Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210603' into...

target-arm queue:
 * Some not-yet-enabled preliminaries for M-profile MVE support
 * Consistently use "Cortex-Axx", not "Cortex Axx" in docs, comments
 * docs: Fix installation of man pages with Sphinx 4.x
 * Mark LDS{MIN,MAX} as signed operations
 * Fix missing syndrome value for DAIF and PAC check exceptions
 * Implement BFloat16 extensions
 * Refactoring of hvf accelerator code in preparation for aarch64 support
 * Fix some coverity nits in test code

# gpg: Signature made Thu 03 Jun 2021 16:58:02 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20210603: (45 commits)
  tests/unit/test-vmstate: Assert that dup() and mkstemp() succeed
  tests/qtest/tpm-tests: Remove unnecessary NULL checks
  tests/qtest/pflash-cfi02-test: Avoid potential integer overflow
  tests/qtest/hd-geo-test: Fix checks on mkstemp() return value
  tests/qtest/e1000e-test: Check qemu_recv() succeeded
  tests/qtest/bios-tables-test: Check for dup2() failure
  hvf: Simplify post reset/init/loadvm hooks
  hvf: Introduce hvf vcpu struct
  hvf: Remove hvf-accel-ops.h
  hvf: Make synchronize functions static
  hvf: Use cpu_synchronize_state()
  hvf: Split out common code on vcpu init and destroy
  hvf: Remove use of hv_uvaddr_t and hv_gpaddr_t
  hvf: Make hvf_set_phys_mem() static
  hvf: Move hvf internal definitions into common header
  hvf: Move cpu functions into common directory
  hvf: Move vcpu thread functions into common directory
  hvf: Move assert_hvf_ok() into common directory
  target/arm: Enable BFloat16 extensions
  linux-user/aarch64: Enable hwcap bits for bfloat16
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>