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[PATCH] x86/cmdline: Interpret 'vpmu' as a positive boolean
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 2 Mar 2022 22:11:57 +0000
- Authentication-results: esa1.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Wed, 02 Mar 2022 22:12:13 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
This makes it behave slightly more like a regular boolean option.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Wei Liu <wl@xxxxxxx>
Slightly RFC, because there is no easy way of making the opposite "normal
boolean" case work for no-vpmu.
---
xen/arch/x86/cpu/vpmu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/xen/arch/x86/cpu/vpmu.c b/xen/arch/x86/cpu/vpmu.c
index 4fedc7c57012..501d4f0af94e 100644
--- a/xen/arch/x86/cpu/vpmu.c
+++ b/xen/arch/x86/cpu/vpmu.c
@@ -66,7 +66,9 @@ static int __init cf_check parse_vpmu_params(const char *s)
if ( !ss )
ss = strchr(s, '\0');
- if ( (val = parse_bool(s, ss)) >= 0 )
+ if ( s == ss )
+ opt_vpmu_enabled = true;
+ else if ( (val = parse_bool(s, ss)) >= 0 )
{
opt_vpmu_enabled = val;
if ( !val )
--
2.11.0
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