Paolo,
I tempted fate with my prior pull stating that it was likely the last.
So here we are. A single, critical fix to protect vCPU flags updates
(which are non-atomic) against preemption, as that'd muck with the vCPU
flags.
If you're busy this week and unable to button this up in a pull to
Linus then please let me know, as we really want this to get in before
6.3 is wrapped up.
Please pull,
Oliver
The following changes since commit e81625218bf7986ba1351a98c43d346b15601d26:
KVM: arm64: Advertise ID_AA64PFR0_EL1.CSV2/3 to protected VMs (2023-04-04 15:52:06 +0000)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.3-4
for you to fetch changes up to 35dcb3ac663a16510afc27ba2725d70c15e012a5:
KVM: arm64: Make vcpu flag updates non-preemptible (2023-04-18 17:08:09 +0000)
----------------------------------------------------------------
KVM/arm64 fixes for 6.3, part #4
- Protect non-atomic RMW operations on vCPU flags against preemption,
as an update to the flags by an intervening preemption could be lost.
----------------------------------------------------------------
Marc Zyngier (1):
KVM: arm64: Make vcpu flag updates non-preemptible
arch/arm64/include/asm/kvm_host.h | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
Paolo, I tempted fate with my prior pull stating that it was likely the last. So here we are. A single, critical fix to protect vCPU flags updates (which are non-atomic) against preemption, as that'd muck with the vCPU flags. If you're busy this week and unable to button this up in a pull to Linus then please let me know, as we really want this to get in before 6.3 is wrapped up. Please pull, Oliver The following changes since commit e81625218bf7986ba1351a98c43d346b15601d26: KVM: arm64: Advertise ID_AA64PFR0_EL1.CSV2/3 to protected VMs (2023-04-04 15:52:06 +0000) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.3-4 for you to fetch changes up to 35dcb3ac663a16510afc27ba2725d70c15e012a5: KVM: arm64: Make vcpu flag updates non-preemptible (2023-04-18 17:08:09 +0000) ---------------------------------------------------------------- KVM/arm64 fixes for 6.3, part #4 - Protect non-atomic RMW operations on vCPU flags against preemption, as an update to the flags by an intervening preemption could be lost. ---------------------------------------------------------------- Marc Zyngier (1): KVM: arm64: Make vcpu flag updates non-preemptible arch/arm64/include/asm/kvm_host.h | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)