Module Name: src
Committed By: riastradh
Date: Tue Oct 8 21:09:08 UTC 2024
Modified Files:
src/sys/arch/x86/x86: pmap.c
Log Message:
x86/pmap: Use UVM_KMF_WAITVA to ensure pmap_pdp_alloc never fails.
This is used as the backing page allocator for pmap_pdp_pool, and
pmap_ctor assumes that PR_WAITOK allocations from it don't fail and
unconditionally writes to the resulting kva, which if null leads
nowhere good.
It is unclear to me why uvm_km_alloc can accept any combination of
the options UVM_KMF_NOWAIT and UVM_KMF_WAITVA. It seems to me that
at least one should be required (and they should be exclusive), and
any other use should trip an assertion.
PR kern/58666: panic: lock error: Reader / writer lock:
rw_vector_enter,357: locking against myself
To generate a diff of this commit:
cvs rdiff -u -r1.426 -r1.427 src/sys/arch/x86/x86/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
