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From 897142f67237f772669d48d024e8e7719f6a5a79 Mon Sep 17 00:00:00 2001
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From: Markus Armbruster <armbru@redhat.com>
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Date: Wed, 18 Sep 2013 09:31:03 +0200
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Subject: [PATCH 19/29] exec: Clean up fall back when -mem-path allocation fails
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RH-Author: Markus Armbruster <armbru@redhat.com>
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Message-id: <1379496669-22778-3-git-send-email-armbru@redhat.com>
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Patchwork-id: 54421
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O-Subject: [PATCH 7.0 qemu-kvm 2/8] exec: Clean up fall back when -mem-path allocation fails
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Bugzilla: 1009328
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Markus Armbruster <armbru@redhat.com>
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With -mem-path, qemu_ram_alloc_from_ptr() first tries to allocate
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accordingly, but when it fails, it falls back to normal allocation.
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The fall back allocation code used to be effectively identical to the
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"-mem-path not given" code, until it started to diverge in commit
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432d268. I believe the code still works, but clean it up anyway: drop
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the special fall back allocation code, and fall back to the ordinary
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"-mem-path not given" code instead.
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Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Acked-by: Laszlo Ersek <lersek@redhat.com>
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Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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Message-id: 1375276272-15988-3-git-send-email-armbru@redhat.com
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Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
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(cherry picked from commit 0628c18267bbe8d44f0faf3e71acf0ae31bea7fd)
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---
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exec.c | 7 ++-----
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1 file changed, 2 insertions(+), 5 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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exec.c | 7 ++-----
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1 files changed, 2 insertions(+), 5 deletions(-)
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diff --git a/exec.c b/exec.c
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index 914d066..ef8d311 100644
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--- a/exec.c
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+++ b/exec.c
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@@ -1063,15 +1063,12 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
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if (mem_path) {
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#if defined (__linux__) && !defined(TARGET_S390X)
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new_block->host = file_ram_alloc(new_block, size, mem_path);
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- if (!new_block->host) {
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- new_block->host = qemu_anon_ram_alloc(size);
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- memory_try_enable_merging(new_block->host, size);
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- }
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#else
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fprintf(stderr, "-mem-path option unsupported\n");
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exit(1);
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#endif
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- } else {
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+ }
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+ if (!new_block->host) {
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if (kvm_enabled()) {
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/* some s390/kvm configurations have special constraints */
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new_block->host = kvm_ram_alloc(size);
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--
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1.7.1
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