Message ID | cover.1533653670.git.joseph.salisbury@canonical.com |
---|---|
Headers | show |
Series | x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths | expand |
On 2018-08-14 16:14:08 , Joseph Salisbury wrote: > BugLink: https://bugs.launchpad.net/bugs/1777338 > > == SRU Justification == > Mainline commit 1f50ddb4f418 introduced a regression. That commit added > speculative_store_bypass_ht_init() to the per-CPU initialization sequence. > However, speculative_store_bypass_ht_init() needs to be called on each CPU for > PV guests, as well. > > The regresssion prevents systems from booting. > > The patch to fix this regression has also been cc'd to upstream stable, > but it has not landed in Bionic as of yet. > > == Fix == > 74899d92e666 ("x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths") > > == Regression Potential == > Low. This patch fixes a current regressionThis patch has also been > submitted to upstream stable, so it has had additional upstream review. > > == Test Case == > A test kernel was built with this patch and tested by the original bug reporter. > The bug reporter states the test kernel resolved the bug. > > > Juergen Gross (1): > x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths > > arch/x86/xen/smp_pv.c | 5 +++++ > 1 file changed, 5 insertions(+) > Acked-by: Khalid Elmously <khalid.elmously@canonical.com>
..to bionic/master-next On 2018-08-14 16:14:08 , Joseph Salisbury wrote: > BugLink: https://bugs.launchpad.net/bugs/1777338 > > == SRU Justification == > Mainline commit 1f50ddb4f418 introduced a regression. That commit added > speculative_store_bypass_ht_init() to the per-CPU initialization sequence. > However, speculative_store_bypass_ht_init() needs to be called on each CPU for > PV guests, as well. > > The regresssion prevents systems from booting. > > The patch to fix this regression has also been cc'd to upstream stable, > but it has not landed in Bionic as of yet. > > == Fix == > 74899d92e666 ("x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths") > > == Regression Potential == > Low. This patch fixes a current regressionThis patch has also been > submitted to upstream stable, so it has had additional upstream review. > > == Test Case == > A test kernel was built with this patch and tested by the original bug reporter. > The bug reporter states the test kernel resolved the bug. > > > Juergen Gross (1): > x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths > > arch/x86/xen/smp_pv.c | 5 +++++ > 1 file changed, 5 insertions(+) > > -- > 2.7.4 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team