- 25 4月, 2010 30 次提交
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由 Alexander Graf 提交于
BATs didn't work. Well, they did, but only up to BAT3. As soon as we came to BAT4 the offset calculation was screwed up and we ended up overwriting BAT0-3. Fortunately, Linux hasn't been using BAT4+. It's still a good idea to write correct code though. 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
To emulate paired single instructions, we need to be able to call FPU operations from within the kernel. Since we don't want gcc to spill arbitrary FPU code everywhere, we tell it to use a soft fpu. Since we know we can really call the FPU in safe areas, let's also add some calls that we can later use to actually execute real world FPU operations on the host's FPU. 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
We need to call the ext giveup handlers from code outside of book3s.c. So let's make it non-static. 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 Book3S KVM implementation contains some helper functions to load and store data from and to virtual addresses. Unfortunately, this helper used to keep the physical address it so nicely found out for us to itself. So let's change that and make it return the physical address it resolved. 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 Book3S_32 specifications allows for two instructions to modify segment registers: mtsrin and mtsr. Most normal operating systems use mtsrin, because it allows to define which segment it wants to change using a register. But since I was trying to run an embedded guest, it turned out to be using mtsr with hardcoded values. So let's also emulate mtsr. It's a valid instruction after all. 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
There's a typo in the debug ifdef of the book3s_32 mmu emulation. While trying to debug something I stumbled across that and wanted to save anyone after me (or myself later) from having to debug that again. So let's fix the ifdef. 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
There are some situations when we're pretty sure the guest will use the FPU soon. So we can save the churn of going into the guest, finding out it does want to use the FPU and going out again. This patch adds preloading of the FPU when it's reasonable. 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
When we for example get an Altivec interrupt, but our guest doesn't support altivec, we need to inject a program interrupt, not an altivec interrupt. The same goes for paired singles. When an altivec interrupt arrives, we're pretty sure we need to emulate the instruction because it's a paired single operation. So let's make all the ext handlers aware that they need to jump to the program interrupt handler when an extension interrupt arrives that was not supposed to arrive for the guest CPU. 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 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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- 21 4月, 2010 6 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 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 Christoph Hellwig 提交于
Before commit e28cbf22 ("improve sys_newuname() for compat architectures") 64-bit x86 had a private implementation of sys_uname which was just called sys_uname, which other architectures used for the old uname. Due to some merge issues with the uname refactoring patches we ended up calling the old uname version for both the old and new system call slots, which lead to the domainname filed never be set which caused failures with libnss_nis. Reported-and-tested-by: NAndy Isaacson <adi@hexapodia.org> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 20 4月, 2010 4 次提交
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由 Takuya Yoshikawa 提交于
Int is not long enough to store the size of a dirty bitmap. This patch fixes this problem with the introduction of a wrapper function to calculate the sizes of dirty bitmaps. Note: in mark_page_dirty(), we have to consider the fact that __set_bit() takes the offset as int, not long. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Xiao Guangrong 提交于
This patch fix: - calculate zapped page number properly in mmu_zap_unsync_children() - calculate freeed page number properly kvm_mmu_change_mmu_pages() - if zapped children page it shoud restart hlist walking KVM-Stable-Tag. Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Avi Kivity 提交于
Currently we set eflags.vm unconditionally when entering real mode emulation through virtual-8086 mode, and clear it unconditionally when we enter protected mode. The means that the following sequence KVM_SET_REGS (rflags.vm=1) KVM_SET_SREGS (cr0.pe=1) Ends up with rflags.vm clear due to KVM_SET_SREGS triggering enter_pmode(). Fix by shadowing rflags.vm (and rflags.iopl) correctly while in real mode: reads and writes to those bits access a shadow register instead of the actual register. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Andre Przywara 提交于
There is a quirk for AMD K8 CPUs in many Linux kernels (see arch/x86/kernel/cpu/mcheck/mce.c:__mcheck_cpu_apply_quirks()) that clears bit 10 in that MCE related MSR. KVM can only cope with all zeros or all ones, so it will inject a #GP into the guest, which will let it panic. So lets add a quirk to the quirk and ignore this single cleared bit. This fixes -cpu kvm64 on all machines and -cpu host on K8 machines with some guest Linux kernels. Signed-off-by: NAndre Przywara <andre.przywara@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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