Paolo & Radim,
Immediately after I sent my previous pull request, I saw that Suraj
had posted a patch that advertises a new mitigation for one of the
spectre vulnerabilities to userspace. The code for the host to know
about and use this new mitigation went into 4.19. Since the patch is
low-risk and security-related, I would like to get it into 5.1. With
this patch and a related QEMU patch, guests will be able to use this
new mitigation on machines that support it.
So, please do a pull from my kvm-ppc-next-5.1-3 tag to get this
commit. (If you haven't already pulled the 5.1-2 tag then you will
get the compile fix as well, of course.)
Thanks,
Paul.
The following changes since commit e74d53e30e2927fa5b223296ac7922baf15ea89a:
KVM: PPC: Fix compilation when KVM is not enabled (2019-02-27 09:14:44 +1100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc tags/kvm-ppc-next-5.1-3
for you to fetch changes up to 2b57ecd0208f7ac0b20b1b171698f027481a39f6:
KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char() (2019-03-01 15:11:14 +1100)
----------------------------------------------------------------
Third PPC KVM update for 5.1
- Tell userspace about whether a particular hardware workaround for
one of the Spectre vulnerabilities is available, so that userspace
can inform the guest.
----------------------------------------------------------------
Suraj Jitindar Singh (1):
KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char()
arch/powerpc/include/uapi/asm/kvm.h | 2 ++
arch/powerpc/kvm/powerpc.c | 18 ++++++++++++++----
2 files changed, 16 insertions(+), 4 deletions(-)
