- 25 4月, 2010 23 次提交
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由 Alexander Graf 提交于
The Gekko has some SPR values that differ from other PPC core values and also some additional ones. Let's add support for them in our mfspr/mtspr emulator. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
The Gekko implements an extension called paired singles. When the guest wants to use that extension, we need to make sure we're not running the host FPU, because all FPU instructions need to get emulated to accomodate for additional operations that occur. This patch adds an hflag to track if we're in paired single mode or not. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
Emulation of an instruction can have different outcomes. It can succeed, fail, require MMIO, do funky BookE stuff - or it can just realize something's odd and will be fixed the next time around. Exactly that is what EMULATE_AGAIN means. Using that flag we can now tell the caller that nothing happened, but we still want to go back to the guest and see what happens next time we come around. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
The guest I was trying to get to run uses the LHA and LHAU instructions. Those instructions basically do a load, but also sign extend the result. Since we need to fill our registers by hand when doing MMIO, we also need to sign extend manually. This patch implements sign extended MMIO and the LHA(U) instructions. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
Right now MMIO access can only happen for GPRs and is at most 32 bit wide. That's actually enough for almost all types of hardware out there. Unfortunately, the guest I was using used FPU writes to MMIO regions, so it ended up writing 64 bit MMIOs using FPRs and QPRs. So let's add code to handle those odd cases too. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
Modern PowerPCs have a 64 bit wide FPSCR register. Let's accomodate for that and make it 64 bits in our vcpu struct too. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alexander Graf 提交于
The Gekko has GPRs, SPRs and FPRs like normal PowerPC codes, but it also has QPRs which are basically single precision only FPU registers that get used when in paired single mode. The following patches depend on them being around, so let's add the definitions early. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
The tracing infrastructure adds its own newlines. Remove them from the trace point printk format strings. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
The new lazy fpu switching code may disable cr0 intercepts when running nested. This is a bug because the nested hypervisor may still want to intercept cr0 which will break in this situation. This patch fixes this issue and makes lazy fpu switching working with nested svm. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
Certain functions called during the emulated world switch behave differently when the vcpu is running nested. This is not the expected behavior during a world switch emulation. This patch ensures that the nested state is activated only if the vcpu is completly in nested state. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
This patch makes syncing of the guest tpr to the lapic conditional on !nested. Otherwise a nested guest using the TPR could freeze the guest. Another important change this patch introduces is that the cr8 intercept bits are no longer ORed at vmrun emulation if the guest sets VINTR_MASKING in its VMCB. The reason is that nested cr8 accesses need alway be handled by the nested hypervisor because they change the shadow version of the tpr. Cc: stable@kernel.org Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
The nested_svm_exit_handled_msr() function maps only one page of the guests msr permission bitmap. This patch changes the code to use kvm_read_guest to fix the bug. Cc: stable@kernel.org Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
The nested_svm_map() function can sleep and must not be called from atomic context. So annotate that function. Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
Currently the vmexit emulation does not sync control registers were the access is typically intercepted by the nested hypervisor. But we can not count on that intercepts to sync these registers too and make the code architecturally more correct. Cc: stable@kernel.org Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
Move the actual vmexit routine out of code that runs with irqs and preemption disabled. Cc: stable@kernel.org Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Joerg Roedel 提交于
Use of kmap_atomic disables preemption but if we run in shadow-shadow mode the vmrun emulation executes kvm_set_cr3 which might sleep or fault. So use kmap instead for nested_svm_map. Cc: stable@kernel.org Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch removes redundant prototype of load_pdptrs(). I found load_pdptrs() twice in kvm_host.h. Let's remove one. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch makes non-X86EMUL_* family functions not to use the variable rc. Be sure that this changes nothing but makes the purpose of the variable rc clearer. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch just replaces integer values used inside x86_emulate_insn() and its helper functions to X86EMUL_*. The purpose of this is to make it clear what will happen when the variable rc is compared to X86EMUL_* at the end of x86_emulate_insn(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch just replaces the integer values used inside x86's decode functions to X86EMUL_*. By this patch, it becomes clearer that we are using X86EMUL_* value propagated from ops->read_std() in do_fetch_insn_byte(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Some instruction are obsolete in a long mode. Inject #UD. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
x86 arch defines desc_ptr for idt/gdt pointers, no need to define another structure in kvm code. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Document that partially emulated instructions leave the guest state inconsistent, and that the kernel will complete operations before checking for pending signals. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 22 4月, 2010 7 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: allow 4 coldfire serial ports m68knommu: fix coldfire tcdrain m68knommu: remove a duplicate vector setting line for 68360 Fix m68k-uclinux's rt_sigreturn trampoline m68knommu: correct the CC flags for Coldfire M5272 targets uclinux: error message when FLAT reloc symbol is invalid, v2
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git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: mc13783-regulator: fix a memory leak in mc13783_regulator_remove regulator: Let drivers know when they use the stub API
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git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs: [LogFS] Split large truncated into smaller chunks [LogFS] Set s_bdi [LogFS] Prevent mempool_destroy NULL pointer dereference [LogFS] Move assertion [LogFS] Plug 8 byte information leak [LogFS] Prevent memory corruption on large deletes [LogFS] Remove unused method Fix trivial conflict with added header includes in fs/logfs/super.c
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git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: jfs: add jfs specific ->setattr call jfs: fix diAllocExt error in resizing filesystem jfs_dmap.[ch]: trivial typo fix: s/heigth/height/g
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: Fix TSS size check for 16-bit tasks KVM: Add missing srcu_read_lock() for kvm_mmu_notifier_release() KVM: Increase NR_IOBUS_DEVS limit to 200 KVM: fix the handling of dirty bitmaps to avoid overflows KVM: MMU: fix kvm_mmu_zap_page() and its calling path KVM: VMX: Save/restore rflags.vm correctly in real mode KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL KVM: Don't spam kernel log when injecting exceptions due to bad cr writes KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails KVM: take srcu lock before call to complete_pio()
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git://neil.brown.name/md由 Linus Torvalds 提交于
* 'for-linus' of git://neil.brown.name/md: md/raid5: allow for more than 2^31 chunks.
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由 David Howells 提交于
In the error handling in afs_mntpt_do_automount(), we pass an error pointer to page_cache_release() if read_mapping_page() failed. Instead, we should extend the gotos around the error handling we don't need. Reported-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 4月, 2010 10 次提交
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由 Jan Kiszka 提交于
A 16-bit TSS is only 44 bytes long. So make sure to test for the correct size on task switch. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Lai Jiangshan 提交于
I got this dmesg due to srcu_read_lock() is missing in kvm_mmu_notifier_release(). =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- arch/x86/kvm/x86.h:72 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 2 locks held by qemu-system-x86/3100: #0: (rcu_read_lock){.+.+..}, at: [<ffffffff810d73dc>] __mmu_notifier_release+0x38/0xdf #1: (&(&kvm->mmu_lock)->rlock){+.+...}, at: [<ffffffffa0130a6a>] kvm_mmu_zap_all+0x21/0x5e [kvm] stack backtrace: Pid: 3100, comm: qemu-system-x86 Not tainted 2.6.34-rc3-22949-gbc8a97a-dirty #2 Call Trace: [<ffffffff8106afd9>] lockdep_rcu_dereference+0xaa/0xb3 [<ffffffffa0123a89>] unalias_gfn+0x56/0xab [kvm] [<ffffffffa0119600>] gfn_to_memslot+0x16/0x25 [kvm] [<ffffffffa012ffca>] gfn_to_rmap+0x17/0x6e [kvm] [<ffffffffa01300c1>] rmap_remove+0xa0/0x19d [kvm] [<ffffffffa0130649>] kvm_mmu_zap_page+0x109/0x34d [kvm] [<ffffffffa0130a7e>] kvm_mmu_zap_all+0x35/0x5e [kvm] [<ffffffffa0122870>] kvm_arch_flush_shadow+0x16/0x22 [kvm] [<ffffffffa01189e0>] kvm_mmu_notifier_release+0x15/0x17 [kvm] [<ffffffff810d742c>] __mmu_notifier_release+0x88/0xdf [<ffffffff810d73dc>] ? __mmu_notifier_release+0x38/0xdf [<ffffffff81040848>] ? exit_mm+0xe0/0x115 [<ffffffff810c2cb0>] exit_mmap+0x2c/0x17e [<ffffffff8103c472>] mmput+0x2d/0xd4 [<ffffffff81040870>] exit_mm+0x108/0x115 [...] Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Philippe De Muyter 提交于
Fix driver/serial/mcf.c for 4-ports coldfire's (e.g. MCF5484). Signed-off-by: NPhilippe De Muyter <phdm@macqel.be> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Philippe De Muyter 提交于
Fix tcdrain on coldfire uarts. Currently with coldfire uarts tcdrain returns without waiting for txempty, because (tx)fifosize is 0. Fix that and call uart_update_timeout when setting the baud rate, otherwise tcdrain will wait for an half our :) Also constify mcf_uart_ops. Signed-off-by: NPhilippe De Muyter <phdm@macqel.be> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Greg Ungerer 提交于
Remove a duplicate vector setting line for the 68360 interrupt setup. Pointed out by Roel Kluin <roel.kluin@gmail.com> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Maxim Kuvyrkov 提交于
Signed-off-by: NMaxim Kuvyrkov <maxim@codesourcery.com> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Philip Nye 提交于
Signed-off-by: NPhilip Nye <philipn@engarts.com> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Jun Sun 提交于
This patch fixes a cosmetic error in printk. Text segment and data/bss segment are allocated from two different areas. It is not meaningful to give the diff between them in the error reporting messages. Signed-off-by: NJun Sun <jsun@junsun.net> Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
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由 Joern Engel 提交于
Truncate would do an almost limitless amount of work without invoking the garbage collector in between. Split it up into more manageable, though still large, chunks. Signed-off-by: NJoern Engel <joern@logfs.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6由 Linus Torvalds 提交于
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: quota: Convert __DQUOT_PARANOIA symbol to standard config option
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