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fusee/pm: on 5.0.0+, fix system memory pool increase.

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Previously, we were only setting resource limit,
which didn't modify actual reserved pool size for
the system pool. This adds kernel patches which reduce
the applet pool size, granting the extra memory to
the system partition. The given value has been chosen
specifically to allow normal applet usages. Further
reduction may result in crashes during normal applet usage.
This commit is contained in:
Michael Scire 2019-12-09 17:56:38 -08:00
parent 71fd69eb5a
commit 28717bfd27
2 changed files with 43 additions and 8 deletions
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19
stratosphere/pm/source/impl/pm_resource_manager.cpp
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@ -38,8 +38,9 @@ namespace ams::pm::resource {
constexpr size_t ExtraSystemSessionCount600 = 100;
constexpr size_t ReservedMemorySize600 = 5 * Megabyte;
/* Atmosphere always allocates 24 extra megabytes for system usage. */
constexpr size_t ExtraSystemMemorySizeAtmosphere = 24 * Megabyte;
/* Atmosphere always allocates extra memory for system usage. */
constexpr size_t ExtraSystemMemorySizeAtmosphere = 24 * Megabyte;
constexpr size_t ExtraSystemMemorySizeAtmosphere500 = 33 * Megabyte; /* Applet pool is 0x20100000 */
/* Globals. */
os::Mutex g_resource_limit_lock;
@ -252,12 +253,14 @@ namespace ams::pm::resource {
/* Adjust memory limits for atmosphere. */
/* We take memory away from applet normally, but away from application on < 3.0.0 to avoid a rare hang on boot. */
for (size_t i = 0; i < spl::MemoryArrangement_Count; i++) {
g_memory_resource_limits[i][ResourceLimitGroup_System] += ExtraSystemMemorySizeAtmosphere;
if (hos_version >= hos::Version_300) {
g_memory_resource_limits[i][ResourceLimitGroup_Applet] -= ExtraSystemMemorySizeAtmosphere;
} else {
g_memory_resource_limits[i][ResourceLimitGroup_Application] -= ExtraSystemMemorySizeAtmosphere;
/* NOTE: On Version 5.0.0+, we cannot set the pools so simply. We must instead modify the kernel, which we do */
/* via patches in fusee-secondary. */
if (hos_version < hos::Version_600) {
const size_t extra_memory_size = hos_version == hos::Version_500 ? ExtraSystemMemorySizeAtmosphere500 : ExtraSystemMemorySizeAtmosphere;
const auto src_group = hos_version >= hos::Version_300 ? ResourceLimitGroup_Applet : ResourceLimitGroup_Application;
for (size_t i = 0; i < spl::MemoryArrangement_Count; i++) {
g_memory_resource_limits[i][ResourceLimitGroup_System] += extra_memory_size;
g_memory_resource_limits[i][src_group] -= extra_memory_size;
}
}