[AMD Official Use Only - AMD Internal Distribution Only] Reviewed-By: Shaoyun liu <[email protected]>
-----Original Message----- From: amd-gfx <[email protected]> On Behalf Of Alex Deucher Sent: Friday, November 14, 2025 9:42 AM To: Chen, Michael <[email protected]> Cc: [email protected]; Deucher, Alexander <[email protected]> Subject: Re: [PATCH] drm/amd/amdgpu: reserve vm invalidation engine for uni_mes On Thu, Nov 13, 2025 at 1:10 PM Michael Chen <[email protected]> wrote: > > Reserve vm invalidation engine 6 when uni_mes enabled. It is used in > processing tlb flush request from host. > > Signed-off-by: Michael Chen <[email protected]> Acked-by: Alex Deucher <[email protected]> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c > index 97b562a79ea8..4814be022f32 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c > @@ -597,6 +597,9 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device > *adev) > /* reserve engine 5 for firmware */ > if (adev->enable_mes) > vm_inv_engs[i] &= ~(1 << 5); > + /* reserve engine 6 for uni mes */ > + if (adev->enable_uni_mes) > + vm_inv_engs[i] &= ~(1 << 6); > /* reserve mmhub engine 3 for firmware */ > if (adev->enable_umsch_mm) > vm_inv_engs[i] &= ~(1 << 3); > -- > 2.34.1 >
