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tweak double hammer test case #1

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tweak double hammer test case #1

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28bbbe4
- remove volatile to eliminate extra memory references in the hammer …
Mar 10, 2015
1f8b273
- provide a build rule for double hammer
Mar 10, 2015
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4 changes: 2 additions & 2 deletions double_sided_rowhammer.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -195,7 +195,7 @@ uint64_t HammerAddressesStandard(
uint64_t number_of_reads) {
uint64_t* first_pointer = reinterpret_cast<uint64_t*>(first_range.first);
uint64_t* second_pointer = reinterpret_cast<uint64_t*>(second_range.first);
volatile uint64_t sum = 0;
uint64_t sum = 0;

while (number_of_reads-- > 0) {
sum += first_pointer[0];
Expand Down Expand Up @@ -272,7 +272,7 @@ uint64_t HammerAllReachablePages(uint64_t presumed_row_size,
memset(target_page, 0xFF, 0x1000);
}
// Test sleep code to see how this affects the distribution.
sleep(1);
//sleep(1);
// Now hammer the two pages we care about.
std::pair<uint64_t, uint64_t> first_page_range(
reinterpret_cast<uint64_t>(first_row_page),
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1 change: 1 addition & 0 deletions make.sh
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Expand Up @@ -17,3 +17,4 @@
set -eu

g++ -g -Wall -Werror -O2 rowhammer_test.cc -o rowhammer_test
g++ -g --std=c++11 -Wall -O2 double_sided_rowhammer.cc -o double_sided_rowhammer