mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-12 21:57:43 +00:00
Code Issues Releases Wiki Activity

KVM: s390: Fixes

Browse source 
- Fix random memory corruption when running as guest2 (e.g. KVM in
   LPAR) and starting guest3 (nested KVM) with many CPUs (e.g. a nested
   guest with 200 vcpu)
 - io interrupt delivery counter was not exported
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJanpm7AAoJEBF7vIC1phx8B1QP/2Lw/Buca3aYfDEHMwGMmp1x
 kKOaXGxTtYzKI3JarPmp9mE98c8MOZkiYIxTCaPfapf9AiRhFW2B2idBJHgCXqcQ
 ghrcyYnTaV9kL8gvB/7qZEhvOjZB2pPhmqK1OeVW4cYCQhhNiy8n68r5dD2kyf/U
 bIL4TqXhG4AftWU9iY28HbiPrJ6GGJ0ELJGeiPzwIn4nJCFRCw97qEhw7PeOQ7I2
 gOuyk+k9+cXmU5ftNXpwsBEDuDSoMUAMKiSiqJ/EgUA0uuatn+EeL0ho70MUlQ6M
 xsLRIlGfWl7po9PUq0UIXlF5s4MmpUNYZ9S/MjJBgYJzosGdn26scaVXEP+D8cJ6
 teJgmcBiCx44LinI4yu7hDls/EUSDhKP5cjwEtBRR4ck8q6n+hY7gjAPwzEumA07
 jDfJbB0S09SXASYrjL2c7+Lt0zGXB8pdWPLYPQazh7MqIWo8iiWk4fRYZYja2nmt
 ZDagh9BZrq/y7Rigz9etNioMA9Lus1DphW600t/5EMbtcUlI2jQWrKqNdMTRKi2R
 ElYoL/UrCtmkv5Q2Gv7RrEn4Rw3EY1OqZ8WeOkLxNUlXlW8nPgYYTmFi/CY44d9H
 9sV586au6ECu9EBPuAMPL8javGRwZbE5cSGZVculrj4ZNRll3EmBnn3/ZNPnimWo
 k/tf5mxA0DhDxcYCMcpB
 =mxZT
 -----END PGP SIGNATURE-----

Merge tag 'kvm-s390-master-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux

KVM: s390: Fixes

- Fix random memory corruption when running as guest2 (e.g. KVM in
  LPAR) and starting guest3 (nested KVM) with many CPUs (e.g. a nested
  guest with 200 vcpu)
- io interrupt delivery counter was not exported
This commit is contained in:
Radim Krčmář 2018-03-06 17:42:28 +01:00
commit 45e3b4759d
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/s390/kvm/kvm-s390.c
View file

@ -86,6 +86,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "deliver_prefix_signal", VCPU_STAT(deliver_prefix_signal) },
{ "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) },
{ "deliver_program_interruption", VCPU_STAT(deliver_program_int) },
{ "deliver_io_interrupt", VCPU_STAT(deliver_io_int) },
{ "exit_wait_state", VCPU_STAT(exit_wait_state) },
{ "instruction_epsw", VCPU_STAT(instruction_epsw) },
{ "instruction_gs", VCPU_STAT(instruction_gs) },
@ -2146,6 +2147,7 @@ static void sca_add_vcpu(struct kvm_vcpu *vcpu)
/* we still need the basic sca for the ipte control */
vcpu->arch.sie_block->scaoh = (__u32)(((__u64)sca) >> 32);
vcpu->arch.sie_block->scaol = (__u32)(__u64)sca;
return;
}
read_lock(&vcpu->kvm->arch.sca_lock);
if (vcpu->kvm->arch.use_esca) {