| Message ID | 20230607203321.2456329-1-cascardo@canonical.com |
|---|---|
| Headers | show |
| Series | LP: #2023220 | expand |
On Wed, 2023-06-07 at 17:33 -0300, Thadeu Lima de Souza Cascardo wrote: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not > flush > the global TLB entries. This can lead to info leak or undefined > behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y > was picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could > also be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes Acked-by: Cengiz Can <cengiz.can@canonical.com> > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > > -- > 2.34.1 > >
On 6/7/23 2:33 PM, Thadeu Lima de Souza Cascardo wrote: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush > the global TLB entries. This can lead to info leak or undefined behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y was picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could also be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger@canonical.com> On Wed, Jun 7, 2023 at 1:35 PM Thadeu Lima de Souza Cascardo < cascardo@canonical.com> wrote: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush > the global TLB entries. This can lead to info leak or undefined behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y was > picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could also > be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
On 23/06/07 05:33PM, Thadeu Lima de Souza Cascardo wrote: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush > the global TLB entries. This can lead to info leak or undefined behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y was picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could also be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > > -- > 2.34.1 Acked-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Applied to focal, jammy, kinetic, lunar linux master-next, Thanks, - Luke On Wed, Jun 7, 2023 at 1:35 PM Thadeu Lima de Souza Cascardo < cascardo@canonical.com> wrote: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush > the global TLB entries. This can lead to info leak or undefined behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y was > picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could also > be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
Thadeu Lima de Souza Cascardo kirjoitti 7.6.2023 klo 23.33: > [Impact] > When PCIDs are enabled on Alder Lake and Raptor Lake, INVLPG will not flush > the global TLB entries. This can lead to info leak or undefined behavior. > > [Mitigation] > Boot with nopcid on affected systems. > > [Backports] > Clean cherry-pick, except for 5.4, where backport from linux-5.4.y was picked. > > [Test case] > There is no particular test case. > > [Potential regressions] > This affects performance on the affected systems. TLB behavior could also be > affected. > > Dave Hansen (1): > x86/mm: Avoid incomplete Global INVLPG flushes > > arch/x86/include/asm/intel-family.h | 5 +++++ > arch/x86/mm/init.c | 25 +++++++++++++++++++++++++ > 2 files changed, 30 insertions(+) > applied to oem kernels, thanks