[AMD Official Use Only - General]
Reviewed-by: Stanley.Yang <stanley.y...@amd.com>
Regards,
Stanley
> -----Original Message-----
> From: Zhou1, Tao <tao.zh...@amd.com>
> Sent: Wednesday, February 22, 2023 10:53 AM
> To: amd-gfx@lists.freedesktop.org; Zhang, Hawking
> <hawking.zh...@amd.com>; Yang, Stanley <stanley.y...@amd.com>; Chai,
> Thomas <yipeng.c...@amd.com>; Li, Candice <candice...@amd.com>; Lazar,
> Lijo <lijo.la...@amd.com>
> Subject: RE: [PATCH 2/2] drm/amdgpu: exclude duplicate pages from UMC
> RAS UE count
>
> Ping...
>
> > -----Original Message-----
> > From: Zhou1, Tao <tao.zh...@amd.com>
> > Sent: Monday, February 20, 2023 11:17 AM
> > To: amd-gfx@lists.freedesktop.org; Zhang, Hawking
> > <hawking.zh...@amd.com>; Yang, Stanley <stanley.y...@amd.com>;
> Chai,
> > Thomas <yipeng.c...@amd.com>; Li, Candice <candice...@amd.com>;
> Lazar,
> > Lijo <lijo.la...@amd.com>
> > Cc: Zhou1, Tao <tao.zh...@amd.com>
> > Subject: [PATCH 2/2] drm/amdgpu: exclude duplicate pages from UMC RAS
> > UE count
> >
> > If a UMC bad page is reserved but not freed by an application, the
> > application may trigger uncorrectable error repeatly by accessing the page.
> >
> > v2: add specific function to do the check.
> > v3: remove duplicate pages, calculate new added bad page number.
> > v4: reuse save_bad_pages to calculate new added bad page number.
> >
> > Signed-off-by: Tao Zhou <tao.zh...@amd.com>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 16 +++++++++++++---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 3 ++-
> > drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c | 5 +++--
> > 3 files changed, 18 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > index 6e543558386d..5c02c6c9f773 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > @@ -176,7 +176,7 @@ static int amdgpu_reserve_page_direct(struct
> > amdgpu_device *adev, uint64_t addre
> > if (amdgpu_bad_page_threshold != 0) {
> > amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
> > err_data.err_addr_cnt);
> > - amdgpu_ras_save_bad_pages(adev);
> > + amdgpu_ras_save_bad_pages(adev, NULL);
> > }
> >
> > dev_warn(adev->dev, "WARNING: THIS IS ONLY FOR TEST PURPOSES
> AND
> > WILL CORRUPT RAS EEPROM\n"); @@ -2084,22 +2084,32 @@ int
> > amdgpu_ras_add_bad_pages(struct amdgpu_device *adev,
> > /*
> > * write error record array to eeprom, the function should be
> > * protected by recovery_lock
> > + * new_cnt: new added UE count, excluding reserved bad pages, can be
> > + NULL
> > */
> > -int amdgpu_ras_save_bad_pages(struct amdgpu_device *adev)
> > +int amdgpu_ras_save_bad_pages(struct amdgpu_device *adev,
> > + unsigned long *new_cnt)
> > {
> > struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
> > struct ras_err_handler_data *data;
> > struct amdgpu_ras_eeprom_control *control;
> > int save_count;
> >
> > - if (!con || !con->eh_data)
> > + if (!con || !con->eh_data) {
> > + if (new_cnt)
> > + *new_cnt = 0;
> > +
> > return 0;
> > + }
> >
> > mutex_lock(&con->recovery_lock);
> > control = &con->eeprom_control;
> > data = con->eh_data;
> > save_count = data->count - control->ras_num_recs;
> > mutex_unlock(&con->recovery_lock);
> > +
> > + if (new_cnt)
> > + *new_cnt = save_count / adev->umc.retire_unit;
> > +
> > /* only new entries are saved */
> > if (save_count > 0) {
> > if (amdgpu_ras_eeprom_append(control,
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> > index f2ad999993f6..ef38f4c93df0 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> > @@ -547,7 +547,8 @@ int amdgpu_ras_query_error_count(struct
> > amdgpu_device *adev, int amdgpu_ras_add_bad_pages(struct
> > amdgpu_device *adev,
> > struct eeprom_table_record *bps, int pages);
> >
> > -int amdgpu_ras_save_bad_pages(struct amdgpu_device *adev);
> > +int amdgpu_ras_save_bad_pages(struct amdgpu_device *adev,
> > + unsigned long *new_cnt);
> >
> > static inline enum ta_ras_block
> > amdgpu_ras_block_to_ta(enum amdgpu_ras_block block) { diff --git
> > a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
> > index 1c7fcb4f2380..7c6fc3214339 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_umc.c
> > @@ -68,7 +68,7 @@ int amdgpu_umc_page_retirement_mca(struct
> > amdgpu_device *adev,
> > if (amdgpu_bad_page_threshold != 0) {
> > amdgpu_ras_add_bad_pages(adev, err_data.err_addr,
> > err_data.err_addr_cnt);
> > - amdgpu_ras_save_bad_pages(adev);
> > + amdgpu_ras_save_bad_pages(adev, NULL);
> > }
> >
> > out:
> > @@ -147,7 +147,8 @@ static int amdgpu_umc_do_page_retirement(struct
> > amdgpu_device *adev,
> > err_data->err_addr_cnt) {
> > amdgpu_ras_add_bad_pages(adev, err_data-
> >err_addr,
> > err_data->err_addr_cnt);
> > - amdgpu_ras_save_bad_pages(adev);
> > +
> > + amdgpu_ras_save_bad_pages(adev, &(err_data-
> > >ue_count));
> >
> > amdgpu_dpm_send_hbm_bad_pages_num(adev,
> con-
> > >eeprom_control.ras_num_recs);
> >
> > --
> > 2.35.1
