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[Minios-devel] [UNIKRAFT PATCH 4/8] plat/xen: Align x86 interrupt stack address at compile time
- To: minios-devel@xxxxxxxxxxxxx
- From: Costin Lupu <costin.lupu@xxxxxxxxx>
- Date: Tue, 23 Apr 2019 13:41:40 +0300
- Cc: felipe.huici@xxxxxxxxx, Florian.Schmidt@xxxxxxxxx, simon.kuenzer@xxxxxxxxx, yuri.volchkov@xxxxxxxxx, sharan.santhanam@xxxxxxxxx
- Delivery-date: Tue, 23 Apr 2019 10:42:03 +0000
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- List-id: Mini-os development list <minios-devel.lists.xenproject.org>
This patch aligns the stack base address at compile time and makes the
irqstack variable public.
Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
plat/xen/x86/arch_events.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/plat/xen/x86/arch_events.c b/plat/xen/x86/arch_events.c
index 1e165c81..7d7289fc 100644
--- a/plat/xen/x86/arch_events.c
+++ b/plat/xen/x86/arch_events.c
@@ -30,9 +30,10 @@
#include <stdint.h>
#include <x86/cpu.h>
#include <uk/plat/config.h>
+#include <uk/essentials.h>
#if defined(__x86_64__)
-static char irqstack[2 * STACK_SIZE];
+char irqstack[STACK_SIZE] __align(STACK_SIZE);
static struct pda {
int irqcount; /* offset 0 (used in x86_64.S) */
@@ -48,8 +49,7 @@ void arch_init_events(void)
wrmsrl(0xc0000101, (uint64_t) &cpu0_pda);
cpu0_pda.irqcount = -1;
cpu0_pda.irqstackptr =
- (void *) (((unsigned long)irqstack + 2 * STACK_SIZE)
- & STACK_MASK_TOP);
+ (void *) ((unsigned long) irqstack + STACK_SIZE);
#endif
}
--
2.11.0
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