| Message ID | 9bc4b24a55c42fa49125cae0304c8b0f208550b1.1717313173.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] media: venus: Constify struct dec_bufsize_ops and enc_bufsize_ops | expand |
On 02/06/2024 15:27, Christophe JAILLET wrote: > "struct dec_bufsize_ops and "struct enc_bufsize_ops" are not modified in > this driver. > > Constifying these structures moves some data to a read-only section, so > increase overall security. > > On a x86_64, with allmodconfig: > Before: > text data bss dec hex filename > 12494 822 0 13316 3404 drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.o > > After: > text data bss dec hex filename > 12766 566 0 13332 3414 drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.o > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> > --- > Changes in v2: > - Add missing prefix in the subject > > v1: https://lore.kernel.org/all/9bc4b28a55c42fa4a125c3e03d4c8b0f208550b4.1717313173.git.christophe.jaillet@wanadoo.fr/ > > While looking at lore to find the reference above, I found that this > patch had already been sent by Rikard Falkeborn <rikard.falkeborn@gmail.com> > See: https://lore.kernel.org/all/20211212123534.4473-1-rikard.falkeborn@gmail.com/ > > So, if applied, credits should be for him. > So feel free to add a Co-Developed-by:, Reported-by:, Suggested-by: or > whatever makes sense, including removing my Signed-off-by: to put his if > it sounds better to do it this way. > > .../platform/qcom/venus/hfi_plat_bufs_v6.c | 20 +++++++++---------- > 1 file changed, 10 insertions(+), 10 deletions(-) > > diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c > index f5a655973c08..6289166786ec 100644 > --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c > +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c > @@ -1063,51 +1063,51 @@ struct enc_bufsize_ops { > u32 (*persist)(void); > }; > > -static struct dec_bufsize_ops dec_h264_ops = { > +static const struct dec_bufsize_ops dec_h264_ops = { > .scratch = h264d_scratch_size, > .scratch1 = h264d_scratch1_size, > .persist1 = h264d_persist1_size, > }; > > -static struct dec_bufsize_ops dec_h265_ops = { > +static const struct dec_bufsize_ops dec_h265_ops = { > .scratch = h265d_scratch_size, > .scratch1 = h265d_scratch1_size, > .persist1 = h265d_persist1_size, > }; > > -static struct dec_bufsize_ops dec_vp8_ops = { > +static const struct dec_bufsize_ops dec_vp8_ops = { > .scratch = vpxd_scratch_size, > .scratch1 = vp8d_scratch1_size, > .persist1 = vp8d_persist1_size, > }; > > -static struct dec_bufsize_ops dec_vp9_ops = { > +static const struct dec_bufsize_ops dec_vp9_ops = { > .scratch = vpxd_scratch_size, > .scratch1 = vp9d_scratch1_size, > .persist1 = vp9d_persist1_size, > }; > > -static struct dec_bufsize_ops dec_mpeg2_ops = { > +static const struct dec_bufsize_ops dec_mpeg2_ops = { > .scratch = mpeg2d_scratch_size, > .scratch1 = mpeg2d_scratch1_size, > .persist1 = mpeg2d_persist1_size, > }; > > -static struct enc_bufsize_ops enc_h264_ops = { > +static const struct enc_bufsize_ops enc_h264_ops = { > .scratch = h264e_scratch_size, > .scratch1 = h264e_scratch1_size, > .scratch2 = enc_scratch2_size, > .persist = enc_persist_size, > }; > > -static struct enc_bufsize_ops enc_h265_ops = { > +static const struct enc_bufsize_ops enc_h265_ops = { > .scratch = h265e_scratch_size, > .scratch1 = h265e_scratch1_size, > .scratch2 = enc_scratch2_size, > .persist = enc_persist_size, > }; > > -static struct enc_bufsize_ops enc_vp8_ops = { > +static const struct enc_bufsize_ops enc_vp8_ops = { > .scratch = vp8e_scratch_size, > .scratch1 = vp8e_scratch1_size, > .scratch2 = enc_scratch2_size, > @@ -1186,7 +1186,7 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype, > u32 codec = params->codec; > u32 width = params->width, height = params->height, out_min_count; > u32 out_width = params->out_width, out_height = params->out_height; > - struct dec_bufsize_ops *dec_ops; > + const struct dec_bufsize_ops *dec_ops; > bool is_secondary_output = params->dec.is_secondary_output; > bool is_interlaced = params->dec.is_interlaced; > u32 max_mbs_per_frame = params->dec.max_mbs_per_frame; > @@ -1260,7 +1260,7 @@ static int bufreq_enc(struct hfi_plat_buffers_params *params, u32 buftype, > struct hfi_buffer_requirements *bufreq) > { > enum hfi_version version = params->version; > - struct enc_bufsize_ops *enc_ops; > + const struct enc_bufsize_ops *enc_ops; > u32 width = params->width; > u32 height = params->height; > bool is_tenbit = params->enc.is_tenbit; Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
diff --git a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c index f5a655973c08..6289166786ec 100644 --- a/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c +++ b/drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.c @@ -1063,51 +1063,51 @@ struct enc_bufsize_ops { u32 (*persist)(void); }; -static struct dec_bufsize_ops dec_h264_ops = { +static const struct dec_bufsize_ops dec_h264_ops = { .scratch = h264d_scratch_size, .scratch1 = h264d_scratch1_size, .persist1 = h264d_persist1_size, }; -static struct dec_bufsize_ops dec_h265_ops = { +static const struct dec_bufsize_ops dec_h265_ops = { .scratch = h265d_scratch_size, .scratch1 = h265d_scratch1_size, .persist1 = h265d_persist1_size, }; -static struct dec_bufsize_ops dec_vp8_ops = { +static const struct dec_bufsize_ops dec_vp8_ops = { .scratch = vpxd_scratch_size, .scratch1 = vp8d_scratch1_size, .persist1 = vp8d_persist1_size, }; -static struct dec_bufsize_ops dec_vp9_ops = { +static const struct dec_bufsize_ops dec_vp9_ops = { .scratch = vpxd_scratch_size, .scratch1 = vp9d_scratch1_size, .persist1 = vp9d_persist1_size, }; -static struct dec_bufsize_ops dec_mpeg2_ops = { +static const struct dec_bufsize_ops dec_mpeg2_ops = { .scratch = mpeg2d_scratch_size, .scratch1 = mpeg2d_scratch1_size, .persist1 = mpeg2d_persist1_size, }; -static struct enc_bufsize_ops enc_h264_ops = { +static const struct enc_bufsize_ops enc_h264_ops = { .scratch = h264e_scratch_size, .scratch1 = h264e_scratch1_size, .scratch2 = enc_scratch2_size, .persist = enc_persist_size, }; -static struct enc_bufsize_ops enc_h265_ops = { +static const struct enc_bufsize_ops enc_h265_ops = { .scratch = h265e_scratch_size, .scratch1 = h265e_scratch1_size, .scratch2 = enc_scratch2_size, .persist = enc_persist_size, }; -static struct enc_bufsize_ops enc_vp8_ops = { +static const struct enc_bufsize_ops enc_vp8_ops = { .scratch = vp8e_scratch_size, .scratch1 = vp8e_scratch1_size, .scratch2 = enc_scratch2_size, @@ -1186,7 +1186,7 @@ static int bufreq_dec(struct hfi_plat_buffers_params *params, u32 buftype, u32 codec = params->codec; u32 width = params->width, height = params->height, out_min_count; u32 out_width = params->out_width, out_height = params->out_height; - struct dec_bufsize_ops *dec_ops; + const struct dec_bufsize_ops *dec_ops; bool is_secondary_output = params->dec.is_secondary_output; bool is_interlaced = params->dec.is_interlaced; u32 max_mbs_per_frame = params->dec.max_mbs_per_frame; @@ -1260,7 +1260,7 @@ static int bufreq_enc(struct hfi_plat_buffers_params *params, u32 buftype, struct hfi_buffer_requirements *bufreq) { enum hfi_version version = params->version; - struct enc_bufsize_ops *enc_ops; + const struct enc_bufsize_ops *enc_ops; u32 width = params->width; u32 height = params->height; bool is_tenbit = params->enc.is_tenbit;
"struct dec_bufsize_ops and "struct enc_bufsize_ops" are not modified in this driver. Constifying these structures moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig: Before: text data bss dec hex filename 12494 822 0 13316 3404 drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.o After: text data bss dec hex filename 12766 566 0 13332 3414 drivers/media/platform/qcom/venus/hfi_plat_bufs_v6.o Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- Changes in v2: - Add missing prefix in the subject v1: https://lore.kernel.org/all/9bc4b28a55c42fa4a125c3e03d4c8b0f208550b4.1717313173.git.christophe.jaillet@wanadoo.fr/ While looking at lore to find the reference above, I found that this patch had already been sent by Rikard Falkeborn <rikard.falkeborn@gmail.com> See: https://lore.kernel.org/all/20211212123534.4473-1-rikard.falkeborn@gmail.com/ So, if applied, credits should be for him. So feel free to add a Co-Developed-by:, Reported-by:, Suggested-by: or whatever makes sense, including removing my Signed-off-by: to put his if it sounds better to do it this way. .../platform/qcom/venus/hfi_plat_bufs_v6.c | 20 +++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)