lkml.org 
[lkml]   [2022]   [Apr]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH v2 1/5] KVM: mm: add a helper to account page table pages used by KVM.
From
Add a helper to account pages used by KVM for page tables as pagetable
stats. This function will be used by subsequent patches in different
archs.

Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
---
include/linux/kvm_host.h | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 252ee4a61b58..ca46b68e7086 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -2221,6 +2221,15 @@ static inline void kvm_handle_signal_exit(struct kvm_vcpu *vcpu)
}
#endif /* CONFIG_KVM_XFER_TO_GUEST_WORK */

+/*
+ * If nr > 1, we assume virt is the address of the first page of a block of
+ * pages that were allocated together (i.e accounted together).
+ */
+static inline void kvm_account_pgtable_pages(void *virt, int nr)
+{
+ mod_lruvec_page_state(virt_to_page(virt), NR_PAGETABLE, nr);
+}
+
/*
* This defines how many reserved entries we want to keep before we
* kick the vcpu to the userspace to avoid dirty ring full. This
--
2.35.1.1094.g7c7d902a7c-goog
\
 
 \ /
  Last update: 2022-04-05 01:43    [W:0.146 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site