kernel.git/arch/mips/kvm/emulate.c, branch linux-6.3.y

KVM: remove KVM_REQ_UNHALT

2022-09-26T16:37:21Z

KVM_REQ_UNHALT is now unnecessary because it is replaced by the return value of kvm_vcpu_block/kvm_vcpu_halt. Remove it. No functional change intended. Signed-off-by: Paolo Bonzini Signed-off-by: Sean Christopherson Acked-by: Marc Zyngier Message-Id: <20220921003201.1441511-13-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: mips, x86: do not rely on KVM_REQ_UNHALT

2022-09-26T16:37:21Z

KVM_REQ_UNHALT is a weird request that simply reports the value of kvm_arch_vcpu_runnable() on exit from kvm_vcpu_halt(). Only MIPS and x86 are looking at it, the others just clear it. Check the state of the vCPU directly so that the request is handled as a nop on all architectures. No functional change intended, except for corner cases where an event arrive immediately after a signal become pending or after another similar host-side event. Signed-off-by: Paolo Bonzini Signed-off-by: Sean Christopherson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20220921003201.1441511-12-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: Rename kvm_vcpu_block() => kvm_vcpu_halt()

2021-12-08T09:24:51Z

Rename kvm_vcpu_block() to kvm_vcpu_halt() in preparation for splitting the actual "block" sequences into a separate helper (to be named kvm_vcpu_block()). x86 will use the standalone block-only path to handle non-halt cases where the vCPU is not runnable. Rename block_ns to halt_ns to match the new function name. No functional change intended. Reviewed-by: David Matlack Reviewed-by: Christian Borntraeger Signed-off-by: Sean Christopherson Message-Id: <20211009021236.4122790-14-seanjc@google.com> Signed-off-by: Paolo Bonzini

MIPS: Remove KVM_TE support

2021-03-10T14:18:48Z

After removal of the guest part of KVM TE (trap and emulate), also remove the host part. Signed-off-by: Thomas Bogendoerfer

MIPS: KVM: Convert a fallthrough comment to fallthrough

2020-08-10T08:11:48Z

There is a fallthrough comment being forgotten, GCC complains about it: arch/mips/kvm/emulate.c: In function kvm_mips_emulate_load: arch/mips/kvm/emulate.c:1936:21: error: this statement may fall through 1936 | vcpu->mmio_needed = 1; /* unsigned */ | ~~~~~~~~~~~~~~~~~~^~~ arch/mips/kvm/emulate.c:1939:2: note: here 1939 | case lw_op: Just fix it. Signed-off-by: Jiaxun Yang Reviewed-by: Huacai Chen Message-Id: <20200810011749.3211128-1-jiaxun.yang@flygoat.com> Signed-off-by: Paolo Bonzini

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2020-08-06T19:59:31Z

Pull KVM updates from Paolo Bonzini: "s390: - implement diag318 x86: - Report last CPU for debugging - Emulate smaller MAXPHYADDR in the guest than in the host - .noinstr and tracing fixes from Thomas - nested SVM page table switching optimization and fixes Generic: - Unify shadow MMU cache data structures across architectures" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits) KVM: SVM: Fix sev_pin_memory() error handling KVM: LAPIC: Set the TDCR settable bits KVM: x86: Specify max TDP level via kvm_configure_mmu() KVM: x86/mmu: Rename max_page_level to max_huge_page_level KVM: x86: Dynamically calculate TDP level from max level and MAXPHYADDR KVM: VXM: Remove temporary WARN on expected vs. actual EPTP level mismatch KVM: x86: Pull the PGD's level from the MMU instead of recalculating it KVM: VMX: Make vmx_load_mmu_pgd() static KVM: x86/mmu: Add separate helper for shadow NPT root page role calc KVM: VMX: Drop a duplicate declaration of construct_eptp() KVM: nSVM: Correctly set the shadow NPT root level in its MMU role KVM: Using macros instead of magic values MIPS: KVM: Fix build error caused by 'kvm_run' cleanup KVM: nSVM: remove nonsensical EXITINFO1 adjustment on nested NPF KVM: x86: Add a capability for GUEST_MAXPHYADDR < HOST_MAXPHYADDR support KVM: VMX: optimize #PF injection when MAXPHYADDR does not match KVM: VMX: Add guest physical address check in EPT violation and misconfig KVM: VMX: introduce vmx_need_pf_intercept KVM: x86: update exception bitmap on CPUID changes KVM: x86: rename update_bp_intercept to update_exception_bitmap ...

MIPS: KVM: Fix build error caused by 'kvm_run' cleanup

2020-07-27T13:53:55Z

Commit c34b26b98caca48ec9ee9 ("KVM: MIPS: clean up redundant 'kvm_run' parameters") remove the 'kvm_run' parameter in kvm_mips_complete_mmio_ load(), but forget to update all callers. Fixes: c34b26b98caca48ec9ee9 ("KVM: MIPS: clean up redundant 'kvm_run' parameters") Reported-by: kernel test robot Cc: Tianjia Zhang Signed-off-by: Huacai Chen Message-Id: <1595154207-9787-1-git-send-email-chenhc@lemote.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: Fix build errors for 32bit kernel

2020-07-10T10:15:38Z

Commit dc6d95b153e78ed70b1b2c04a ("KVM: MIPS: Add more MMIO load/store instructions emulation") introduced some 64bit load/store instructions emulation which are unavailable on 32bit platform, and it causes build errors: arch/mips/kvm/emulate.c: In function 'kvm_mips_emulate_store': arch/mips/kvm/emulate.c:1734:6: error: right shift count >= width of type [-Werror] ((vcpu->arch.gprs[rt] >> 56) & 0xff); ^ arch/mips/kvm/emulate.c:1738:6: error: right shift count >= width of type [-Werror] ((vcpu->arch.gprs[rt] >> 48) & 0xffff); ^ arch/mips/kvm/emulate.c:1742:6: error: right shift count >= width of type [-Werror] ((vcpu->arch.gprs[rt] >> 40) & 0xffffff); ^ arch/mips/kvm/emulate.c:1746:6: error: right shift count >= width of type [-Werror] ((vcpu->arch.gprs[rt] >> 32) & 0xffffffff); ^ arch/mips/kvm/emulate.c:1796:6: error: left shift count >= width of type [-Werror] (vcpu->arch.gprs[rt] << 32); ^ arch/mips/kvm/emulate.c:1800:6: error: left shift count >= width of type [-Werror] (vcpu->arch.gprs[rt] << 40); ^ arch/mips/kvm/emulate.c:1804:6: error: left shift count >= width of type [-Werror] (vcpu->arch.gprs[rt] << 48); ^ arch/mips/kvm/emulate.c:1808:6: error: left shift count >= width of type [-Werror] (vcpu->arch.gprs[rt] << 56); ^ cc1: all warnings being treated as errors make[3]: *** [arch/mips/kvm/emulate.o] Error 1 So, use #if defined(CONFIG_64BIT) && defined(CONFIG_KVM_MIPS_VZ) to guard the 64bit load/store instructions emulation. Reported-by: kernel test robot Fixes: dc6d95b153e78ed70b1b2c04a ("KVM: MIPS: Add more MMIO load/store instructions emulation") Signed-off-by: Huacai Chen Message-Id: <1594365797-536-1-git-send-email-chenhc@lemote.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: clean up redundant 'kvm_run' parameters

2020-07-10T08:26:41Z

In the current kvm version, 'kvm_run' has been included in the 'kvm_vcpu' structure. For historical reasons, many kvm-related function parameters retain the 'kvm_run' and 'kvm_vcpu' parameters at the same time. This patch does a unified cleanup of these remaining redundant parameters. Signed-off-by: Tianjia Zhang Reviewed-by: Huacai Chen Message-Id: <20200623131418.31473-5-tianjia.zhang@linux.alibaba.com> Signed-off-by: Paolo Bonzini

KVM: MIPS: fix spelling mistake "Exteneded" -> "Extended"

2020-07-08T20:18:08Z

There is a spelling mistake in a couple of kvm_err messages. Fix them. Signed-off-by: Colin Ian King Message-Id: <20200615082636.7004-1-colin.king@canonical.com> Signed-off-by: Paolo Bonzini