<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 15 Samh 2016, at 09:44, Emil Velikov <<a href="mailto:emil.l.velikov@gmail.com" class="">emil.l.velikov@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">On 15 November 2016 at 15:42, David Herrmann <</span><a href="mailto:dh.herrmann@gmail.com" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">dh.herrmann@gmail.com</a><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">> wrote:</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Hi<br class=""><br class="">On Tue, Nov 15, 2016 at 4:24 PM, Emil Velikov <<a href="mailto:emil.l.velikov@gmail.com" class="">emil.l.velikov@gmail.com</a>> wrote:<br class=""><blockquote type="cite" class="">If we do not use a render node we must authenticate. Doing the extra<br class="">GetClient calls/ioctls does not help much, so don't bother.<br class=""><br class="">Cc: David Herrmann <<a href="mailto:dh.herrmann@gmail.com" class="">dh.herrmann@gmail.com</a>><br class="">Cc: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch" class="">daniel.vetter@ffwll.ch</a>><br class="">Signed-off-by: Emil Velikov <<a href="mailto:emil.l.velikov@gmail.com" class="">emil.l.velikov@gmail.com</a>><br class="">---<br class="">David, Daniel, I believe things are perfectly reasonable on kernel side.<br class="">If not please shout.<br class="">---<br class="">va/drm/va_drm.c | 8 ++------<br class="">va/drm/va_drm_auth.c | 35 -----------------------------------<br class="">va/drm/va_drm_auth.h | 4 ----<br class="">3 files changed, 2 insertions(+), 45 deletions(-)<br class=""><br class="">diff --git a/va/drm/va_drm.c b/va/drm/va_drm.c<br class="">index 08071cf..59e33fa 100644<br class="">--- a/va/drm/va_drm.c<br class="">+++ b/va/drm/va_drm.c<br class="">@@ -74,12 +74,8 @@ va_DisplayContextGetDriverName(<br class=""> if (ret < 0)<br class=""> return VA_STATUS_ERROR_OPERATION_FAILED;<br class=""><br class="">- if (!va_drm_is_authenticated(drm_state->fd)) {<br class="">- if (!va_drm_authenticate(drm_state->fd, magic))<br class="">- return VA_STATUS_ERROR_OPERATION_FAILED;<br class="">- if (!va_drm_is_authenticated(drm_state->fd))<br class="">- return VA_STATUS_ERROR_OPERATION_FAILED;<br class="">- }<br class="">+ if (!va_drm_authenticate(drm_state->fd, magic))<br class="">+ return VA_STATUS_ERROR_OPERATION_FAILED;<br class=""></blockquote><br class="">va_drm_authenticate() on native DRM returns EINVAL (via<br class="">drmAuthMagic()) if already authenticated. Hence, this solution only<br class="">works if you can guarantee that @drm_state->fd is not already<br class="">authenticated.<br class=""><br class="">I don't know the VA internals, so cannot see whether this matters.<br class=""><br class=""></blockquote><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">The API (vaGetDisplayDRM) isn't explicit if the device has to be auth.</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">yet I'm leaning towards no. Not to mention that every user of vaapi</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">[that I know of] does not do auth.</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote><div><br class=""></div><div><div class="">Indeed the intent has been to allow vaGetDisplayDRM() to accept DRM Render-Nodes bypassing authentication to facilitate headless or remote based modes, e.g., ssh remotely with no auth on system display. We really don’t do auth at all. Auth has always been a byproduct of what ever backend we needed to support, or work around, e.g., Android. I’m inclined to be okay with this patch.</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">Sean</div></div><br class=""><blockquote type="cite" class=""><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">On the libva side, it's done once during vaInitialize and only when</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">using the DRM display (vaGetDisplayDRM).</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">-Emil</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; 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