Re: [PATCH v2 05/13] KVM: x86: Protect ioapic_write_indirect() from Spectre-v1/L1TF attacks

[Jim Mattson]

On Wed, Dec 11, 2019 at 12:48 PM Marios Pomonis <pomonis@xxxxxxxxxx> wrote:
>
> This fixes a Spectre-v1/L1TF vulnerability in ioapic_write_indirect().
> This function contains index computations based on the
> (attacker-controlled) IOREGSEL register.
>
> This patch depends on patch
> "KVM: x86: Protect ioapic_read_indirect() from Spectre-v1/L1TF attacks".
>
> Fixes: commit 70f93dae32ac ("KVM: Use temporary variable to shorten lines.")
>
> Signed-off-by: Nick Finco <nifi@xxxxxxxxxx>
> Signed-off-by: Marios Pomonis <pomonis@xxxxxxxxxx>
> Reviewed-by: Andrew Honig <ahonig@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>