diff options
Diffstat (limited to '0041-x86-pv-shim-correct-ballooning-up-for-compat-guests.patch')
| -rw-r--r-- | 0041-x86-pv-shim-correct-ballooning-up-for-compat-guests.patch | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/0041-x86-pv-shim-correct-ballooning-up-for-compat-guests.patch b/0041-x86-pv-shim-correct-ballooning-up-for-compat-guests.patch deleted file mode 100644 index 5c77bbf..0000000 --- a/0041-x86-pv-shim-correct-ballooning-up-for-compat-guests.patch +++ /dev/null @@ -1,55 +0,0 @@ -From 2f75e3654f00a62bd1f446a7424ccd56750a2e15 Mon Sep 17 00:00:00 2001 -From: Igor Druzhinin <igor.druzhinin@citrix.com> -Date: Mon, 31 Oct 2022 13:28:15 +0100 -Subject: [PATCH 41/87] x86/pv-shim: correct ballooning up for compat guests - -The compat layer for multi-extent memory ops may need to split incoming -requests. Since the guest handles in the interface structures may not be -altered, it does so by leveraging do_memory_op()'s continuation -handling: It hands on non-initial requests with a non-zero start extent, -with the (native) handle suitably adjusted down. As a result -do_memory_op() sees only the first of potentially several requests with -start extent being zero. It's only that case when the function would -issue a call to pv_shim_online_memory(), yet the range then covers only -the first sub-range that results from the split. - -Address that breakage by making a complementary call to -pv_shim_online_memory() in compat layer. - -Fixes: b2245acc60c3 ("xen/pvshim: memory hotplug") -Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com> -Signed-off-by: Jan Beulich <jbeulich@suse.com> -Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> -master commit: a0bfdd201ea12aa5679bb8944d63a4e0d3c23160 -master date: 2022-10-28 15:48:50 +0200 ---- - xen/common/compat/memory.c | 6 +++++- - 1 file changed, 5 insertions(+), 1 deletion(-) - -diff --git a/xen/common/compat/memory.c b/xen/common/compat/memory.c -index c43fa97cf15f..a0e0562a4033 100644 ---- a/xen/common/compat/memory.c -+++ b/xen/common/compat/memory.c -@@ -7,6 +7,7 @@ EMIT_FILE; - #include <xen/event.h> - #include <xen/mem_access.h> - #include <asm/current.h> -+#include <asm/guest.h> - #include <compat/memory.h> - - #define xen_domid_t domid_t -@@ -146,7 +147,10 @@ int compat_memory_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) compat) - nat.rsrv->nr_extents = end_extent; - ++split; - } -- -+ /* Avoid calling pv_shim_online_memory() when in a continuation. */ -+ if ( pv_shim && op != XENMEM_decrease_reservation && !start_extent ) -+ pv_shim_online_memory(cmp.rsrv.nr_extents - nat.rsrv->nr_extents, -+ cmp.rsrv.extent_order); - break; - - case XENMEM_exchange: --- -2.37.4 - |