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* powerpc: bitops: introduce {clear,set}_bit_le()Takuya Yoshikawa2012-10-061-0/+10
| | | | | | | | | | | | Needed to replace test_and_set_bit_le() in virt/kvm/kvm_main.c which is being used for this missing function. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Avi Kivity <avi@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tile: fix personality bits handling upon exec()Jiri Kosina2012-10-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Historically, the top three bytes of personality have been used for things such as ADDR_NO_RANDOMIZE, which made sense only for specific architectures. We now however have a flag there that is general no matter the architecture (UNAME26); generally we have to be careful to preserve the personality flags across exec(). This patch fixes tile architecture not to forcefully overwrite personality flags during exec(). In addition to that, we fix two other things along the way: - exec_domain switching is fixed -- set_personality() should always be used instead of directly assigning to current->personality. - as pointed out by Arnd Bergmann, PER_LINUX_32BIT is not used anywhere by tile, so let's just drop that in favor of PER_LINUX Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* cross-arch: don't corrupt personality flags upon exec()Jiri Kosina2012-10-0616-16/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Historically, the top three bytes of personality have been used for things such as ADDR_NO_RANDOMIZE, which made sense only for specific architectures. We now however have a flag there that is general no matter the architecture (UNAME26); generally we have to be careful to preserve the personality flags across exec(). This patch tries to fix all architectures that forcefully overwrite personality flags during exec() (ppc32 and s390 have been fixed recently by commits f9783ec862ea ("[S390] Do not clobber personality flags on exec") and 59e4c3a2fe9c ("powerpc/32: Don't clobber personality flags on exec") in a similar way already). Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Mark Salter <msalter@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* score: select generic atomic64_t supportFengguang Wu2012-10-061-0/+1
| | | | | | | | | It's required for the core fs/namespace.c and many other basic features. Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* frv: kill used but uninitialized variableGeert Uytterhoeven2012-10-061-10/+9
| | | | | | | | | | | | | | | | Commit 6afe1a1fe8ff ("PM: Remove legacy PM") removed the initialization of retval, causing: arch/frv/kernel/pm.c: In function 'sysctl_pm_do_suspend': arch/frv/kernel/pm.c:165:5: warning: 'retval' may be used uninitialized in this function [-Wuninitialized] Remove the variable completely to fix this, and convert to a proper switch (...) { ... } construct to improve readability. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/x86Andi Kleen2012-10-063-4/+4
| | | | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/shAndi Kleen2012-10-062-2/+2
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/scoreAndi Kleen2012-10-061-0/+1
| | | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/powerpcAndi Kleen2012-10-066-6/+6
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/mipsAndi Kleen2012-10-062-2/+2
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/ia64Andi Kleen2012-10-062-2/+2
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/h8300Andi Kleen2012-10-067-8/+9
| | | | | | | | [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/frvAndi Kleen2012-10-062-2/+2
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: fix section conflicts in arch/arm/Andi Kleen2012-10-066-36/+36
| | | | | | | Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sections: disable const sections for PA-RISC v2Andi Kleen2012-10-061-0/+1
| | | | | | | | | | | | | | | | | | The PA-RISC tool chain seems to have some problem with correct read/write attributes on sections. This causes problems when the const sections are fixed up for other architecture to only contain truly read-only data. Disable const sections for PA-RISC This can cause a bit of noise with modpost. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* unicore32: select generic atomic64_t supportFengguang Wu2012-10-061-0/+1
| | | | | | | | | | It's required for the core fs/namespace.c and many other basic features. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mn10300: only add -mmem-funcs to KBUILD_CFLAGS if gcc supports itGeert Uytterhoeven2012-10-061-1/+1
| | | | | | | | | | | | | | | | It seems the current (gcc 4.6.3) no longer provides this so make it conditional. As reported by Tony before, the mn10300 architecture cross-compiles with gcc-4.6.3 if -mmem-funcs is not added to KBUILD_CFLAGS. Reported-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2012-10-0448-1163/+2210
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Avi Kivity: "Highlights of the changes for this release include support for vfio level triggered interrupts, improved big real mode support on older Intels, a streamlines guest page table walker, guest APIC speedups, PIO optimizations, better overcommit handling, and read-only memory." * tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits) KVM: s390: Fix vcpu_load handling in interrupt code KVM: x86: Fix guest debug across vcpu INIT reset KVM: Add resampling irqfds for level triggered interrupts KVM: optimize apic interrupt delivery KVM: MMU: Eliminate pointless temporary 'ac' KVM: MMU: Avoid access/dirty update loop if all is well KVM: MMU: Eliminate eperm temporary KVM: MMU: Optimize is_last_gpte() KVM: MMU: Simplify walk_addr_generic() loop KVM: MMU: Optimize pte permission checks KVM: MMU: Update accessed and dirty bits after guest pagetable walk KVM: MMU: Move gpte_access() out of paging_tmpl.h KVM: MMU: Optimize gpte_access() slightly KVM: MMU: Push clean gpte write protection out of gpte_access() KVM: clarify kvmclock documentation KVM: make processes waiting on vcpu mutex killable KVM: SVM: Make use of asm.h KVM: VMX: Make use of asm.h KVM: VMX: Make lto-friendly KVM: x86: lapic: Clean up find_highest_vector() and count_vectors() ... Conflicts: arch/s390/include/asm/processor.h arch/x86/kvm/i8259.c
| * KVM: s390: Fix vcpu_load handling in interrupt codeChristian Borntraeger2012-09-271-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | Recent changes (KVM: make processes waiting on vcpu mutex killable) now requires to check the return value of vcpu_load. This triggered a warning in s390 specific kvm code. Turns out that we can actually remove the put/load, since schedule will do the right thing via the preempt notifiers. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: x86: Fix guest debug across vcpu INIT resetJan Kiszka2012-09-234-43/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we reset a vcpu on INIT, we so far overwrote dr7 as provided by KVM_SET_GUEST_DEBUG, and we also cleared switch_db_regs unconditionally. Fix this by saving the dr7 used for guest debugging and calculating the effective register value as well as switch_db_regs on any potential change. This will change to focus of the set_guest_debug vendor op to update_dp_bp_intercept. Found while trying to stop on start_secondary. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: Add resampling irqfds for level triggered interruptsAlex Williamson2012-09-231-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To emulate level triggered interrupts, add a resample option to KVM_IRQFD. When specified, a new resamplefd is provided that notifies the user when the irqchip has been resampled by the VM. This may, for instance, indicate an EOI. Also in this mode, posting of an interrupt through an irqfd only asserts the interrupt. On resampling, the interrupt is automatically de-asserted prior to user notification. This enables level triggered interrupts to be posted and re-enabled from vfio with no userspace intervention. All resampling irqfds can make use of a single irq source ID, so we reserve a new one for this interface. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: optimize apic interrupt deliveryGleb Natapov2012-09-204-12/+193
| | | | | | | | | | | | | | | | | | | | | | Most interrupt are delivered to only one vcpu. Use pre-build tables to find interrupt destination instead of looping through all vcpus. In case of logical mode loop only through vcpus in a logical cluster irq is sent to. Signed-off-by: Gleb Natapov <gleb@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Eliminate pointless temporary 'ac'Avi Kivity2012-09-201-4/+1
| | | | | | | | | | | | | | | | | | 'ac' essentially reconstructs the 'access' variable we already have, except for the PFERR_PRESENT_MASK and PFERR_RSVD_MASK. As these are not used by callees, just use 'access' directly. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Avoid access/dirty update loop if all is wellAvi Kivity2012-09-201-6/+20
| | | | | | | | | | | | | | | | Keep track of accessed/dirty bits; if they are all set, do not enter the accessed/dirty update loop. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Eliminate eperm temporaryAvi Kivity2012-09-201-4/+1
| | | | | | | | | | | | | | 'eperm' is no longer used in the walker loop, so we can eliminate it. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Optimize is_last_gpte()Avi Kivity2012-09-204-20/+41
| | | | | | | | | | | | | | | | | | Instead of branchy code depending on level, gpte.ps, and mmu configuration, prepare everything in a bitmap during mode changes and look it up during runtime. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Simplify walk_addr_generic() loopAvi Kivity2012-09-201-35/+25
| | | | | | | | | | | | | | | | | | | | | | | | The page table walk is coded as an infinite loop, with a special case on the last pte. Code it as an ordinary loop with a termination condition on the last pte (large page or walk length exhausted), and put the last pte handling code after the loop where it belongs. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Optimize pte permission checksAvi Kivity2012-09-205-36/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | walk_addr_generic() permission checks are a maze of branchy code, which is performed four times per lookup. It depends on the type of access, efer.nxe, cr0.wp, cr4.smep, and in the near future, cr4.smap. Optimize this away by precalculating all variants and storing them in a bitmap. The bitmap is recalculated when rarely-changing variables change (cr0, cr4) and is indexed by the often-changing variables (page fault error code, pte access permissions). The permission check is moved to the end of the loop, otherwise an SMEP fault could be reported as a false positive, when PDE.U=1 but PTE.U=0. Noted by Xiao Guangrong. The result is short, branch-free code. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Update accessed and dirty bits after guest pagetable walkAvi Kivity2012-09-201-29/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While unspecified, the behaviour of Intel processors is to first perform the page table walk, then, if the walk was successful, to atomically update the accessed and dirty bits of walked paging elements. While we are not required to follow this exactly, doing so will allow us to perform the access permissions check after the walk is complete, rather than after each walk step. (the tricky case is SMEP: a zero in any pte's U bit makes the referenced page a supervisor page, so we can't fault on a one bit during the walk itself). Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Move gpte_access() out of paging_tmpl.hAvi Kivity2012-09-202-16/+15
| | | | | | | | | | | | | | | | | | | | We no longer rely on paging_tmpl.h defines; so we can move the function to mmu.c. Rely on zero extension to 64 bits to get the correct nx behaviour. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Optimize gpte_access() slightlyAvi Kivity2012-09-201-3/+1
| | | | | | | | | | | | | | | | | | If nx is disabled, then is gpte[63] is set we will hit a reserved bit set fault before checking permissions; so we can ignore the setting of efer.nxe. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: MMU: Push clean gpte write protection out of gpte_access()Avi Kivity2012-09-203-13/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gpte_access() computes the access permissions of a guest pte and also write-protects clean gptes. This is wrong when we are servicing a write fault (since we'll be setting the dirty bit momentarily) but correct when instantiating a speculative spte, or when servicing a read fault (since we'll want to trap a following write in order to set the dirty bit). It doesn't seem to hurt in practice, but in order to make the code readable, push the write protection out of gpte_access() and into a new protect_clean_gpte() which is called explicitly when needed. Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: make processes waiting on vcpu mutex killableMichael S. Tsirkin2012-09-171-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vcpu mutex can be held for unlimited time so taking it with mutex_lock on an ioctl is wrong: one process could be passed a vcpu fd and call this ioctl on the vcpu used by another process, it will then be unkillable until the owner exits. Call mutex_lock_killable instead and return status. Note: mutex_lock_interruptible would be even nicer, but I am not sure all users are prepared to handle EINTR from these ioctls. They might misinterpret it as an error. Cleanup paths expect a vcpu that can't be used by any userspace so this will always succeed - catch bugs by calling BUG_ON. Catch callers that don't check return state by adding __must_check. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: SVM: Make use of asm.hAvi Kivity2012-09-171-26/+20
| | | | | | | | | | | | | | | | Use macros for bitness-insensitive register names, instead of rolling our own. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: VMX: Make use of asm.hAvi Kivity2012-09-171-39/+30
| | | | | | | | | | | | | | | | Use macros for bitness-insensitive register names, instead of rolling our own. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: VMX: Make lto-friendlyAvi Kivity2012-09-171-6/+11
| | | | | | | | | | | | | | | | | | LTO (link-time optimization) doesn't like local labels to be referred to from a different function, since the two functions may be built in separate compilation units. Use an external variable instead. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: x86: lapic: Clean up find_highest_vector() and count_vectors()Takuya Yoshikawa2012-09-121-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | find_highest_vector() and count_vectors(): - Instead of using magic values, define and use proper macros. find_highest_vector(): - Remove likely() which is there only for historical reasons and not doing correct branch predictions anymore. Using such heuristics to optimize this function is not worth it now. Let CPUs predict things instead. - Stop checking word[0] separately. This was only needed for doing likely() optimization. - Use for loop, not while, to iterate over the register array to make the code clearer. Note that we actually confirmed that the likely() did wrong predictions by inserting debug code. Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: MMU: remove unnecessary checkXiao Guangrong2012-09-101-5/+0
| | | | | | | | | | | | | | | | Checking the return of kvm_mmu_get_page is unnecessary since it is guaranteed by memory cache Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: Depend on HIGH_RES_TIMERSLiu, Jinsong2012-09-101-0/+1
| | | | | | | | | | | | | | | | | | | | KVM lapic timer and tsc deadline timer based on hrtimer, setting a leftmost node to rb tree and then do hrtimer reprogram. If hrtimer not configured as high resolution, hrtimer_enqueue_reprogram do nothing and then make kvm lapic timer and tsc deadline timer fail. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: use symbolic constant for nr interruptsMichael S. Tsirkin2012-09-061-2/+2
| | | | | | | | | | | | | | | | | | interrupt_bitmap is KVM_NR_INTERRUPTS bits in size, so just use that instead of hard-coded constants and math. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: emulator: optimize "rep ins" handlingGleb Natapov2012-09-062-6/+31
| | | | | | | | | | | | | | | | | | | | Optimize "rep ins" by allowing emulator to write back more than one datum at a time. Introduce new operand type OP_MEM_STR which tells writeback() that dst contains pointer to an array that should be written back as opposite to just one data element. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: emulator: string_addr_inc() cleanupGleb Natapov2012-09-061-7/+4
| | | | | | | | | | | | | | | | Remove unneeded segment argument. Address structure already has correct segment which was put there during decode. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: emulator: make x86 emulation modes enum instead of definesGleb Natapov2012-09-062-13/+13
| | | | | | | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: Provide userspace IO exit completion callbackGleb Natapov2012-09-062-37/+57
| | | | | | | | | | | | | | | | | | | | Current code assumes that IO exit was due to instruction emulation and handles execution back to emulator directly. This patch adds new userspace IO exit completion callback that can be set by any other code that caused IO exit to userspace. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: move postcommit flush to x86, as mmio sptes are x86 specificMarcelo Tosatti2012-09-061-0/+8
| | | | | | | | | | | | | | | | | | Other arches do not need this. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> v2: fix incorrect deletion of mmio sptes on gpa move (noticed by Takuya) Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: split kvm_arch_flush_shadowMarcelo Tosatti2012-09-064-4/+25
| | | | | | | | | | | | | | | | Introducing kvm_arch_flush_shadow_memslot, to invalidate the translations of a single memory slot. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: SVM: constify lookup tablesMathias Krause2012-09-051-4/+4
| | | | | | | | | | | | | | | | | | | | We never modify direct_access_msrs[], msrpm_ranges[], svm_exit_handlers[] or x86_intercept_map[] at runtime. Mark them r/o. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: VMX: constify lookup tablesMathias Krause2012-09-051-7/+7
| | | | | | | | | | | | | | | | We use vmcs_field_to_offset_table[], kvm_vmx_segment_fields[] and kvm_vmx_exit_handlers[] as lookup tables only -- make them r/o. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: x86: more constificationMathias Krause2012-09-052-2/+2
| | | | | | | | | | Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: x86: constify read_write_emulator_opsMathias Krause2012-09-051-4/+4
| | | | | | | | | | | | | | We never change those, make them r/o. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-03 06:19:19 +0000