduced with git commit ad0081e4 (ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed). The second issue is, that we might insert ipv4 packets in netfilter6 and vice versa on interfamily scenarios. With this patch we assign the inner mode output function to the dst entry when we create the xfrm bundle. So xfrm4_output/xfrm6_output from the inner mode is used and the right fragmentation and netfilter functions are called. We switch then to outer mode with the output_finish functions. Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Commit 44345724 (factorize sync-rcu call in unregister_netdevice_many) mistakenly removed one test from dev_close() Following actions trigger a BUG : modprobe bonding modprobe dummy ifconfig bond0 up ifenslave bond0 dummy0 rmmod dummy dev_close() must not close a non IFF_UP device. With help from Frank Blaschka and Einar EL Lueck Reported-by:
Frank Blaschka <blaschka@linux.vnet.ibm.com> Reported-by:
Einar EL Lueck <ELELUECK@de.ibm.com> Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
ip link add link eth2 eth2.103 type vlan id 103 gvrp on loose_binding on ip link set eth2.103 up rmmod tg3 # driver providing eth2 BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffffa0030c9e>] garp_request_leave+0x3e/0xc0 [garp] PGD 11d251067 PUD 11b9e0067 PMD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/net/eth2.104/ifindex CPU 0 Modules linked in: tg3(-) 8021q garp nfsd lockd auth_rpcgss sunrpc libphy sg [last unloaded: x_tables] Pid: 11494, comm: rmmod Tainted: G W 2.6.39-rc6-00261-gfd71257-dirty #580 HP ProLiant BL460c G6 RIP: 0010:[<ffffffffa0030c9e>] [<ffffffffa0030c9e>] garp_request_leave+0x3e/0xc0 [garp] RSP: 0018:ffff88007a19bae8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88011b5e2000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000175 RDI: ffffffffa0030d5b RBP: ffff88007a19bb18 R08: 0000000000000001 R09: ffff88011bd64a00 R10: ffff88011d34ec00 R11: 0000000000000000 R12: 0000000000000002 R13: ffff88007a19bc48 R14: ffff88007a19bb88 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88011fc00000(0063) knlGS:00000000f77d76c0 CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b CR2: 0000000000000000 CR3: 000000011a675000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process rmmod (pid: 11494, threadinfo ffff88007a19a000, task ffff8800798595c0) Stack: ffff88007a19bb36 ffff88011c84b800 ffff88011b5e2000 ffff88007a19bc48 ffff88007a19bb88 0000000000000006 ffff88007a19bb38 ffffffffa003a5f6 ffff88007a19bb38 670088007a19bba8 ffff88007a19bb58 ffffffffa00397e7 Call Trace: [<ffffffffa003a5f6>] vlan_gvrp_request_leave+0x46/0x50 [8021q] [<ffffffffa00397e7>] vlan_dev_stop+0xb7/0xc0 [8021q] [<ffffffff8137e427>] __dev_close_many+0x87/0xe0 [<ffffffff8137e507>] dev_close_many+0x87/0x110 [<ffffffff8137e630>] rollback_registered_many+0xa0/0x240 [<ffffffff8137e7e9>] unregister_netdevice_many+0x19/0x60 [<ffffffffa00389eb>] vlan_device_event+0x53b/0x550 [8021q] [<ffffffff8143f448>] ? ip6mr_device_event+0xa8/0xd0 [<ffffffff81479d03>] notifier_call_chain+0x53/0x80 [<ffffffff81062539>] __raw_notifier_call_chain+0x9/0x10 [<ffffffff81062551>] raw_notifier_call_chain+0x11/0x20 [<ffffffff8137df82>] call_netdevice_notifiers+0x32/0x60 [<ffffffff8137e69f>] rollback_registered_many+0x10f/0x240 [<ffffffff8137e85f>] rollback_registered+0x2f/0x40 [<ffffffff8137e8c8>] unregister_netdevice_queue+0x58/0x90 [<ffffffff8137e9eb>] unregister_netdev+0x1b/0x30 [<ffffffffa005d73f>] tg3_remove_one+0x6f/0x10b [tg3] We should call vlan_gvrp_request_leave() from unregister_vlan_dev(), not from vlan_dev_stop(), because vlan_gvrp_uninit_applicant() is called right after unregister_netdevice_queue(). In batch mode, unregister_netdevice_queue() doesn’t immediately call vlan_dev_stop(). Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (28 commits) MIPS: Alchemy: fix xxs1500 build error MIPS: Invalidate old TLB mappings when updating huge page PTEs. MIPS: Hibernation: Fixes for PAGE_SIZE >= 64kb MIPS: JZ4740: Set one-shot feature flag for the clockevent MIPS: JZ4740: Export symbols to the watchdog driver module MIPS: JZ4740: Fix GCC 4.6.0 build error. MIPS: Audit: Fix success success argument pass to audit_syscall_exit MIPS: Fix calc_vmlinuz_load_addr build warnings. MIPS: Alchemy: Fix GCC 4.6.0 build error. MIPS: Document former use of timerfd(2) syscall number. MIPS: IP27: Fix GCC 4.6.0 build error. MIPS: IP27: Fix GCC 4.6.0 build error. MIPS: bcm63xx: Fix header_crc comment in bcm963xx_tag.h MIPS: Octeon: Guard the Kconfig body with CPU_CAVIUM_OCTEON MIPS: Octeon: Cleanup Kconfig IRQ_CPU* symbols. MIPS: Rename .data..mostly and properly handle it in linker script MIPS: MSP: Fix build error MIPS: MSP71xx: Fix typo in msp_per_irq_controller MIPS: Loongson: Fix GCC 2.6.0 build error. MIPS: Jazz: Fix GCC 4.6.0 build error ...
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: fix race condition in AIL push trigger xfs: make AIL target updates and compares 32bit safe. xfs: always push the AIL to the target xfs: exit AIL push work correctly when AIL is empty xfs: ensure reclaim cursor is reset correctly at end of AG
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Manuel Lauss authored
This fixes: alchemy/xxs1500/init.c: In function 'prom_init': alchemy/xxs1500/init.c:57:17: error: ignoring return value of 'kstrtoul', declared with attribute warn_unused_result Signed-off-by:
Manuel Lauss <manuel.lauss@googlemail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/2340/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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David Daney authored
Without this, stale Icache or TLB entries may be used. Signed-off-by:
David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org https://patchwork.linux-mips.org/patch/2318/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Wu Zhangjin authored
PAGE_SIZE >= 64kb (1 << 16) is too big to be the immediate of the addiu/daddiu instruction, so, use addu/daddu instruction instead. The following compiling error is fixed: AS arch/mips/power/hibernate.o arch/mips/power/hibernate.S: Assembler messages: arch/mips/power/hibernate.S:38: Error: expression out of range make[2]: *** [arch/mips/power/hibernate.o] Error 1 make[1]: *** [arch/mips/power] Error 2 Reported-by:
Roman Mamedov <rm@romanrm.ru> Signed-off-by:
Wu Zhangjin <wuzhangjin@gmail.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2313/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Lars-Peter Clausen authored
The code for supporting one-shot mode for the clockevent is already there, only the feature flag was not set. Setting the one-shot flag allows the kernel to run in tickless mode. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2261/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Ralf Baechle authored
MODPOST 356 modules ERROR: "jz4740_timer_disable_watchdog" [drivers/watchdog/jz4740_wdt.ko] undefine d! ERROR: "jz4740_timer_enable_watchdog" [drivers/watchdog/jz4740_wdt.ko] undefined ! make[1]: *** [__modpost] Error 1 Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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