lkml.org 
[lkml]   [2020]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 09/24] kvm: arm64: Refactor handle_trap to use a switch
Date
Small refactor so that nVHE's handle_trap uses a switch on the Exception
Class value of ESR_EL2 in preparation for adding a handler of SMC32/64.

Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
index 411b0f652417..19332c20fcde 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -16,9 +16,9 @@

DEFINE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);

-static void handle_host_hcall(unsigned long func_id,
- struct kvm_cpu_context *host_ctxt)
+static void handle_host_hcall(struct kvm_cpu_context *host_ctxt)
{
+ unsigned long func_id = host_ctxt->regs.regs[0];
unsigned long ret = 0;

switch (func_id) {
@@ -109,11 +109,12 @@ static void handle_host_hcall(unsigned long func_id,
void handle_trap(struct kvm_cpu_context *host_ctxt)
{
u64 esr = read_sysreg_el2(SYS_ESR);
- unsigned long func_id;

- if (ESR_ELx_EC(esr) != ESR_ELx_EC_HVC64)
+ switch (ESR_ELx_EC(esr)) {
+ case ESR_ELx_EC_HVC64:
+ handle_host_hcall(host_ctxt);
+ break;
+ default:
hyp_panic();
-
- func_id = host_ctxt->regs.regs[0];
- handle_host_hcall(func_id, host_ctxt);
+ }
}
--
2.29.2.222.g5d2a92d10f8-goog
\
 
 \ /
  Last update: 2020-11-09 12:37    [W:0.390 / U:0.472 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site