aboutsummaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-22 17:30:06 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-22 17:30:06 +0100
commit528985117126f11beea339cf39120ee99da04cd2 (patch)
tree85c9f3b2211fccd7ebe27ca07f6a36b3df21a17e /virt
parent84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d (diff)
parent4debef5510071032c6d5dace31ca1cc42a120073 (diff)
downloadlinux-aarch64-528985117126f11beea339cf39120ee99da04cd2.tar.gz
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas: "Apart from some new arm64 features and clean-ups, this also contains the core mmu_gather changes for tracking the levels of the page table being cleared and a minor update to the generic compat_sys_sigaltstack() introducing COMPAT_SIGMINSKSZ. Summary: - Core mmu_gather changes which allow tracking the levels of page-table being cleared together with the arm64 low-level flushing routines - Support for the new ARMv8.5 PSTATE.SSBS bit which can be used to mitigate Spectre-v4 dynamically without trapping to EL3 firmware - Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack - Optimise emulation of MRS instructions to ID_* registers on ARMv8.4 - Support for Common Not Private (CnP) translations allowing threads of the same CPU to share the TLB entries - Accelerated crc32 routines - Move swapper_pg_dir to the rodata section - Trap WFI instruction executed in user space - ARM erratum 1188874 workaround (arch_timer) - Miscellaneous fixes and clean-ups" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (78 commits) arm64: KVM: Guests can skip __install_bp_hardening_cb()s HYP work arm64: cpufeature: Trap CTR_EL0 access only where it is necessary arm64: cpufeature: Fix handling of CTR_EL0.IDC field arm64: cpufeature: ctr: Fix cpu capability check for late CPUs Documentation/arm64: HugeTLB page implementation arm64: mm: Use __pa_symbol() for set_swapper_pgd() arm64: Add silicon-errata.txt entry for ARM erratum 1188873 Revert "arm64: uaccess: implement unsafe accessors" arm64: mm: Drop the unused cpu parameter MAINTAINERS: fix bad sdei paths arm64: mm: Use #ifdef for the __PAGETABLE_P?D_FOLDED defines arm64: Fix typo in a comment in arch/arm64/mm/kasan_init.c arm64: xen: Use existing helper to check interrupt status arm64: Use daifflag_restore after bp_hardening arm64: daifflags: Use irqflags functions for daifflags arm64: arch_timer: avoid unused function warning arm64: Trap WFI executed in userspace arm64: docs: Document SSBS HWCAP arm64: docs: Fix typos in ELF hwcaps arm64/kprobes: remove an extra semicolon in arch_prepare_kprobe ...
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/arm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index c92053bc3f96..150c8a69cdaf 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -496,7 +496,7 @@ static bool need_new_vmid_gen(struct kvm *kvm)
static void update_vttbr(struct kvm *kvm)
{
phys_addr_t pgd_phys;
- u64 vmid;
+ u64 vmid, cnp = kvm_cpu_has_cnp() ? VTTBR_CNP_BIT : 0;
bool new_gen;
read_lock(&kvm_vmid_lock);
@@ -546,7 +546,7 @@ static void update_vttbr(struct kvm *kvm)
pgd_phys = virt_to_phys(kvm->arch.pgd);
BUG_ON(pgd_phys & ~VTTBR_BADDR_MASK);
vmid = ((u64)(kvm->arch.vmid) << VTTBR_VMID_SHIFT) & VTTBR_VMID_MASK(kvm_vmid_bits);
- kvm->arch.vttbr = kvm_phys_to_vttbr(pgd_phys) | vmid;
+ kvm->arch.vttbr = kvm_phys_to_vttbr(pgd_phys) | vmid | cnp;
write_unlock(&kvm_vmid_lock);
}