Re: [PATCH v2 stable v4.4 2/2] Documentation: Add nospectre_v1 parameter
On Tue, Apr 30, 2019 at 03:42:27PM +0300, Diana Craciun wrote: > commit 26cb1f36c43ee6e89d2a9f48a5a7500d5248f836 upstream. > > Currently only supported on powerpc. > > Signed-off-by: Diana Craciun > Signed-off-by: Michael Ellerman > --- > Documentation/kernel-parameters.txt | 4 > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/kernel-parameters.txt > b/Documentation/kernel-parameters.txt > index f0bdf78420a0..3ff87d5d6fea 100644 > --- a/Documentation/kernel-parameters.txt > +++ b/Documentation/kernel-parameters.txt > @@ -2449,6 +2449,10 @@ bytes respectively. Such letter suffixes can also be > entirely omitted. > legacy floating-point registers on task switch. > > nohugeiomap [KNL,x86] Disable kernel huge I/O mappings. > + > + nospectre_v1[PPC] Disable mitigations for Spectre Variant 1 (bounds > + check bypass). With this option data leaks are possible > + in the system. > > nospectre_v2[X86,PPC_FSL_BOOK3E] Disable all mitigations for the > Spectre variant 2 > (indirect branch prediction) vulnerability. System may > -- > 2.17.1 > Both of these patches needed to be added to a bunch of the stable trees, so I've now done that. thanks, greg k-h
Re: [PATCH v2 stable v4.4 2/2] Documentation: Add nospectre_v1 parameter
On Tue, Apr 30, 2019 at 03:42:27PM +0300, Diana Craciun wrote: > commit 26cb1f36c43ee6e89d2a9f48a5a7500d5248f836 upstream. > > Currently only supported on powerpc. > > Signed-off-by: Diana Craciun > Signed-off-by: Michael Ellerman > --- > Documentation/kernel-parameters.txt | 4 > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/kernel-parameters.txt > b/Documentation/kernel-parameters.txt > index f0bdf78420a0..3ff87d5d6fea 100644 > --- a/Documentation/kernel-parameters.txt > +++ b/Documentation/kernel-parameters.txt > @@ -2449,6 +2449,10 @@ bytes respectively. Such letter suffixes can also be > entirely omitted. > legacy floating-point registers on task switch. > > nohugeiomap [KNL,x86] Disable kernel huge I/O mappings. > + Trailing whitespace :( Fix up your editor to flag this as RED or something. I'll go fix it up...
[PATCH v2 stable v4.4 2/2] Documentation: Add nospectre_v1 parameter
commit 26cb1f36c43ee6e89d2a9f48a5a7500d5248f836 upstream. Currently only supported on powerpc. Signed-off-by: Diana Craciun Signed-off-by: Michael Ellerman --- Documentation/kernel-parameters.txt | 4 1 file changed, 4 insertions(+) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index f0bdf78420a0..3ff87d5d6fea 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2449,6 +2449,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. legacy floating-point registers on task switch. nohugeiomap [KNL,x86] Disable kernel huge I/O mappings. + + nospectre_v1[PPC] Disable mitigations for Spectre Variant 1 (bounds + check bypass). With this option data leaks are possible + in the system. nospectre_v2[X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2 (indirect branch prediction) vulnerability. System may -- 2.17.1
