Messages in this thread | | | Date | Tue, 6 Feb 2024 13:00:44 +0100 | Subject | Re: [Patch] memory: tegra: Skip SID override from Guest VM | From | Krzysztof Kozlowski <> |
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On 06/02/2024 12:48, Sumit Gupta wrote: > MC SID register access is restricted for Guest VM. > So, skip the SID override programming from the Guest VM. > > Signed-off-by: Sumit Gupta <sumitg@nvidia.com> > --- > drivers/memory/tegra/tegra186.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c > index 1b3183951bfe..df441896b69d 100644 > --- a/drivers/memory/tegra/tegra186.c > +++ b/drivers/memory/tegra/tegra186.c > @@ -10,6 +10,7 @@ > #include <linux/of.h> > #include <linux/of_platform.h> > #include <linux/platform_device.h> > +#include <asm/virt.h>
Are you sure this still compile tests?
> > #include <soc/tegra/mc.h> > > @@ -118,6 +119,11 @@ static int tegra186_mc_probe_device(struct tegra_mc *mc, struct device *dev) > unsigned int i, index = 0; > u32 sid; > > + if (!is_kernel_in_hyp_mode()) { > + dev_dbg(mc->dev, "Register access not allowed\n");
Doesn't this depend on hypervisor?
> + return 0; > + } > + > if (!tegra_dev_iommu_get_stream_id(dev, &sid)) > return 0;
Best regards, Krzysztof
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