[kvm-unit-tests PATCH v2 0/4] Zero allocated pages

nadav.amit
2019-05-03T17:54:36Z

For reproducibility, it is best to zero pages before they are used.
There are hidden assumptions on memory being zeroed (by BIOS/KVM), which
might be broken at any given moment. The full argument appears in the
first patch commit log.

Following the first patch that zeros the memory, the rest of the
patch-set removes redundant zeroing do to the additional zeroing.

This patch-set is only tested on x86.

v1->v2:
* Change alloc_pages() as well
* Remove redundant page zeroing [Andrew]

Nadav Amit (4):
lib/alloc_page: Zero allocated pages
x86: Remove redeundant page zeroing
lib: Remove redeundant page zeroing
arm: Remove redeundant page zeroing

lib/alloc_page.c | 4 ++++
lib/arm/asm/pgtable.h | 2 --
lib/arm/mmu.c | 1 -
lib/arm64/asm/pgtable.h | 1 -
lib/virtio-mmio.c | 1 -
lib/x86/intel-iommu.c | 5 -----
x86/eventinj.c | 1 -
x86/hyperv_connections.c | 4 ----
x86/vmx.c | 10 ----------
x86/vmx_tests.c | 11 -----------
10 files changed, 4 insertions(+), 36 deletions(-)

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2.17.1