selscan asks a descriptor once, with the flags of every set it is in (POLLRDNORM for the read set, POLLWRNORM for the write set, POLLRDBAND for the exception set, plus POLLHUP and POLLERR), and marks each set whose flags the answer shares. A seeded random device's randomdev_poll narrows a request with POLLRDNORM to that bit and returns any other request whole, so in the read set it is readable and in no other set, and otherwise it is in each write and exception set it was asked in; select reported it readable and writable together and never exceptional. A regular file or directory went to the host poll, which on Windows threw; vop_stdpoll makes it readable and writable and never exceptional, which select now answers in process on every host, as poll does.
poll threw for /dev/random and /dev/urandom, which select already treats as ready. FreeBSD 11.4's randomdev_poll, once the device is seeded, narrows a request that has POLLIN or POLLRDNORM to those bits and returns any other request whole, POLLOUT and the band bits included. poll now answers that, and the test that relied on the random device throwing uses a kqueue descriptor, which poll still does not support.
poll threw for any descriptor that is neither a socket nor a pipe, so a title polling a file it also reads stopped there. FreeBSD 11.4 hands a vnode to VOP_POLL, and both vop_stdpoll and vop_nopoll return POLLIN, POLLRDNORM and POLLOUT of the requested events for every event poll accepts and never POLLPRI, POLLRDBAND or POLLWRBAND. A file, a directory or a file read from app0.zar now answers that without a host call. File::IsVnode tells such a descriptor apart from the host file type without throwing, so a host socket lent by libSceNet still reaches its own path.
sysarch's AMD64_GET_FSBASE, AMD64_GET_GSBASE and AMD64_SET_GSBASE now
follow FreeBSD 11's amd64 sysarch on Linux x86-64 through arch_prctl: the
GS base is the calling thread's, a base at or above VM_MAXUSER_ADDRESS
returns EINVAL and a null argument EFAULT. AMD64_SET_FSBASE, whose base
guest and host code share for their TLS, other operations and other hosts
still throw. Wine sets its TEB this way.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The binding plan refused every buffer atomic through a V# whose base is
not a multiple of 4. On RDNA2 such an atomic works when base + offset is
on a DWORD boundary and stops the dispatch otherwise, which the runtime
buffer atomic already does, so the refusal is dropped.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
sceVideodec2Decode threw when it followed sceVideodec2Flush without
sceVideodec2Reset. It now resets FFmpeg's drained decoder and decodes the
unit, keeping the pictures the flush has not returned yet.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The generated rect-list control stage gave every corner of a rectangle the
flat inputs of its first vertex, so last mode was refused for rect lists.
BuildRectListShaders now also builds a control stage that takes them from
the rectangle's third vertex when the pixel shader has a flat input, and a
draw in last mode uses it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Alexej Szpevák