| Message ID | 1501285073-2215-2-git-send-email-zuban32s@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 29/07/2017 2:37, Aleksandr Bezzubikov wrote: > Unmask previously masked SHPC feature in _OSC method. > > Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com> > --- > hw/i386/acpi-build.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > index 6b7bade..2ab32f9 100644 > --- a/hw/i386/acpi-build.c > +++ b/hw/i386/acpi-build.c > @@ -1848,9 +1848,9 @@ static Aml *build_q35_osc_method(void) > > /* > * Always allow native PME, AER (no dependencies) > - * Never allow SHPC (no SHPC controller in this system) > + * Allow SHPC (PCI bridges can have SHPC controller) > */ > - aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl)); > + aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); > > if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); > /* Unknown revision */ > Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Thanks, Marcel
On Sat, Jul 29, 2017 at 02:37:49AM +0300, Aleksandr Bezzubikov wrote: > Unmask previously masked SHPC feature in _OSC method. > > Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com> This does not do what the subject says - it enables SHPC unconditionally. And I think it will actually break ACPI hotplug for the PC unless we add an interface to disable ACPI hotplug and enable SHPC. Pls limit to Q35 only. > --- > hw/i386/acpi-build.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > index 6b7bade..2ab32f9 100644 > --- a/hw/i386/acpi-build.c > +++ b/hw/i386/acpi-build.c > @@ -1848,9 +1848,9 @@ static Aml *build_q35_osc_method(void) > > /* > * Always allow native PME, AER (no dependencies) > - * Never allow SHPC (no SHPC controller in this system) > + * Allow SHPC (PCI bridges can have SHPC controller) > */ > - aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl)); > + aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); > > if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); > /* Unknown revision */ > -- > 2.7.4
чт, 3 авг. 2017 г. в 15:52, Michael S. Tsirkin <mst@redhat.com>: > On Sat, Jul 29, 2017 at 02:37:49AM +0300, Aleksandr Bezzubikov wrote: > > Unmask previously masked SHPC feature in _OSC method. > > > > Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com> > > This does not do what the subject says - it enables > SHPC unconditionally. And I think it will actually break > ACPI hotplug for the PC unless we add an interface to > disable ACPI hotplug and enable SHPC. > > Pls limit to Q35 only. > > But this function (build_q35_osc_method) is called only for q35, isn't it? > --- > > hw/i386/acpi-build.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > > index 6b7bade..2ab32f9 100644 > > --- a/hw/i386/acpi-build.c > > +++ b/hw/i386/acpi-build.c > > @@ -1848,9 +1848,9 @@ static Aml *build_q35_osc_method(void) > > > > /* > > * Always allow native PME, AER (no dependencies) > > - * Never allow SHPC (no SHPC controller in this system) > > + * Allow SHPC (PCI bridges can have SHPC controller) > > */ > > - aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl)); > > + aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); > > > > if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); > > /* Unknown revision */ > > -- > > 2.7.4 >
On 03/08/2017 15:52, Michael S. Tsirkin wrote: > On Sat, Jul 29, 2017 at 02:37:49AM +0300, Aleksandr Bezzubikov wrote: >> Unmask previously masked SHPC feature in _OSC method. >> >> Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com> > Hi Michael, > This does not do what the subject says - it enables > SHPC unconditionally. And I think it will actually break > ACPI hotplug for the PC unless we add an interface to > disable ACPI hotplug and enable SHPC. > > Pls limit to Q35 only. > The code is inside build_q35_osc_method, I don't understand how it affects the PC machine. Thanks, Marcel >> --- >> hw/i386/acpi-build.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c >> index 6b7bade..2ab32f9 100644 >> --- a/hw/i386/acpi-build.c >> +++ b/hw/i386/acpi-build.c >> @@ -1848,9 +1848,9 @@ static Aml *build_q35_osc_method(void) >> >> /* >> * Always allow native PME, AER (no dependencies) >> - * Never allow SHPC (no SHPC controller in this system) >> + * Allow SHPC (PCI bridges can have SHPC controller) >> */ >> - aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl)); >> + aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); >> >> if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); >> /* Unknown revision */ >> -- >> 2.7.4
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 6b7bade..2ab32f9 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1848,9 +1848,9 @@ static Aml *build_q35_osc_method(void) /* * Always allow native PME, AER (no dependencies) - * Never allow SHPC (no SHPC controller in this system) + * Allow SHPC (PCI bridges can have SHPC controller) */ - aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl)); + aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); /* Unknown revision */
Unmask previously masked SHPC feature in _OSC method. Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com> --- hw/i386/acpi-build.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)