acrn-hypervisor

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Files

Yin Fengwei 4c1cb60684 hv: Remove the up_count_spinlock and use atomic for up_count

It's possible that the up_count_spinlock is not release during
system enter S3. The case is like following:

   BSP                                  AP
 stop_cpus                            cpu_dead
                                         cpu_set_current_state
                                            spinlock_abtain
                                                up_count--

   wait_for up_count == 1
 enter S3

                                            spinlock_release

Especially, considering the real spinlock release could be delayed
by cache.

Actually, the most content protected by up_count_spinlock is per
cpu data and could be changed without lock. Only left is up_count.
This patchset remove the up_count_spinlock and use atomic API
for up_count changing.

Tracked-On: #1691
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>

2018-11-02 10:43:50 +08:00

crypto

HV: wrap and enable hkdf_sha256 key derivation based on mbedtls

2018-08-27 09:39:05 +08:00

atomic.h

hv: Remove the up_count_spinlock and use atomic for up_count

2018-11-02 10:43:50 +08:00

bits.h

HV:add const to bitmap_test parameter addr

2018-10-25 13:45:14 +08:00

errno.h

license: Replace license text with SPDX tag